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Super Volcano Monitoring System

Latest Updates on Supervolcano Activity & Detailed info for:
America: Yellowstone Caldera, Island Park Caldera, Long Valley Caldera, Valles Caldera, La Garita Caldera
Australia & New Zealand:
Lake Taupo, Whakamaru, Reporoa Caldera
Asia:
Lake Toba, Kikai Caldera, Aira Caldera, Mount Tambora, Baekdu Mountain, Mount Aso
Europe: Laacher See, Campi Flegrei, Santorini Volcano
 
Also check:
What's erupting? - List & map of volcanoes erupting at present | RSS
U.S. Volcanoes and Current Activity Alerts
(interactive map)
Current Alerts for U.S. Volcanoes
Worldwide Volcanoes
Russian Volcanoes
California Volcano Observatory
 
Supervolcano http://en.wikipedia.org/wiki/Supervolcano
Volcanic Explosivity Index
(VEI) http://en.wikipedia.org/wiki/Volcanic_Explosivity_Index
How Volcanoes Work http://www.geology.sdsu.edu/how_volcanoes_work/index.html
 
NASA: Supervolcanoes: Not a Threat For 2012 - Throughout Earth's 4.5-billion-year lifetime massive supervolcanoes have erupted. However, despite the claims of those who fear 2012, there's no evidence that such a supereruption is imminent Read more
 
For Volcano Activity Updates click here
 
Volcano Webcams Worldwide - or see bottom of this page
For Known Supervolcano Eruptions in History, also see bottom of this page




America: Yellowstone Caldera, Island Park Caldera, Long Valley Caldera, Valles Caldera, La Garita Caldera
Details of Supervolcano Yellowstone Caldera - State of Wyoming, North-America (Pacific Region)

VEI Index : 8
Name : Yellowstone Caldera
Volcano ID : 1205-01-
Country : USA
Location : State of Wyoming
Diameter : 1,000 kml
Last Eruption : 640,000 years ago
Location at Google Maps

 

 


 
    Click to see on Google maps

Last activity : 06.04.2010 | 20.04.2010 | 30.04.2010 | 11.05.2010 | 24.05.2010 | 01.06.2010 | 26.06.2010 | 05.08.2010 | 17.08.2010 | 17.09.2010 | 24.10.2010 | 26.10.2010 | 27.10.2010 | 07.11.2010 | 19.11.2010 | 20.11.2010 | 28.11.2010 | 29.11.2010 | 01.12.2010 | 21.12.2010 | 24.12.2010 | 28.12.2010 | 01.01.2011 | 26.01.2011 | 27.01.2011 | 04.02.2011 | 05.02.2011 | 08.02.2011 | 11.02.2011 | 12.02.2011 (10+) | 16.02.2011 | 17.02.2011 | 18.02.2011 | 25.02.2011 | 01.03.2011 | 03.03.2011 | 29.03.2011 | 13.04.2011 | 08.05.2011 | 19.05.2011 | 02.06.2011 | 08.07.2011 | 06.09.2011 | 08.09.2011 | 11.09.2011 | 16.09.2011 | 08.11.2011 | 22.11.2011 | 08.12.2011 | 17.01.2012 | 04.02.2012 | 14.03.2012 | 20.03.2012 | 03.04.2012 | 06.04.2012 | 24.04.2012 | 26.04.2012 | 03.05.2012 | 10.05.2012 | 25.05.2012 | 01.06.2012 | 18.06.2012 | 20.06.2012 | 21.06.2012 | 22.06.2012 | 28.06.2012 | 04.07.2012 Daythumbs

Details & Map:http://hisz.rsoe.hu/alertmap/read/index.php?pageid=svolcano_index&svid=4
Source: http://hisz.rsoe.hu/alertmap/index2.php


Daythumbs
Yellowstone Webcams

Newest activity : 04.07.2012
index map
|| big earthquake list || all earthquakes list || Daythumbs
Special maps: Yellowstone National Park || ANSS Intermountain West Region
Recent Earthquakes in the Intermountain West Yellowstone National Park Special Map


Webicorders for Yellowstone (Live)

Click to enlarge >> Locations of the webicorders
Inactive stations are in red; active are blue.
This is the "Plain" style. Other map styles to choose from: Faults1 | Topographic1 | Topographic2
YDC -Denny Creek
YFT -Old Faithful
YHB -Horse Butte
YHH -Holmes Hill
YLA -Lake Butte
YLT -Little West Thumb
YMC -Maple Creek
YML -Mary Lake
YMP -Mirror Lake Plateau
YMR -Madison River
YMS -Mt Sheridan
YMV -Mammoth Vault
YNR -Norris Junction
YPC -Pelican Cone
YPK -Parker Peak

YPP -Pitchstone Plateau
YSB -Soda Butte
YTP -The Promontory
YUF -Upper Falls
MCID -Moose Creek
LKWY -Lake

Yellowstone Volcano Observatory Webcams (Live)
The camera looks west toward Biscuit Basin, at the north end of the Upper Geyser Basin. In the image, the Firehole River flows north (to the right). Behind it, a boardwalk passes Wall Pool, Sapphire Pool and other thermal features. In the background, the tree-covered ridge is composed of the ~114,000-year-old West Yellowstone rhyolite flow. This area hosted a variety of rock- hurling hydrothermal (steam) eruptions during the 1930s and in the wake of the 1959 Hebgen Lake earthquake. In recent years, similar smaller blasts have been known to occur. | Link

Known Webcam Problems
Disclaimer: This view is a single image from a research camera. The camera is subject to sporadic breakdown, and may not be repaired immediately. At times, weather will obscure visibility. The internal temperature listed on the image is measured inside the camera box and can be several degrees warmer than the external environment.

Yellowstone National Park, View of Old Faithful Geyser as seen through the front of the visitor education center.

 

 

This camera at Mt. Washburn is pointed in a northeasterly direction and shows views of both the Absaroka and Beartooth Mountain Ranges.

 

 

 
This camera shows a view of a ridgeline on Mt. Washburn in the foreground, and the Grand Tetons, and portions of the Grand Canyon of the Yellowstone, and Yellowstone Lake in the upper right hand corner and background. The camera is pointed in a southerly direction and may be moved throughout the season to view significant fire activity.


Terraces at Mammoth Hot Springs as seen from the second floor of the Albright Visitor Center.

 

 



     
Yellowstone Watch Webcams:
- New Yellowstone Webcams (all)
- Yellowstone North WebCam#2

Known Webcam Problems
* Launch Old Faithful Geyser Live!-Video WebCam - See Webcam Updates for camera status
- View both Old Faithful Area webcams side by side -- includes countdown timer, and weather information
- Visit the Geyser Observation and Study Association (a non-governmental site) for a recent summary of geyser activity in the Old Faithful area.





About Yellowstone Caldera

The Yellowstone Caldera is the volcanic caldera in Yellowstone National Park in the United States. The caldera is located in the northwest corner of Wyoming, in which the vast majority of the park is contained. The major features of the caldera measure about 55 kilometers (34 mi) by 72 kilometers (45 mi) as determined by geological field work conducted by Bob Christiansen of the United States Geological Survey in the 1960s and 1970s. After a BBC television science program coined the term supervolcano in 2000, it has often been referred to as the Yellowstone Supervolcano. Yellowstone, like Hawaii, is believed to lie on top of an area called a hotspot where light, hot, molten mantle rock rises towards the surface. While the Yellowstone hotspot is now under the Yellowstone Plateau, it previously helped create the eastern Snake River Plain (to the west of Yellowstone) through a series of huge volcanic eruptions. Although the hotspot's apparent motion is to the east-northeast, the North American Plate is really moving west-southwest over the stationary hotspot deep underneath.

Over the past 17 million years or so, this hotspot has generated a succession of violent eruptions and less violent floods of basaltic lava. Together these eruptions have helped create the eastern part of the Snake River Plain from a once-mountainous region. At least a dozen or so of these eruptions were so massive that they are classified as supereruptions. Volcanic eruptions sometimes empty their stores of magma so swiftly that they cause the overlying land to collapse into the emptied magma chamber, forming a geographic depression called a caldera. Calderas formed from explosive supereruptions can be as wide and deep as mid- to large-sized lakes and can be responsible for destroying broad swaths of mountain ranges.

The oldest identified caldera remnant straddles the border near McDermitt, Nevada-Oregon. Progressively younger caldera remnants, most grouped in several overlapping volcanic fields, extend from the Nevada-Oregon border through the eastern Snake River Plain and terminate in the Yellowstone Plateau. One such caldera, the Bruneau-Jarbidge caldera in southern Idaho, was formed between 10 and 12 million years ago, and the event dropped ash to the depth of a foot 1,000 miles (1,600 km) away in northeastern Nebraska and killed a large herd of rhinoceroses, camels, and other animals at Ashfall Fossil Beds State Historical Park. Within the past 17 million years, 142 or more caldera-forming eruptions have occurred from the Yellowstone hotspot . The loosely defined term 'supervolcano' has been used to describe volcanic fields that produce exceptionally large volcanic eruptions. Thus defined, the Yellowstone Supervolcano is the volcanic field which produced the latest three supereruptions from the Yellowstone hotspot. The three super eruptions occurred 2.1 million, 1.3 million, and 640,000 years ago; forming the Island Park Caldera, the Henry's Fork Caldera, and Yellowstone calderas, respectively. The Island Park Caldera supereruption (2.1 million years ago), which produced the Huckleberry Ridge Tuff, was the largest and produced 2,500 times as much ash as the 1980 Mount St. Helens eruption. The next biggest supereruption formed the Yellowstone Caldera (630,000 years ago) and produced the Lava Creek Tuff. The Henry's Fork Caldera (1.2 million years ago) produced the smaller Mesa Falls Tuff but is the only caldera from the SRP-Y hotspot that is plainly visible today.

Non-explosive eruptions of lava and less-violent explosive eruptions have occurred in and near the Yellowstone caldera since the last supereruption. The most recent lava flow occurred about 70,000 years ago, while the largest violent eruption excavated the West Thumb of Lake Yellowstone around 150,000 years ago. Smaller steam explosions occur as well; an explosion 13,800 years ago left a 5 kilometer diameter crater at Mary Bay on the edge of Yellowstone Lake (located in the center of the caldera). Currently, volcanic activity is exhibited via numerous geothermal vents scattered throughout the region, including the famous Old Faithful Geyser, plus recorded ground swelling indicating ongoing inflation of the underlying magma chamber.

The volcanic eruptions, as well as the continuing geothermal activity, are a result of a great cove of magma located below the caldera's surface. The magma in this cove contains gases that are kept dissolved only by the immense pressure that the magma is under. If the pressure is released to a sufficient degree by some geological shift, then some of the gases bubble out and cause the magma to expand. This can cause a runaway reaction. If the expansion results in further relief of pressure, for example, by blowing crust material off the top of the chamber, the result is a very big gas explosion.

Learn more about Super Volcanoes: Interactive - Hotspot Yellowstone http://dsc.discovery.com/convergence/supervolcano/supervolcano.html

Yellowstone Monitor: http://www.isthisthingon.org/Yellowstone/daythumbs.php reference this page to see the stations on a park map background

Monitoring Earthquakes in Yellowstone National Park http://volcanoes.usgs.gov/yvo/activity/monitoring/earthquakes.php
Earthquake List for Map Yellowstone http://earthquake.usgs.gov/earthquakes/recenteqsus/Maps/special/Yellowstone_eqs.php
Recent Earthquakes in the Intermountain West http://www.seis.utah.edu/req2webdir/recenteqs/Maps/Yellowstone.html


Recent quakes in Yellowstone: http://earthquake.usgs.gov/eqcenter/recenteqsus/Maps/US2/43.45.-111.-109_eqs.php

Yellowstone Watch Webcams:
New Yellowstone Webcams (all) http://www.nps.gov/yell/photosmultimedia/webcams.htm
Mammoth Cam http://www.nps.gov/yell/mammothcam.htm
Old Faithful http://www.nps.gov/yell/oldfaithfulcam.htm
Watch the Geysers http://www.geyserstudy.org/geyser_main.htm
Yellowstone North WebCam#2 http://www.yellowstone-natl-park.com/northcam.htm

The Yellowstone Seismic Network (YSN) is operated cooperatively by University of Utah, the US Geological Survey's Volcano Hazards Program, and the National Park Service. The network covers the seismically and volcanically active Yellowstone National Park and surrounding area. It is designed for the purpose of monitoring volcano and geyser-related earthquake activity and for studying the subsurface processes of Yellowstone.

Monitoring Earthquakes in Yellowstone National Park
Earthquake Data (from the University of Utah)
Details of Supervolcano Island Park Caldera - State of Idaho, North-America (Pacific Region)

VEI Index : 8
Name : Island Park Caldera
Volcano ID : 1205-01-
Country : USA
Location : State of Idaho
Diameter : 2,500 kml
Last Eruption : 2.1 million years ago
Location at Google Maps

 

 


 
    Click to see on Google maps

Last activity : 20.04.2010 | 30.04.2010 | 11.05.2010 | 24.05.2010 | 01.06.2010 | 26.06.2010 | 05.08.2010 | 17.08.2010 | 07.09.2010 | 26.10.2010 | 27.10.2010 | 07.11.2010 | 19.11.2010 | 20.11.2010 | 28.11.2010 | 01.12.2010 | 15.12.2010 | 21.12.2010 | 24.12.2010 | 26.12.2010 | 01.01.2011 | 26.01.2011 | 27.01.2011 | 04.02.2011 | 05.02.2011 | 08.02.2011 | 12.02.2011 | 16.02.2011 | 17.02.2011 | 18.02.2011 | 25.02.2011 | 01.03.2011 | 03.03.2011 | 16.03.2011 | 05.04.2011 (2) | 08.05.2011 | 19.05.2011 | 02.06.2011 | 12.06.2011 | 08.07.2011 | 08.09.2011 | 11.09.2011 | 31.10.2011 | 08.11.2011 | 22.11.2011 | 17.01.2012 | 04.02.2012 | 07.03.2012 | 14.03.2012 | 03.04.2012 | 06.04.2012 | 27.04.2012 | 02.05.2012 | 03.05.2012 | 10.05.2012 | 25.05.2012 | 01.06.2012 | 20.06.2012 | 21.06.2012 | 22.06.2012 | 28.06.2012 | 04.07.2012 |

Newest activity : 04.07.2012

Details & Map: http://hisz.rsoe.hu/alertmap/read/index.php?pageid=svolcano_index&svid=5
Source: http://hisz.rsoe.hu/alertmap/index2.php

About Island Park Caldera
The volcanic feature commonly called the Island Park Caldera in the state of Idaho, USA, is actually two calderas, one nested inside the other. The Island Park Caldera is the older and much larger caldera, with approximate dimensions of 58 miles (93 km) by 40 miles (64 km). Its ashfall is the source of the Huckleberry Ridge Tuff that is found from southern California to the Mississippi River near St. Louis. This supereruption (2500 cubic kilometers) occurred 2.1 million years BP and produced 2,500 times as much ash as the 1980 Mount St. Helens eruption. The caldera clearly visible today is the later Henry's Fork Caldera that is the source of the Mesa Falls Tuff. It was formed in an eruption of more than 280 cubic kilometers 1.3 million years BP. The two nested calderas share the same rim on their western sides, but the older Island Park Caldera is much larger and more oval and extends well into Yellowstone Park. The Island Park Caldera is sometimes referred to as the First Phase Yellowstone Caldera or the Huckleberry Ridge Caldera. To the southwest of the caldera lies the Snake River Plain, which was formed by a succession of older calderas marking the path of the Yellowstone hotspot. The Plain is a depression, sinking under the weight of the volcanic rocks that formed it, through which the Snake River winds. Other observable volcanic features in the Plain include: the Menan Buttes, the Big Southern Butte, Craters of the Moon, the Wapi Lava Field and Hell's Half Acre. These calderas are in an area called Island Park that is known for beautiful forests, large springs, clear streams, waterfalls, lakes, ponds, marshes, wildlife, and fishing. Harriman State Park is located in the caldera. Snowmobiling, fishing, and Nordic skiing, and wildlife viewing are popular activities in the area. The peaks of the Grand Tetons to the southeast are visible from places in the caldera.

Details of Supervolcano Long Valley Caldera - State of California, North-America (Pacific Region)

VEI Index : VEI 7
Name : Long Valley Caldera
Volcano ID : 120314-A
Country : North-America, USA, State of California
Diameter : 600 kml
Last eruption : ~760,000 years ago
Location at Google maps

 

 

 

 

 
    Click to see on Goole maps

Last activity : 02.04.2010 | 03.04.2010 | 09.04.2010 | 23.04.2010 | 25.04.2010 | 03.05.2010 | 17.05.2010 | 18.05.2010 | 21.05.2010 | 22.05.2010 | 23.05.2010 | 24.05.2010 | 25.05.2010 | 26.06.2010 | 02.06.2010 | 07.06.2010 | 11.06.2010 | 13.06.2010 | 16.06.2010 | 23.06.2010 | 25.06.2010 | 27.06.2010 | 29.06.2010 | 30.06.2010 | 07.07.2010 | 12.07.2010 | 14.07.2010 | 18.07.2010 | 19.07.2010 | 20.07.2010 | 21.07.2010 | 22.07.2010 | 24.07.2010 | 28.07.2010 | 29.07.2010 | 30.07.2010 | 06.08.2010 | 08.08.2010 | 10.08.2010 | 12.08.2010 | 16.08.2010 | 17.08.2010 | 21.08.2010 | 22.08.2010 | 30.08.2010 | 05.09.2010 | 11.09.2010 | 17.09.2010 | 26.09.2010 | 27.09.2010 | 04.10.2010 | 09.10.2010 | 10.10.2010 | 18.10.2010 | 21.10.2010 | 30.10.2010 | 01.11.2010 | 09.11.2010 | 14.11.2010 | 16.11.2010 | 22.11.2010 | 24.11.2010 | 09.12.2010 | 12.12.2010 | 13.12.2010 | 17.12.2010 | 18.12.2010 | 19.12.2010 | 23.12.2010 | 26.12.2010 | 04.01.2011 | 05.01.2011 | 07.01.2011 | 09.01.2011 | 10.01.2011 | 22.01.2011 | 23.01.2011 | 26.01.2011 | 03.02.2011 | 06.02.2011 | 08.02.2011 | 09.02.2011 | 10.02.2011 | 20.02.2011 | 23.02.2011 | 26.02.2011 | 03.03.2011 | 07.03.2011 | 09.03.2011 | 15.03.2011 | 19.03.2011 | 20.03.2011 | 24.03.2011 | 25.03.2011 | 28.03.2011 | 29.03.2011 | 30.03.2011 | 31.03.2011 | 01.04.2011 | 04.04.2011 | 06.04.2011 | 07.04.2011 | 11.04.2011 | 13.04.2011 | 14.04.2011 | 15.04.2011 | 16.04.2011 | 17,04,2011 | 18.04.2011 | 19.04.2011 | 20.04.2011 | 21.04.2011 | 22.04.2011 | 23.04.2011 | 24.04.2011 | 25.04.2011 | 26.04.2011 | 27.04.2011 | 28.04.2011 | 29.04.2011 | 02.05.2011 | 03.05.2011 | 04.05.2011 | 08.05.2011 | 09.05.2011 | 10.05.2011 | 11.05.2011 | 12.05.2011 | 13.05.2011 | 14.05.2011 | 15.05.2011 | 17.05.2011 | 18.05.2011 | 19.05.2011 | 20.05.2011 | 22.05.2011 | 24.05.2011 | 27.05.2011 | 28.05.2011 | 29.05.2011 | 30.01.2011 | 01.06.2011 | 05.06.2011 | 11.06.2011 | 18.06.2011 | 19.06.2011 | 27.06.2011 | 28.06.2011 | 29.06.2011 | 30.06.2011 | 02.07.2011 | 03.07.2011 | 04.07.2011 | 05.07.2011 | 06.07.2011 | 07.07.2011 | 08.07.2011 | 09.07.2011 | 11.07.2011 | 13.07.2011 | 15.07.2011 | 16.07.2011 | 18.07.2011 | 20.07.2011 | 22.07.2011 | 23.07.2011 | 27.07.2011 | 29.07.2011 | 01.08.2011 | 06.08.2011 | 09.08.2011 | 12.08.2011 | 14.08.2011 | 17.08.2011 | 18.08.2011 | 22.08.2011 | 24.08.2011 | 25.08.2011 | 26.08.2011 | 27.08.2011 | 29.08.2011 | 31.08.2011 | 02.09.2011 | 03.09.2011 | 05.09.2011 | 07.09.2011 | 10.09.2011 | 13.09.2011 | 14.09.2011 | 17.09.2011 | 22.09.2011 | 27.09.2011 | 30.09.2011 | 03.10.2011 | 06.10.2011 | 08.10.2011 | 15.10.2011 | 16.10.2011 | 18.11.2011 | 19.10.2011 | 20.10.2011 | 21.10.2011 | 23.11.2011 | 24.11.2011 | 25.10.2011 | 30.10.2011 | 31.10.2011 | 01.11.2011 | 02.11.2011 | 03.11.2011 | 07.11.2011 | 09.11.2011 | 11.11.2011 | 12.11.2011 | 13.11.2011 | 14.11.2011 | 15.11.2011 | 21.11.2011 | 22.11.2011 | 23.11.2011 | 25.04.2011 | 27.11.2011 | 30.11.2011 | 01.12.2011 | 04.12.2011 | 05.12.2011 | 07.12.2011 | 15.12.2011 | 17.12.2011 | 18.12.2011 | 20.12.2011 | 21.12.2011 | 23.12.2011 | 24.12.2011 | 29.12.2011 | 30.12.2011 | 01.01.2012 | 05.01.2012 | 13.01.2012 | 18.01.2012 | 20.01.2012 | 21.01.2012 | 22.01.2012 | 25.01.2012 | 28.01.2012 | 01.02.2012 | 07.02.2012 | 10.02.2012 | 12.02.2012 | 13.02.2012 | 14.02.2012 | 15.02.2012 | 22.02.2012 | 25.02.2012 | 03.03.2012 | 05.03.2012 | 07.03.2012 | 08.03.2012 | 10.03.2012 | 11.03.2012 | 13.03.2012 | 15.03.2012 | 16.03.2012 | 17.02.2012 | 18.02.2012 | 19.02.2012 | 20.03.2012 | 21.03.2012 | 23.03.2012 | 24.03.2012 | 25.03.2012 | 26.03.2012 | 27.03.2012 | 28.03.2012 | 29.03.2012 | 31.03.2012 | 01.04.2012 | 03.04.2012 | 04.04.2012 | 05.04.2012 | 06.04.2012 | 08.04.2012 | 09.04.2012 | 10.04.2012 | 11.04.2012 | 12.04.2012 | 13.04.2012 | 15.04.2012 | 17.04.2012 | 18.04.2012 | 19.04.2012 | 20.04.2012 | 21.04.2012 | 22.04.2012 | 23.04.2012 | 24.04.2012 | 25.04.2012 | 26.04.2012 | 27.04.2012 | 28.04.2012 | 29.04.2012 | 30.04.2012 | 02.05.2012 | 03.05.2012 | 04.05.2012 | 05.05.2012 | 06.05.2012 | 07.05.2012 | 08.05.2012 | 10.05.2012 | 11.05.2012 | 12.05.2012 | 13.05.2012 | 15.05.2012 | 16.05.2012 | 18.05.2012 | 19.05.2012 | 21.05.2012 | 23.05.2012 | 24.05.2012 | 25.05.2012 | 26.05.2012 | 27.05.2012 | 29.05.2012 | 30.05.2012 | 31.05.2012 | 01.06.2012 | 02.06.2012 | 03.06.2012 | 04.06.2012 | 05.06.2012 | 06.06.2012 | 07.06.2012 | 08.06.2012 | 09.06.2012 | 11.06.2012 | 12.06.2012 | 13.06.2012 | 15.06.2012 | 16.06.2012 | 17.06.2012 | 18.06.2012 | 19.06.2012 | 20.06.2012 | 21.06.2012 | 22.06.2012 | 23.06.2012 | 24.06.2012 | 25.06.2012 | 26.06.2012 | 27.06.2012 | 28.06.2012 | 29.06.2012 | 02.07.2012 | 04.07.2012 | 05.07.2012 | 06.07.2012 | 07.07.2012 |

Newest activity : 07.07.2012 Monitoring
Monitoring Data | Most Recent Updates | Maps | Weekly Update | Archive
California-Nevada Fault Maps | Monthly Status Report Long Valley Caldera, California
California Volcano Observatory | Long Valley Caldera | Monitoring \ Monitoring info

Earthquake Monitoring at Long Valley Caldera between Jan 1 1983 till recent
Number of earthquakes from the past 30 days


Details & Map: http://hisz.rsoe.hu/alertmap/read/index.php?pageid=svolcano_index&svid=15
Source: http://hisz.rsoe.hu/alertmap/index2.php

About Long Valley Caldera
Long Valley Caldera is a depression in eastern California that is adjacent to Mammoth Mountain. The valley is one of the largest calderas on earth, measuring about 20 miles (32 km) long (east-west) and 11 miles (18 km) wide (north-south). The elevation of the floor of the caldera is 6,500 feet (2,000 m) in the east and 8,500 feet (2,600 m) in the west. The elevation of the caldera walls reach 9,800-11,500 feet (3,000-3,500 m) except in the east where the wall rises only 500 feet (150 m) to an elevation of 7,550 feet (2,300 m). Long Valley was formed 760,000 years ago when a huge volcanic eruption released very hot ash that later cooled to form the Bishop tuff that is common to the area. The eruption was so colossal that the magma chamber under the now destroyed volcano was significantly emptied to the point of collapse. The collapse itself caused an even larger secondary eruption of pyroclastic ash that burned and buried thousands of square miles. Ash from this eruption blanketed much of the western part of what is now the United States. Geologists call topographic depressions formed in this manner calderas.

Subsequent eruptions from the Long Valley magma chamber were confined within the caldera with extrusions of relatively hot (crystal-free) rhyolite 700,000 to 600,000 years ago as the caldera floor was upwarped to form the resurgent dome followed by extrusions of cooler, crystal-rich moat rhyolite at 200,000-year intervals (500,000, 300,000, and 100,000 years ago) in clockwise succession around the resurgent dome. At its height 600,000 years ago, an Owens River-fed 300 foot (91 m) deep lake filled the caldera and rose to an elevation of 7,800 feet (2,400 m) above sea level. The lake was drained sometime in the last 100,000 years after it overtopped the southern rim of the caldera, eroded the sill and created the Owens River Gorge. A dam in the gorge has partially restored part of that lake which is now known as Lake Crowley. Since the great eruption many hot springs developed in the area and the resurgent dome has uplifted. During the last ice age, glaciers filled the canyons leading to Long Valley, but the valley floor was clear of ice. Excellent examples of terminal moraines can be seen at Long Valley: these moraines are the debris left from glacial sculpting. Laurel Creek, Convict Creek, and McGee Creek all have prominent moraines.

In May of 1980, a strong earthquake swarm that included four Richter magnitude 6 earthquakes struck the southern margin of Long Valley Caldera associated with a 10 inch (25-cm), dome-shaped uplift of the caldera floor. These events marked the onset of the latest period of caldera unrest that continues to this day. This ongoing unrest includes recurring earthquake swarms and continued dome-shaped uplift of the central section of the caldera (the resurgent dome) accompanied by changes in thermal springs and gas emissions.[1] After the quake another road was created as an escape route. Its name at first was proposed as the "Mammoth Escape Route" but was changed to the Mammoth Scenic Loop after Mammoth area businesses and land owners complained. In 1982, the United States Geological Survey under the Volcano Hazards Program began an intensive effort to monitor and study geologic unrest in Long Valley Caldera. The goal of this effort is to provide residents and civil authorities in the area reliable information on the nature of the potential hazards posed by this unrest and timely warning of an impending volcanic eruption, should it develop.[1] Most, perhaps all, volcanic eruptions are preceded and accompanied by geophysical and geochemical changes in the volcanic system. Common precursory indicators of volcanic activity include increased seismicity, ground deformation, and variations in the nature and rate of gas emissions.

Monitoring Data | Most Recent Updates | Maps

Monitoring Volcanic Unrest at Long Valley Caldera , California http://volcanoes.usgs.gov/lvo/

WOVO.org | Long Valley Caldera Observatory http://www.wovo.org/1203_14.html


Details of Supervolcano Valles Caldera - Jemez Mountains, State of New Mexico, North-America (Pacific Region)

VEI Index : 7
Name : Valles Caldera
Volcano ID : 121002-D
Country : USA
Location : Jemez Mountains, State of New Mexico
Diameter : ~600 kml
Last Eruption : ~1.12 million years ago
Location at Google maps

 

 

 

 
    Click to see on Google maps

Last activity : 14.12.2010 | 17.12.2010 | 18.12.2010 | 05.05.2011 |

Newest activity : 05.05.2011

Details & Map: http://hisz.rsoe.hu/alertmap/read/index.php?pageid=svolcano_index&svid=16
Source: http://hisz.rsoe.hu/alertmap/index2.php

About Valles Caldera
Valles Caldera (or Jemez Caldera), is a 12-mile-wide collapsed volcanic caldera in the Jemez Mountains of northern New Mexico. Within its caldera, Valle Grande is the largest valle (grass valley) and the only one with a paved road. Valles Caldera is one of the smaller volcanoes in the supervolcano class. The circular topographic rim of the caldera measures 19 kilometers (12 miles) in diameter. The caldera and surrounding volcanic structures are the most thoroughly studied caldera complex in the United States. Research studies have concerned the fundamental processes of magmatism, hydrothermal systems, and ore deposition. Nearly 40 deep cores have been examined, resulting in extensive subsurface data.

The Valles Caldera is the younger of two calderas known at this location, having collapsed over and buried the Toledo Caldera, which in turn may have collapsed over yet older calderas. The associated Cerros del Rio volcanic field, which forms the eastern Pajarito Plateau and the Caja del Rio, is older than the Toledo Caldera. These two large calderas formed during eruptions 1.47 million and 1.15 million years ago.[6] The Caldera and surrounding area continue to be shaped by ongoing volcanic activity. The El Cajete Pumice, Battleship Rock Ignimbrite, Banco Bonito Rhyolite, and the VC-1 Rhyolite were emplaced during the youngest eruption of Valles caldera, about 50,000â??60,000 years ago. Seismic investigations show that a low-velocity zone lies beneath the caldera, and an active geothermal system with hot springs and fumaroles exists today.

The volcanic properties of the Valles Caldera make it a likely source for renewable and nonpolluting geothermal energy. However, some people oppose development of the geothermal energy, considering it destructive to scenic beauty and recreational and grazing use. The lower Bandelier tuff which can be seen along canyon walls west of the Valles Caldera, including San Diego Canyon, is related to the eruption and collapse of the Toledo Caldera. The upper Bandelier tuff is believed to have been deposited during eruption and collapse of the Valles Caldera. The now eroded and exposed orange-tan, light-colored Bandelier tuff from these events creates the stunning mesas of the Pajarito Plateau. These calderas and associated volcanic structures lie within the Jemez Volcanic Field. This volcanic field lies above the intersection of the Rio Grande Rift, which runs north-south through New Mexico, and the Jemez Lineament, which extends from southeastern Arizona northeast to western Oklahoma. The volcanic activity here is related to the tectonic movements of this intersection.


Details of Supervolcano La Garita Caldera - State of Colorado, North-America (Pacific Region)

VEI Index : 8
Name :  La Garita Caldera
Volcano ID :  000
Country :  USA
Location :  State of Colorado
Diameter :  ~5,000 kml
Last Eruption :  ~27.8 million years ago
Last activity : -
Location at Google maps

 

 

 
    Click to see on Google maps

Latest Activity: -

Newest activity : No data

Details & Map: http://hisz.rsoe.hu/alertmap/read/index.php?pageid=svolcano_index&svid=6
Source: http://hisz.rsoe.hu/alertmap/index2.php

About La Garita Caldera
La Garita Caldera is a large volcanic caldera located in the San Juan volcanic field in the San Juan Mountains in southwestern Colorado, United States, to the west of the town of La Garita, Colorado. The eruption that created the La Garita Caldera was, perhaps, the largest known explosive eruption in all of Earth's history (the Siberian Traps may have been larger but the cause is still being debated). The La Garita Caldera is one of a number of calderas that formed during a massive ignimbrite flare-up in Colorado, Utah and Nevada from 40â??25 million years ago, and was the site of truly enormous eruptions about 28â??26 million years ago, during the Oligocene Epoch. The area devastated by the La Garita eruption is thought to have covered a significant portion of what is now Colorado, and ash could have fallen as far as the east coast of North America and the Caribbean. The scale of La Garita volcanism was far beyond anything known in human history. The resulting deposit, known as the Fish Canyon Tuff, has a volume of approximately 1,200 cubic miles (5,000 km3), enough material to fill Lake Michigan (in comparison, the May 18, 1980 eruption of Mt. St. Helens was only 0.25 cubic miles (1.0 km3) in volume). By contrast, the most powerful human-made explosive device ever detonated, the Tsar Bomba or Emperor Bomb, had a yield of 50 megatons, whereas the eruption at La Garita was approximately 105 times more powerful. It is possibly the most energetic event on Earth since the Chicxulub impact, which was 50 times more powerful.

Australia & New Zealand: Lake Taupo, Whakamaru, Reporoa Caldera
Details of Supervolcano Lake Taupo - North Island, New Zealand

VEI Index : 8
Name : Lake Taupo
Volcano ID : 0401-07=
Country : NZL, Australia & New-Zealand, New Zealand
Location : North Island
Diameter : ~616 kml
Last Eruption : ~26,500 years ago
Location at Google maps

 





 
    Click to see on Google maps

Last activity : 07.04.2010 | 29.06.2010 mag 5.0 | 03.07.2010 | 27.07.2010 | 29.07.2010 | 30.07.2010 | 31.07.2010 | 06.08.2010 | 16.08.2010 | 24.08.2010 | 27.08.2010 | 28.08.2010 | 29.08.2010 | 03.09.2010 | 14.09.2010 | 24.09.2010 | 02.10.2010 | 09.10.2010 | 15.10.2010 | 20.10.2010 | 25.10.2010 | 31.10.2010 | 03.11.2010 | 11.11.2010 | 15.11.2010 | 09.12.2010 | 10.12.2010 | 06.01.2011 | 17.01.2011 | 18.01.2011 | 22.01.2011 | 27.01.2011 (4) | 09.02.2011 | 10.02.2011 | 17.02.2011 (3) | 08.03.2011 | 12.03.2011 | 19.03.2011 | 26.03.2011 | 30.03.2011 | 16.04.2011 | 17.04.2011 | 26.04.2011 | 06.05.2011 | 16.05.2011 | 21.05.2011 | 06.06.2011 | 09.06.2011 | 12.06.2011 | 27.06.2011 | 05.07.2011 | 23.07.2011 | 06.08.2011 | 09.08.2011 | 28.08.2011 | 29.08.2011 | 02.09.2011 | 08.09.2011 | 21.06.2012 | 07.07.2012 |

Newest activity : 07.07.2012

- Recent New Zealand Quakes
- Overview of current New Zealand volcanic activity
- Taupo

The current status of the Taupo Volcanic Centre.    
Last 3 month's earthquakes  

Taupo volcano first began to erupt over 300,000 years ago. It is very large and has many vents, most of which are now under Lake Taupo. Taupo is not a large mountain because the eruptions have been so explosive that all material has been deposited far from the vent and subsequent collapse of the ground has formed a caldera (a collapsed volcano).

Last 3 month's earthquakes    

Webcam
Details & Map: http://hisz.rsoe.hu/alertmap/read/index.php?pageid=svolcano_index&svid=1
Source: http://hisz.rsoe.hu/alertmap/index2.php

About Lake Taupo
Lake Taupo is a lake situated in the North Island of New Zealand. With a surface area of 616 square kilometres (238 sq mi), it is the largest lake by surface area in New Zealand, and the largest freshwater lake by surface area in Oceania. Lake Taupo has a perimeter of approximately 193 kilometres, a deepest point of 186 metres. It is drained by the Waikato River (New Zealand's longest river), while its main tributaries are the Waitahanui River, the Tongariro River, and the Tauranga-Taupo River. It is a noted trout fishery with stocks of introduced brown trout and rainbow trout. The lake lies in a caldera created following a huge volcanic eruption (see supervolcano) approximately 26,500 years ago. According to geological records, the volcano has erupted 28 times in the last 27,000 years. It has predominantly erupted rhyolitic lava although Mount Tauhara formed from dacitic lava.

The largest eruption, known as the Oruanui eruption, ejected an estimated 1,170 cubic kilometres of material and caused several hundred square kilometres of surrounding land to collapse and form the caldera. The caldera later filled with water, eventually overflowing to cause a huge outwash flood. Several later eruptions occurred over the millennia before the most recent major eruption, which occurred in 180 CE. Known as the Hatepe eruption, it is believed to have ejected 100 cubic kilometres of material, of which 30 cubic kilometres was ejected in the space of a few minutes. This was one of the most violent eruptions in the last 5,000 years (alongside the Tianchi eruption of Baekdu at around 1000 and the 1815 eruption of Tambora), with a Volcanic Explosivity Index rating of 7. The eruption column was twice as high as the eruption column from Mount St. Helens in 1980, and the ash turned the sky red over Rome and China. The eruption devastated much of the North Island and further expanded the lake. The area was uninhabited by humans at the time of the eruption, since New Zealand was not settled by the Maori until several centuries later at the earliest. Taupo's last known eruption occurred around 210 CE, with lava dome extrusion forming the Horomatangi Reefs, but that eruption was much smaller than the 11z0 CE eruption. The 180 eruption was one of the largest in recorded history. The skies and sunsets formed from this eruption were noted by Roman and Chinese observers. Any possible climatic effects of the eruption would have been concentrated on the southern hemisphere due to the southerly position of Lake Taupo. Underwater hydrothermal activity continues near the Horomatangi vent, and the volcano is currently considered to be dormant rather than extinct.

Details of Supervolcano Whakamaru - North Island, New Zealand

VEI Index : 8
Name : Whakamaru
Volcano ID : 0401-061
Country : NZL, Australia & New-Zealand, New Zealand
Location : North Island
Diameter : 1,200-2,000 kml
Last Eruption : ~254,000 years ago
   
     

Last activity : 07.04.2010 | 29.06.2010 mag 5.0 | 03.07.2010 | 14.07.2010 | 27.07.2010 | 29.07.2010 | 30.07.2010 | 31.07.2010 | 06.08.2010 | 16.08.2010 | 24.08.2010 | 27.08.2010 | 03.09.2010 | 14.09.2010 | 24.09.2010 | 02.10.2010 | 07.10.2010 | 09.10.2010 | 15.10.2010 | 15.10.2010 | 20.10.2010 | 25.10.2010 | 15.11.2010 | 09.12.2010 | 10.12.2010 | 06.01.2011 | 17.01.2011 | 18.01.2011 | 27.01.2011 | 30.01.2011 | 19.03.2011 | 30.03.2011 | 16.04.2011 | 17.04.2011 | 26.04.2011 | 06.05.2011 | 16.05.2011 | 21.05.2011 | 06.06.2011 | 09.06.2011 | 16.06.2011 | 27.06.2011 | 05.07.2011 | 06.08.2011 | 09.08.2011 | 21.08.2011 | 24.08.2011 | 28.08.2011 | 30.08.2011 | 02.09.2011 | 06.09.2011 | 08.09.2011 | 05.10.2011 | 21.06.2012 | 07.07.2012 |

Newest activity : 07.07.2012

- Recent New Zealand Quakes
- Overview of current New Zealand volcanic activity

Details & Map: http://hisz.rsoe.hu/alertmap/read/index.php?pageid=svolcano_index&svid=3
Source: http://hisz.rsoe.hu/alertmap/index2.php

About Whakamaru
Whakamaru is a town in the central region of the North Island of New Zealand. The Maori words 'whaka' and 'maru' literally mean to give shelter to, or safeguard. The town was originally established as accommodation for the Whakamaru Hydro Power Station in New Zealand. As well as being a significant contributor of electricity, the Whakamaru complex is the main switching station for the upper Waikato hydropower stations and manages the transmission system for Auckland. Transpower are in the process of applying for consent to build a new transmission line between Whakamaru and Auckland. During the summer months Lake Whakamaru is used extensively for water skiing. The Whakamaru Water Ski Club is very busy during the Christmas holidays, although water skiing courses are normally available all year round.

Details of Supervolcano Reporoa Caldera - Taupo Volcanic Zone, New Zealand

VEI Index : 7
Name : Reporoa Caldera
Volcano ID : 0401-06-
Country : NZL, Australia & New-Zealand, New Zealand
Location : Taupo Volcanic Zone
Diameter : ~100 kml
Last Eruption : 230,000 years ago
   
     

Last activity : 07.04.2010 | 29.06.2010 mag 5.0 | 02.07.2010 | 03.07.2010 | 11.07.2010 | 12.07.2010 | 13.07.2010 | 14.07.2010 | 27.07.2010 | 28.07.2010 | 29.07.2010 | 30.07.2010 | 31.07.2010 | 06.08.2010 | 13.08.2010 | 16.08.2010 | 18.08.2010 | 24.08.2010 | 26.08.2010 | 28.08.2010 | 29.08.2010 | 03.09.2010 | 08.09.2010 | 14.09.2010 | 24.09.2010 | 02.10.2010 | 07.10.2010 | 09.10.2010 | 20.10.2010 | 25.10.2010 | 31.10.2010 | 03.11.2010 | 11.11.2010 | 15.11.2010 | 30.11.2010 | 04.12.2010 | 09.12.2010 | 10.12.2010 | 18.12.2010 | 26.12.2010 | 28.12.2010 | 29.12.2010 | 17.01.2011 | 18.01.2011 | 22.01.2011 | 27.01.2011 (4) | 30.01.2011 | 17.02.2011 (3) | 08.03.2011 | 10.03.2011 | 12.03.2011 | 19.03.2011 | 30.03.2011 | 16.04.2011 | 17.04.2011 | 06.05.2011 | 21.05.2011 | 23.05.2011 | 29.05.2011 | 06.06.2011 | 09.06.2011 | 16.06.2011 | 27.06.2011 | 05.07.2011 | 23.07.2011 | 06.08.2011 | 09.08.2011 | 21.08.2011 | 24.08.2011 | 28.08.2011 | 30.08.2011 | 02.09.2011 | 06.09.2011 | 08.09.2011 | 05.10.2011 | 21.06.2012 | 07.07.2012 |

Newest activity : 07.07.2012

- Recent New Zealand Quakes
- Overview of current New Zealand volcanic activity

Details & Map: http://hisz.rsoe.hu/alertmap/read/index.php?pageid=svolcano_index&svid=13
Source: http://hisz.rsoe.hu/alertmap/index2.php

About Reporoa Caldera
The Reporoa caldera is a 10 km by 15 km caldera in New Zealand's Taupo Volcanic Zone. It formed some 230,000 years ago, in a large eruption that deposited the approximately 100 km3 Kaingaroa Ignimbrites. It contains three rhyolitic lava domes (Deer Hill, Kairuru and Pukekahu) and the active Reporoa geothermal field. The Waiotapu geothermal area lies just north of the caldera rim, while the Broadlands thermal area lies to the south. The Waikato River runs through the southern half of the caldera. In April 2005, a large hydrothermal explosion occurred in a cow paddock within the caldera, creating a 50-metre crater. A similar explosion took place in the area in 1948, and smaller explosions have occurred in the intervening years.

Asia: Lake Toba, Kikai Caldera, Aira Caldera, Mount Tambora, Baekdu Mountain, Mount Aso
Details of Supervolcano Lake Toba - Northern Sumatra, Indonesian Archipelago

VEI Index : 8
Name : Lake Toba
Volcano ID : 0601-09=
Country : IDN
Location : Northern Sumatra
Diameter : ~2,800 kml
Last Eruption : ~74,000 years ago
Location at Google maps

 

 

 
    Click to see on Google maps

Last activity : 28.02.2010 | 03.04.2010 | 09.04.2010 | 01.06.2010 | 01.12.2010 | 17.12.2010 | 01.01.2011| 01.02.2011 | 10.03.2011 | 01.06.2011 | 16.06.2011 | 20.06.2011 | 09.08.2011 | 30.08.2011 | 20.02.2012 | 12.03.2012 | 14.04.2012 | 08.05.2012 |

Newest activity : 08.05.2012

Details & Map: http://hisz.rsoe.hu/alertmap/read/index.php?pageid=svolcano_index&svid=2
Source: http://hisz.rsoe.hu/alertmap/index2.php

About Lake Toba
Lake Toba (Indonesian: Danau Toba) is a lake and supervolcano, 100 kilometres long and 30 kilometres wide, and 505 metres (1,666 ft) at its deepest point. Located in the middle of the northern part of the Indonesian island of Sumatra with a surface elevation of about 900 metres (2,953 ft), the lake stretches from 2°53'N 98°31'E / -2.88°N. It is the largest volcanic lake in the world. In addition, it is the site of a supervolcanic eruption that occurred about 74,000 years ago,[2] a massive climate-changing event. The eruption is believed to have had a VEI intensity of 8. This eruption is believed to have been the largest anywhere on Earth in the last 25 million years. According to the Toba catastrophe theory to which some anthropologists and archeologists subscribe, it had global consequences, killing most humans then alive and creating a population bottleneck in Central Eastern Africa and India that affected the genetic inheritance of all humans today.

The Toba eruption (the Toba event) occurred at what is now Lake Toba about 67,500 to 75,500 years ago. The Toba eruption was the latest of a series of at least three caldera-forming eruptions which have occurred at the volcano, with earlier calderas having formed around 700,000 and 840,000 years ago. The last eruption had an estimated Volcanic Explosivity Index of 8 (described as "mega-colossal"), making it possibly the largest explosive volcanic eruption within the last twenty-five million years.

Bill Rose and Craig Chesner of Michigan Technological University have deduced that the total amount of erupted material was about 2,800 km3 (670 cu mi) â?? around 2,000 km3 (480 cu mi) of ignimbrite that flowed over the ground, and around 800 km3 (190 cu mi) that fell as ash, with the wind blowing most of it to the west. The pyroclastic flows of the eruption destroyed an area of 20,000 square kilometres (7,722 sq mi), with ash deposits as thick as 600 metres (1,969 ft) by the main vent.

To give an idea of its magnitude, consider that although the eruption took place in Indonesia, it deposited an ash layer approximately 15 centimetres thick over the entire Indian subcontinent; at one site in central India, the Toba ash layer today is up to 6 metres thick[9] and parts of Malaysia were covered with 9 m of ashfall.[10] In addition it has been calculated that 1010 metric tons of sulphuric acid[citation needed]was ejected into the atmosphere by the event, causing acid rain fallout.

The Toba caldera is the only supervolcano in existence that can be described as Yellowstone's "bigger" sister. With 2,800 km3 of ejecta, it was an even greater eruption than the supereruption (2,500 km3) of 2.1 million years ago that created the Island Park Caldera in Idaho, USA. The eruption was also about three times the size of the latest Yellowstone eruption of Lava Creek 630,000 years ago. For further comparison, the largest volcanic eruption in historic times, in 1815 at Mount Tambora (Indonesia), ejected the equivalent of around 100 km3 (24 cu mi) of dense rock and made 1816 the "Year Without a Summer" in the whole northern hemisphere, whilst the 1980 eruption of Mount St. Helens in Washington State ejected around 1.2 km3 (0.29 cu mi) of material.

The subsequent collapse formed a caldera that, after filling with water, created Lake Toba. The island in the center of the lake is formed by a resurgent dome.

Landsat photo of Sumatra surrounding Lake Toba. Though the year may never be precisely determined, the season can: only the summer monsoon could have deposited Toba ashfall in the South China Sea, implying that the eruption took place sometime during the northern summer.[12] The eruption lasted perhaps two weeks, but the ensuing "volcanic winter" resulted in a decrease in average global temperatures by 3 to 3.5 degrees Celsius for several years. Greenland ice cores record a pulse of starkly reduced levels of organic carbon sequestration. Very few plants or animals in southeast Asia would have survived, and it is possible that the eruption caused a planet-wide die-off. There is some evidence, based on mitochondrial DNA, that the human race may have passed through a genetic bottleneck around this time, reducing genetic diversity below what would be expected from the age of the species. According to the Toba catastrophe theory proposed by Stanley H. Ambrose of the University of Illinois at Urbana-Champaign in 1998, human populations may have been reduced to only a few tens of thousands of individuals by the Toba eruption.

Smaller eruptions have occurred at Toba since. The small cone of Pusukbukit has formed on the southwestern margin of the caldera and lava domes. The most recent eruption may have been at Tandukbenua on the northwestern caldera edge, since the present lack of vegetation could be due to an eruption within the last few hundred years. Some parts of the caldera have experienced uplift due to partial refilling of the magma chamber, for example pushing Samosir Island and the Uluan Peninsula above the surface of the lake. The lake sediments on Samosir Island show that it has been uplifted by at least 450 metres[7] since the cataclysmic eruption. Such uplifts are common in very large calderas, apparently due to the upward pressure of unerupted magma. Toba is probably the largest resurgent caldera on Earth. Large earthquakes have occurred in the vicinity of the volcano more recently, notably in 1987 along the southern shore of the lake at a depth of 11 km.[15] Other earthquakes have occurred in the area in 1892, 1916, and 1920-1922.

Lake Toba lies near the Great Sumatran fault which runs along the centre of Sumatra in the Sumatra Fracture Zone. The volcanoes of Sumatra and Java are part of the Sunda Arc, a result of the northeasterly movement of the Indo-Australian Plate which is sliding under the eastward-moving Eurasian Plate. The subduction zone in this area is very active: the seabed near the west coast of Sumatra has had several major earthquakes since 1995, including the 9.3 2004 Indian Ocean Earthquake and the 8.7 2005 Sumatra earthquake, the epicenters of which were around 300 km from Toba.

On 12 September 2007, a magnitude 8.5 Earthquake shook the ground in Sumatra and was felt in the Indonesian capital, Jakarta. The epicenter for this earthquake was not as close as the previous two earthquakes, but it was in the same vicinity. Most of the people who live around Lake Toba are ethnically Bataks. Traditional Batak houses are noted for their distinctive roofs (which curve upwards at each end, as a boat's hull does) and their colorful decor.

Details of Supervolcano Kikai Caldera - Osumi Islands, Kagoshima Prefecture, Japan

VEI Index : 7
Name : Kikai Caldera
Volcano ID : 0802-06=
Country : JPN
Location : Osumi Islands, Kagoshima Prefecture
Diameter : 150 kml
Last Eruption : ~6,300 years ago
   
     

Latest activity : 07.06.2010 | 04.02.2011 | 06.02.2011 | 29.04.2011 | 28.05.2011 | 07.07.2011 | 04.08.2011 | 14.04.2012 | 08.06.2012 | 10.06.2012 |

Newest activity : 10.06.2012

Details & Map: http://hisz.rsoe.hu/alertmap/read/index.php?pageid=svolcano_index&svid=9
Source: http://hisz.rsoe.hu/alertmap/index2.php


About Kikai Caldera
Kikai Caldera is a massive mostly submerged caldera up to 19 kilometres (12 mi) in diameter in the Osumi Islands of Kagoshima prefecture, Japan. It is the remains of the ancient eruption of a gigantic volcano. Kikai Caldera was the source of the Akahoya eruption, one of the largest eruptions during the Holocene (10,000 years ago to present). About 6,300 years ago, pyroclastic flows from that eruption reached the coast of southern Kyushu up to 100 km (62 mi) away, and ash fell as far as Hokkaido. The eruption produced about 150 km3 of tephra, giving it a Volcanic Explosivity Index of 7. Kikai is still an active volcano. Minor eruptions occur frequently on Mount Io, one of the post-caldera subaerial volcanic peaks on Iojima. Iojima is one of three volcanic islands, two of which lie on the caldera rim. The most recent eruptions have occurred in 2004.

Details of Supervolcano Aira Caldera - Island of Kyushu, Japan
VEI Index : 7
Name : Aira Caldera
Volcano ID : 0802-08=
Country : JPN
Location : Island of Kyushu
Diameter : ~110 kml
Last Eruption : ~22,000 years ago
Location at Google maps
 
    Click to see on Google maps

Last activity : 04.02.2011 | 07.07.2011 | 28.08.2011 | 19.10.2011 | 09.02.2012 | 14.05.2012 | 22.05.2012 | 04.06.2012 | 08.06.2012 | 10.06.2012 |

Newest activity : 10.06.2012

Details & Map: http://hisz.rsoe.hu/alertmap/read/index.php?pageid=svolcano_index&svid=11
Source: http://hisz.rsoe.hu/alertmap/index2.php

About Aira Caldera
Aira Caldera is a gigantic volcanic caldera in the south of the island of Kyushu, Japan. The caldera was created by a massive eruption, approximately 22,000 years ago. The major city of Kagoshima and the 13,000 year old Sakurajima volcano lies within the caldera. Sakura-jima, one of Japan's most active volcanoes, is a post-caldera cone of the Aira caldera at the northern half of Kagoshima Bay. Eruption of voluminous pyroclastic flows accompanied formation of the 17 x 23 km wide Aira caldera at the eruption 22,000 years ago. Together with a large pumice fall, these amounted to more than 400 km3 of tephra (VEI 7).

Details of Supervolcano Mount Tambora - Sumbawa Island, Indonesia

VEI Index : 7
Name : Mount Tambora
Volcano ID : 0604-04=
Country : IDN
Location : Sumbawa Island
Diameter : 160 kml
Last Eruption : 1815
   
     

Last activity : 01.05.2010 | 08.05.2010 | 17.07.2010 | 16.08.2010 | 27.09.2010 | 05.10.2010 | 19.10.2010 | 21.10.2010 | 13.03.2011 | 20.03.2011 | 17.06.2011 | 20.09.2011 | 07.11.2011 | 30.11.2011 | 04.12.2011 | 05.12.2011 | 14.01.2012 | 31.01.2012 | 16.02.2012 | 04.03.2012 | 30.04.2012 |

Newest activity : 30.04.2012
More info: RSOE Emergency and Disaster Information Service
Situation Updates: http://hisz.rsoe.hu/alertm ap/site/?pageid=event_upda te&edis_id=VA-20110919-323 78-IDN
In the News:
History's deadliest volcano comes back to life in Indonesia, sparking panic among villagers

Indonesia's Mount Tambora registers rising volcanic activity, raised to the second-highest alert status
Residents Evacuated As Mount Tambora Volcano Activity Increases

Farmers flee as world's deadliest volcano rumbles

Details & Map: http://hisz.rsoe.hu/alertmap/read/index.php?pageid=svolcano_index&svid=7
Source: http://hisz.rsoe.hu/alertmap/index2.php

About Mount Tambora
Mount Tambora (or Tomboro) is an active stratovolcano, also known as a composite volcano, on the Sumbawa islands, Indonesia. Sumbawa is flanked both to the north and south by oceanic crust, and Tambora was formed by the active subduction zones beneath it. This raised Mount Tambora as high as 4,300 m (14,000 ft), making it one of the tallest peaks in the Indonesian archipelago, and drained off a large magma chamber inside the mountain. It took decades to refill the magma chamber, its volcanic activity reaching its peak in April 1815. Tambora erupted in 1815 with a rating of seven on the Volcanic Explosivity Index, making it the largest eruption since the Lake Taupo eruption in about 180 CE. The 1815 eruption of Tambora was the largest volcanic eruption in recorded history. The explosion was heard on Sumatra island (more than 2,000 km (1,200 mi) away). Heavy volcanic ash falls were observed as far away as Borneo, Sulawesi, Java and Maluku islands. Most deaths from the eruption were from starvation and disease, as the eruptive fallout ruined agricultural productivity in the local region. The death toll was at least 71,000 people (perhaps the most deadly eruption in history), of whom 11,000â??12,000 were killed directly by the eruption; the often-cited figure of 92,000 people killed is believed to be an overestimate. The eruption created global climate anomalies; 1816 became known as the "Year Without a Summer" because of the effect on North American and European weather. Agricultural crops failed and livestock died in much of the Northern Hemisphere, resulting in the worst famine of the 19th century. During an excavation in 2004, a team of archaeologists discovered cultural remains buried by the 1815 eruption.[6] They were kept intact beneath the 3 m (9.8 ft) deep pyroclastic deposits. At the site, dubbed the Pompeii of the East, the artifacts were preserved in the positions they had occupied in 1815.

Details of Supervolcano Baekdu Mountain - The border North Korea and China, China

VEI Index : 7
Name : Baekdu Mountain
Volcano ID : 000
Country : CHN
Location : The border North Korea and China
Diameter : ~104 kml
Last Eruption : ~969 CE
Last activity: -
   
     

Newest activity : No data

In the News:
March 29, 2011: Concern over Super Volcano Mt. Baekdu eruption growing
http://www.koreatimes.co.kr/ww w/news/nation/2011/03/117_8410 2.html
March 29, 2011 North and South Korea meet to discuss volcano threat
http://www.newscientist.com/article/dn20307-north-and-south-korea-meet-to-discuss-volcano-threat.html

Details & Map: http://hisz.rsoe.hu/alertmap/read/index.php?pageid=svolcano_index&svid=8
Source: http://hisz.rsoe.hu/alertmap/index2.php

About Baeku Mountain
Baekdu Mountain, also known as Changbai Mountain in China, is a volcanic mountain on the border between North Korea and China. Baekdu Mountain is stratovolcano whose cone is truncated by a large caldera, about 5 km (3.1 miles) wide and 850 m (2,789 ft) deep, partially filled by the waters of Heaven Lake. The caldera was created by a major eruption in 969 AD (Âa 20 years). Volcanic ash from this eruption has been found as far away as the southern part of Hokkaido of Japan. The lake has a circumference of 12 to 14 kilometres (7.5-8.7 miles), with an average depth of 213 m (699 ft) and maximum depth of 384 m (1,260 ft). From mid-October to mid-June, the lake is typically covered with ice. The central section of the mountain rises about 3 mm every year, due to rising levels of magma below the central part of the mountain. Sixteen peaks exceeding 2,500 m (8,200 ft) line the caldera rim surrounding Heaven Lake. The highest peak, called Janggun Peak, is covered in snow about eight months of the year. The slope is relatively gentle until about 1,800 metres (5,905 ft). Water flows north out of the lake, and near the outlet there is a 70 metre (230 ft) waterfall. The mountain is the source of the Songhua, Tumen (Duman) and Yalu (Amnok) rivers.

Details of Supervolcano Mount Aso - Island of Kyushu, Kumamoto Prefecture, Japan

VEI Index :     7
Name :     Mount Aso
Volcano ID :     0802-11=
Country :     JPN
Location :     Island of Kyushu, Kumamoto Prefecture
Diameter :     > 600 kml
Last Eruption :     ~80,000 years ago
   
     

Last activity : 13.05.2010 | 28.02.2011 | 05.10.2011 | 29.01.2012 | 04.06.2012 |

Newest activity : 04.06.2012

Details & Map: http://hisz.rsoe.hu/alertmap/read/index.php?pageid=svolcano_index&svid=14
Source: http://hisz.rsoe.hu/alertmap/index2.php

About Mount Aso
Mount Aso is the largest active volcano in Japan, and is among the largest in the world. It stands in Kumamoto Prefecture, on the island of Kyushu. Its peak is 1592 m above sea level. Aso has one of the largest caldera in the world (25 km north-south and 18 km east-west).[1] The caldera has a circumference of around 120 km (75 miles), although sources vary on the exact distance. The central cone group of Aso consists of five peaks: Mt. Neko, Mt. Taka, Mt. Naka, Mt. Eboshi, and Mt. Kishima. The highest point is the summit of Mt. Taka, at 1592 m above sea level. The crater of Mt. Naka, the west side of which is accessible by road, contains an active volcano which continuously emits smoke and has occasional eruptions. Only the northernmost crater (the first crater) has been active for the last 70 years -- 1974, 1979, 1984-1985 and 1989-1991.

The present Aso caldera formed as a result of four huge caldera eruptions occurring over a range of 90,000â??300,000 years ago. The caldera, one of the largest in the world, contains the city of Aso as well as Aso Takamori-cho and South Aso-mura. The somma enclosing the caldera extends about 18 km east to west and about 25 km north to south. Viewpoints from the somma overlooking the caldera are perched upon lava formed before the volcanic activity which created the present caldera. Ejecta from the huge caldera eruption 90,000 years ago covers more than 600 km3 and roughly equals the volume of Mt. Fuji; it is presumed that the pyroclastic flow plateau covered half of Kyushu.

The eruption which formed the present somma occurred approximately 300,000 years ago. Four large-scale eruptions (Aso 1 â?? 4) occurred during a period extending from 300,000 to 90,000 years ago. As large amounts of pyroclastic flow and volcanic ash were emitted from the volcanic chamber, a huge depression (caldera) was formed as the chamber collapsed. The fourth eruption (Aso 4) was the largest, with volcanic ash covering the entire Kyushu region and even extending to Yamaguchi Prefecture. Mt. Taka, Mt. Naka, Mt. Eboshi, and Mt. Kishima are cones formed following the fourth above-mentioned huge caldera eruption. Mt. Naka remains active today. It is presumed that Mt. Neko is older than the fourth huge caldera eruption. Aso's pyroclastic flow deposits (welded tuff) were utilized for bridge construction in the region. There are approximately 320 arched stone bridges in Kumamoto Prefecture, including the Tsujun-kyo and Reidai-kyo bridges on Midorikawa River, which are important national cultural properties.

Europe: Laacher See. Campi Flegrei, Santorini Volcano
Details of Supervolcano Laacher See - Rhineland-Palatinate, Germany

VEI Index : 7
Name : Laacher See
Volcano ID : 000
Country : DEU
Location : Rhineland-Palatinate
Diameter : ~300 kml
Last Eruption : ~12,900 years ago
Location at Google maps

 

 

 

 
    Click to see on Google maps

Last activity : 31.03.2010 | 11.04.2010 | 30.07.2010 | 10.08.2010 | 14.08.2010 | 27.08.2010 | 09.15.2010 | 23.12.2010 | 14.02.2011 | 15.02.2011 | 16.02.2011 | 25.03.2011 | 12.04.2011 (2) | 15.04.2011 | 11.05.2011 | 15.05.2011 | 25.05.2011 | 18.06.2011 | 05.08.2011 | 10.11.2011 | 05.12.2011 | 08.12.2011 | 19.12.2011 | 21.02.2012 | 28.02.2012 | 12.03.2012 | 29.03.2012 | 27.04.2012 | 22.05.2012 |

Newest activity : 22.05.2012


Jan 2 2012:
Unusual geological event in Germany (Rhineland-Palatinate, Laacher See) on Monday, 02 January, 2012 at 15:05 (03:05 PM) UTC
- Fresh activity near a dormant 'super volcano' in Germany has left experts worried about a possible eruption. Britain's Daily Mail wrote the eruption from the 'monster' underneath Laacher See lake near Bonn, could eject billions of tons of magma which in turn could cause wid espead devastation in Europe and even 'short-term global cooling'. The mountain last erupted 12,900 years ago. Volcanologists have estimated the mountain's size to be similar to that of Mount Pinatubo in the Philippines - responsible for the biggest ejection of the 20th century. Pinatubo threw up '10 billion tons of magma, 20 billion tons of sulphur dioxide 16 cubic kilometres of ash and caused a 0.5C drop in global temperatures'. Experts near the Laacher See site have detected carbon dioxide bubbles on the lake's surface and believe the mountain in Germany could be active again http://hisz.rsoe.hu/alertmap/ site/ ?pageid=event_desc&edis_id=UGE- 20120102-33614-DEU

Is a super-volcano just 390 miles from London about to erupt?
* It's similar in size to Mount Pinatubo, which in 1991 gave us the biggest eruption of the 20th century
* Billions of tons of ash and magma would be ejected
* Southern England would be covered in ash
http:// www.dailymail.co.uk/ sciencetech/ article-2081219/ Is-super-volcano-Laacher-Se e-lake-Germany-blow.html

Fearmongering Gets Started in 2012: Laacher See is Not “Ready to Blow” http://www.wired.com/wiredscience/2012/01/fearmongering-gets-started-in-2012-laacher-see-is-not-ready-to-blow/

Situation Update No. 1 on Tuesday, 03 January, 2012 at 04:15 UTC - The Daily Mail writes today "Is a super-volcano just 390 miles from London about to erupt?", suggesting that the Laacher See volcano in Western Germany could "erupt any time" and produce a large eruption such as the devastating (but still moderate, not super-volcano at all) Plinian eruption 11,900 years ago. Unfortunately, what the Daily Mail writes, is more dark fantasy than anything else. There is no scientific background to assume that an eruption in a foreseeable future could be in the making in this area. To read more and why, please have a look at the brilliant post about it on Dr. Erik Klemetti's Eruptions Blog http://hisz.rsoe.hu/ alertmap/site/%27http:// www.wired.com/wiredscience/ 2012/01/ fearmongering-gets-started- in-2012-laacher-see-is-not -ready-to-blow/%27
Source: http://hisz.rsoe.hu/ alertmap/site/ ?pageid=event_update_read&e dis_id=UGE-20120102-33614- DEU&uid=12042

Laacher See volcano (Germany): no reason to think it is going to erupt anytime soon http://www.volcanodiscovery.com/view_news/4227/Laacher-See-volcano-Germany-no-reason-to-think-it-is-going-to-erupt-anytime-soon.html

European Volcano Bubbles But Will it Blow? Just because a volcano bubbles doesn't mean it's ready to blow. http://news.discovery.com/earth/degassing-the-volcano-bubbles-scare-as-nothing-but-hot-air-120105.html


PDF: Impact of the Late Glacial Eruption of the Laacher See Volcano,
Central Rhineland, Germany

PDF: Testing the ‘Laacher See hypothesis’: a health hazard perspective




Details & Map: http://hisz.rsoe.hu/alertmap/read/index.php?pageid=svolcano_index&svid=10
Source: http://hisz.rsoe.hu/alertmap/index2.php
Info: http://www.volcanodiscovery.com/laacher_see.html

   



About Laacher See
Laacher See or Laach Lake (in English) is a caldera lake in Rhineland-Palatinate, Germany, situated close to the cities of Koblenz, Mayen (11 km), and Andernach (14 km). Just like the nearby 'Wehrer Kessel' volcano and Rieden volcano, the Laacher See volcano forms a volcanic caldera in the Eifel mountain range. It is part of the area called "East Eifel volcanic field". The great Eifel lake takes its name from the Old High German word "lacha" which in turn is derived from Latin "lacus" as English "lake". Thus the name literally means "Lake of the Lake" similar to the "Loch Lochy" in the Scottish Highlands with the same meaning. The lake lies 259 m above sea level, is 8 km in circumference, and surrounded by a ring of high hills. The water is blue, very cold and bitter to the taste. The lake has no natural outlet and so the water level changes considerably due to evaporation and rainfall conditions. On the western side lies the Benedictine monastery of Maria Laach Abbey (Abbatia Lacensis), founded in 1093 by Henry II of Laach of the House of Luxembourg, first count palatine of the Rhine who has had his castle opposite to the monastery above the eastern lakeside.

The caldera was formed after the Laacher See eruption dated to 12'900 years ago. The remaining crust collapsed into the empty magma chamber below, probably two or three days after the eruption.[4] With an estimated 6 km3 of magma erupted, this eruption was slightly larger than the 1991 eruption of Pinatubo (Philippines). The Laacher eruption concides with the onset of the abrupt Younger Dryas reglaciation, which brought renewed very cold conditions to the northern hemisphere from 12.9 to 11.6 ka. However, any relationship between this climate change and the eruption is speculative; eruptions of the size of the Laacher See eruption usually cause only short-term global cooling. Remains of this eruption can be found all over Europe and the tephra is often used for dating of sediments. A number of unique minerals can be found in the region, and quarries mine the stone as a building material. The Laacher is a potentially active volcano, proven by seismic activities and heavy thermal anomalies under the lake. Carbon dioxide gas from magma still bubbles up at the southeastern shore, and scientists believe that a new eruption could happen at any time, which, today, would be a disaster beyond all description.

Details of Supervolcano Campi Flegrei - Napels, Italy


VEI Index :
7
Name : Campi Flegrei
Volcano ID : 0101-01=
Country : ITA
Location : Naples
Diameter : 500 kml
Last Eruption : ~39,280 years ago
Location at Google maps

 

 

 

 
    Click to see on Google maps

Last activity : 18.08.2010 | 22.08.2010 | 23.08.2010 | 31.08.2010 | 10.09.2010 | 12.09.2010 | 15.09.2010 | 21.09.2010 | 11.10.2010 | 15.10.2010 | 29.10.2010 | 11.11.2010 | 27.11.2010 | 30.11.2010 | 02.12.2010 | 06.12.2010 | 15.12.2010 | 20.12.2010 | 31.12.2010 | 13.01.2011 | 27.01.2011 | 05.02.2011 | 06.02.2011 | 11.03.2011 | 12.03.2011 | 13.03.2011 | 14.03.2011 | 15.03.2011 | 16.03.2011 | 17.03.2011 (7)| 18.03.2011 | 19.03.2011 | 20.03.2011 | 21.03.2011 | 22.03.2011 (5) | 24.03.2011 | 27.03.2011 | 29.03.2011 | 31.03.2011 | 01.04.2011 (2) | 02.04,2011 | 04.04.2011 | 09.04.2011 | 10.04.2011 | 12.04.2011 | 13.04.2011 | 14.04.2011 | 15.04.2011 | 17.04.2011 (6) | 18.04.2011 (3)| 19.04.2011 | 21.04.2011 (2)| 24.04.2011 | 27.04.2011 | 02.05.2011 | 04.05.2011 | 07.05.2011 | 15.05.2011 | 16.05.2011 | 22.05.2011 | 24.05.2011 | 29.05.2011 | 30.05.2011 | 31.05.2011 | 01.06.2011 | 06.06.2011 | 07.06.2011 | 08.06.2011 | 13.06.2011 | 22.06.2011 | 23.06.2011 | 25.06.2011 | 26.06.2011 | 27.06.2011 | 28.06.2011 | 30.06.2011 | 04.07.2011 | 07.07.2011 | 15.07.2011 | 27.07.2011 | 28.07.2011 | 31.07.2011 | 04.08.2011 | 05.08.2011 | 07.08.2011 | 09.08.2011 | 14.08.2011 | 16.08.2011 | 06.09.2011 | 07.09.2011 | 08.09.2011 | 17.09.2011 | 19.09.2011 | 28.09.2011 | 01.10.2011 | 03.10.2011 | 19.10.2011 | 22.10.2011 | 20.11.2011 | 25.11.2011 | 01.01.2012 | 31.01.2012 | 13.02.2012 | 22.02.2012 | 14.03.2012 | 18.03.2012 | 22.03.2012 | 25.03.2012 | 02.04.2012 | 04.05.2012 | 22.05.2012 | 23.05.2012 | 03.06.2012 | 05.06.2012 | 06.06.2012 | 12.06.2012 |

Newest activity : 12.06.2012


Details & Map: http://hisz.rsoe.hu/alertmap/read/index.php?pageid=svolcano_index&svid=12
Source: http://hisz.rsoe.hu/alertmap/index2.php

About Campi Flegrei
Campi Flegrei, also known as the Phlegraean Fields, is a large 13 kilometres (8.1 mi) wide caldera situated to the west of Naples, Italy. It was declared a regional park in 2003. Lying mostly underwater, the area comprises 24 craters and volcanic edifices. Hydrothermal activity can be observed at Lucrino, Agnano and the town of Pozzuoli. There are also effusive gaseous manifestations in the Solfatara crater, which is known as the mythological home of the Roman god of fire, Vulcan. The area also features bradyseismic phenomena, which are most evident at the temple of Serapis in Pozzuoli. Volcanic deposit indicating possible eruption dated Ar at 315, 205, 157 and 18.0 kya. The caldera, which now is essentially at ground level, is accessible on foot. It contains a large number of fumaroles, from which steam can be seen issuing, and over 150 pools of boiling mud at last count. Several subsidiary cones and tuff craters lie within the caldera. One of these craters is filled by Lake Avernus. In 1538, an eight-day eruption in the area deposited enough material to create a new hill, Monte Nuovo. It has risen about 2 metres (6.6 ft) from ground level since 1970. It is a volcano capable of producing VEI 7 eruptions, as large as that of Tambora in 1815. At present, the Campi Flegrei area comprises the Naples districts of Agnano and Fuorigrotta, the area of Pozzuoli, Bacoli, Mount Procida, Quarto, the Phlegrean Islands (Ischia, Procida and Vivara). Recent inflation of the caldera centre in the vicinity of Pozzuoli may presage an eruptive event within decades.

Details of Supervolcano Santorini - Island of Thera, Greece

VEI Index: 7
Name: Santorini Volcano
Volcano ID: 0102-04=
Country:
GRC
Location:
Island of Thera
Diameter:
Last Eruption:
1927

 

 

 

 

 
    Click to see map

Last activity: 13.11.2011 | 14.11.2011 | 15.11.2011 | 19.11.2011 | 21.11.2011 | 22.11.2011 | 23.11.2011 | 24.11.2011 | 26.11.2011 | 29.11.2011 | 30.11.2011 | 06.12.2011 | 07.12.2011 | 08.12.2011 | 09.12.2011 | 10.12.2011 | 12.12.2011 | 13.12.2011 | 15.12.2011 | 18.12.2011 | 21.12.2011 | 22.12.2011 | 24.12.2011 | 25.12.2011 | 26.12.2011 | 29.12.2011 | 30.12.2011 |
2012:
02.01.2012 | 03.01.2012 | 06.01.2012 | 08.01.2012 | 09.12.2011 | 12.01.2012 | 13.01.2012 | 17.01.2012 | 18.01.2012 | 22.01.2012 | 23.01.2012 | 24.01.2012 | 26.01.2012 | 27.01.2012 | 28.01.2012 | 29.01.2011 | 30.01.2012 | 31.01.2012 | 03.02.2012 | 04.02.2012 | 05.02.2012 | 06.02.2012 | 08.02.2012 | 10.02.2012 | 11.02.2011 | 12.02.2012 | 13.02.2012 | 15.02.2012 | 16.02.2012 | 18.02.2012 | 20.02.2012 | 23.02.2012 | 25.02.2012 | 28.02.2012 | 29.02.2012 | 04.03.2012 | 05.03.2012 | 06.03.2012 | 22.03.2012 | 25.03.2012 | 27.03.2012 | 01.04.2012 | 03.04.2012 | 12.04.2012 | 16.04.2012 | 17.04.2012 | 18.04.2012 | 23.04.2012 | 28.04.2012 | 29.04.2012 | 30.04.2012 | 08.05.2012 | 17.05.2012 | 25.05.2012 | 29.05.2012 | 04.06.2012 | 07.06.2012 | 12.06.2012 | 03.07.2012 | 04.07.2012 | 05.07.2012 |

Newest activity : 05.07.2012


Jan 3 2012:
Situation Update No. 2 on Tuesday, 03 January, 2012 at 04:17 UTC
The seismic unrest beneath Santorini which had started in July 2011 continues into 2012, greeting the world with a small swarm of quakes beneath the caldera. The slightly increased number of quakes is concentrated on the volcano-tectonic Kameni line, which stretches SW-NE through the caldera and extends outside, especially to the NE where the submarine volcano Kolumbo is located 8 km off the coast . The alignment defines a tectonic graben structure underlying Santorini and has been used for rising magma for nearly all past eruptions of the volcano. http://hisz.rsoe.hu/alertmap/ site/ ?pageid=event_update_read&edis_ id=VA-20111214-33385-GRC&uid=1 2044

Jan 29 2012
Situation Update No. 3 on Sunday, 29 January, 2012 at 16:17 UTC
The highly unusual swarm of earthquakes SW of Santorini on the main fault zone that also defines the volcanic vents of the region continues with about 10 quakes larger than magnitude 2 during the past 24 hours. 2 of the quakes were magnitude 4 and 4.7, respectively. Greek media start to pick up the story and become increasingly interested: Today the wall of silence seems to be falling as a major sunday newspaper has exclusive interviews with a number of greek seismologists and geologists on the matter and some information is now public.

1. Inflation : From 1993 until 2010 there was deflation in the caldera of about 1cm/year, since the beggining of 2011 that has changed to inflation centered at a radius of 15 km on the north part of the caldera, rapid episodes of inflation have been recorded at intervals that coincide with bursts in seismic activity. Since August the intensity of the phenomenon warranted a rise to alert level 4 (red), where it has remained ever since.

2. Magma column : A displacement of 107 cubic meters has been located 1km north of the central island of Nea Kameni at a depth of 4 km, it is hypothesized that it is a magma intrusion, located right at the center of the most seismicly active part of the caldera.

3. CO2 : Co2 levels have jumped to 39 tonnes/day along with the emission of other gasses, a rising gas column has been observed outside the port of Thirassia in the caldera (the island on the west rim).

4. Water temperature. : The rise in sea water temperature in the caldera has been confirmed.

Most of the Greek scientists have brushed any conserns saying that conditions are normal and that has happened before, Euthimios Lekkas, geologist from Athens University, even said on TV that there is no danger even of a large earthquake in the visinity of the island, the next day there were 3 earthquakes magnitute 5 and above, 50 km to the SW at the other end of the fault line. Noticable exception, foreign geologists have a very different opinion, Michelle Parks, a geologist from Oxford, mentioned that the evidence points to something important, there is volcanic activity and the volcano is now potencially active at depth. Consencus is that the volcano has woken up in early 2011, but opinions differ mainly on the lines of nationality of the scientists.
http://hisz.rsoe.hu/alertmap/site/?pageid=event_update_read&edis_id=VA-20111214-33385-GRC&uid=12168

Feb 1 2012
'Atlantis' volcano gives tips for mega-eruptions - The archaeological site of Akrotiri on the Greek Santorini (Thera) island is pictured in 2005. Around 1630 BC, a super-volcano blew apart the Aegean island of Santorini, an event so violent that some theorists say it nurtured the legend of Atlantis. http://www.physorg.com/news/ 2012-02-atlantis-volcano-mega-e ruptions.html

Situation Update No. 6 on Wednesday, 21 March, 2012 at 20:15 UTC
Last week saw a lot of news about a new study that measured inflation at Santorini in the Aegean Sea occurring over the last 5 years. Combine that with the sharp increase in earthquakes, and it all points to magma rising under the famed caldera. The lead scientist on the research, Andrew Newman of Georgia Tech, estimates ~0.14 cubic km of magma has entered the upper part of the magmatic system under Santorini since January 2011 (clearly not an insignificant volume). You can get an idea of the rates and directions of inflation from this animated GIF from the research group. Now, any time a volcano with a legendary eruption like the Thera eruption that may have played a role in the fall of the Minoan empire, you definitely expect hyperbole and hysteria from the media. However, if an eruption happens at Santorini, expect it to be like the eruptions in 1939 and 1950. These eruptions added to the domes in the middle of the Thera caldera – impressive events on their own, but not the cataclysmic event of ~1610 B.C. http://hisz.rsoe.hu/alertmap/site/?pageid=event_update_read&edis_id=VA-20111214-33385-GRC&uid=12437

Situation Updates: http://hisz.rsoe.hu/alertmap/ site/ ?pageid=event_update&edis_id=VA -20111214-33385-GRC

Volcano Activity in Greece on Wednesday, 18 April, 2012 at 02:43 (02:43 AM) UTC. http://hisz.rsoe.hu/alertmap/site/?pageid=event_desc&edis_id=VA-20120418-34924-GRC

Santorini's volcanic basin is showing signs of resumed volcanic activity. According to researchers at the Georgia Institute of Technology, satellite research tools suggest that a build-up of some 14m cubic metres of lava at a depth of 5km took place between September and January last. Widely touted by academics as the cause of the Minoan civilisation's obliteration, what is left of the volcano - a small archipelago - last witnessed significant geological activity in January of 2011. Having published his findings in the latest issue of Geophysical Research Letters, the Institute's Andrew Newman says "our research shows that the lava build-up is accelerating," suggesting that even though the build-up may not indicate an imminent eruption, it may cause minor volcanic events, including ash fall-out, landslides and even tsunami type phenomena.

Volcano Behind Atlantis Legend Re-Awakens - The volcano that may have given rise to the legend of Atlantis has awakened, researchers say. http://news.yahoo.com/volcano-behind-atlantis-legend-awakens-140601511.html



Details & Map: http://hisz.rsoe.hu/alertmap/read/index.php?pageid=svolcano_index&svid=18
Source: http://hisz.rsoe.hu/alertmap/index2.php
Updates: http://www.volcanodiscovery.com/santorini/seismic-activity-2011.html

About Santorini Volcano
The Minoan eruption of Thera, also referred to as the Thera eruption or Santorini eruption, was a major catastrophic volcanic eruption with a Volcanic Explosivity Index (VEI) of 6 or 7 and a Dense-rock equivalent (DRE) of 60 cubic kilometres (14 cu mi),[1] which is estimated to have occurred in the mid second millennium BCE. The eruption was one of the largest volcanic events on Earth in recorded history. The eruption devastated the island of Thera (also called Santorini), including the Minoan settlement at Akrotiri, as well as communities and agricultural areas on nearby islands and on the coast of Crete. The eruption seems to have inspired certain Greek myths[6] and may have caused turmoil in Egypt. Additionally, it has been speculated that the Minoan eruption and the destruction of the city at Akrotiri provided the basis for or otherwise inspired Plato's story of Atlantis.

More info


Known Super Eruptions

VEI 8

VEI 8 eruptions have happened in the following locations.

The Lake Toba eruption plunged the Earth into a volcanic winter , which was claimed to have eradicated 60% of the human population, though humans managed to survive even in the vicinity of the volcano and the theory is disputed.

VEI 7

VEI-7 volcanic events, less colossal but still supermassive, have occurred in the geological past. The only ones in historic times are Tambora , in 1815, Lake Taupo (Hatepe), around 180 CE, and possibly Baekdu Mountain , 969 CE (± 20 years).

By way of comparison, the 1980 Mount St. Helens eruption was at the lower end of VEI-5 with 1.2 km 3 , and both Mount Pinatubo in 1991 and Krakatoa in 1883 were VEI-6 with 10 km 3 (2.4 cu mi) and 25 km 3 (6.0 cu mi) DRE, respectively.


 


Volcano Webcams
Worldwide

AMERICA

Volcano Hazards Program Webcams | Link
Below is a list of webcams of U.S. volcanoes. All webcams are operated by the USGS, unless otherwise noted.
The images below are not the webcams but links to the webcams. The images were taken in the past by cameras and are meant to show the approximate area, not necessarily the view from the webcam.

Pu`u `O`o vent, Kilauea Volcano (HVO) University of Alaska Geophysical
Institute Augustine camp on the
west side of the island, Alaska (AVO)
Halema`uma`u from HVO,
Kilauea Volcano (HVO)
Near Infrared (NIR) Augustine, Alaska
- best during low light (AVO)
       
       
       
       
       
       
       
       
       

Other webcams:


Caribbean/Central America

Montserrat

Soufriere Hills - info - webcam  (no automatic update, must refresh to see a new image)
SOUFFRIERE HILLS – MVO Satellite -

Martinique (France)

Pelee - info - webcam (currently down – January 2011) 
Guadeloupe (France)
La Soufriere de Guadeloupe - info - webcam

Costa Rica

Arenal -  info  -  webcam  (currently down)
Turrialba - info - webcam
Costa Rica : TURRIALBA – ovsicori
Costa Rica : ARENAL – Ustream - Satellite -

Mexico

Colima - info - webcam
Popocatépetl - info - webcam: one | two  | three
COLIMA – Ucol Satellite -
POPOCATEPETL - Segob1 Segob2 Segob3 Satellite

El Salvador

Santa Ana / Ilamatepec - info - webcam
SAN SALVADOR - LaPrensaGrafica

Guatemala

PACAYA – Satellite -

South America

Colombia

Galeras - info - webcam
Huila - info - webcams:  one  | two
Purace - info - webcam
GALERAS - Ingeominas
HUILA - Ingeominas1 - Ingeominas2
PURACE - Ingeominas

Ecuador

Cotopaxi - info - webcam
Tungurahua - info - webcam
COTOPAXI – IGEPN1 IGEPN2 IGEPN3
TUNGURAHUA – IGEPN1 IGEPN2 IGEPN3 IGEPN4 IGEPN5 IGEPN6
PICHINCHA – Satellite -

Chile

Chaitén -  info  - webcams: Caldera | Camping  | Aeródromo
Llaima - info - webcams: Melipeuco | Cherquenco | Curacautín  | Laguna Verde  | POVI (currently down)
Planchon Peteroa -  info  -  webcam
Osorno and Calbuco - info Osorno  | info Calbuco - webcam
Villarrica - info - webcams: CVV | Llafenco | Pucon  | Calafquen  | POVI
Llaima-Vill-Chaitén-Planchón
Villarrica
Llaima
DGAC-Chaitén
Cordon Caulle - Sernageomin1 Sernageomin2 Sernageomin3
Laima - Sernageomin1 Sernageomin2 Sernageomin3 Sernageomin 4
Villarica - Sernageomin1 Sernageomin2 Sernageomin3 Sernageomin 4
Chaiten - Sernageomin1 Sernageomin2
Planchon Peteroa - Sernageomin1
Lascar - Sernageomin1
San Pedro - Sernageomin1
Osorno - Sernageomin1
Calbuco - Sernageomin1
Hudson - Sernageomin1


North America

United States

Yellowstone - info | YVO - webcams: Old Faithful (currently down) | Mammoth Springs  | Down Basin/Old Faithful
Pisgah Crater - info 1 | 2 - Radar 1 | 2 - List of Webcams near North Barstow, California, USA | more webcams 1 | 2 - coordinates: 34 34 0 N , 116 17 26 W

Cascade Range / CVO

Adams -  info  -  webcam
Baker - info - webcams: one | two | three
Crater Lake -  info  -  webcam  (offline until June)
Hood - info - webcams:  Mt. Hood Meadows  |  Timberline
Rainier - info - webcams:  from Paradise  | from Tacoma
Saint Helens - info - webcams: Hi Resolution | low Resolution
Shasta - info - webcam
California : MOUNT SHASTA – Snowcrest
Hawaii : KILAUEA - USGS1 USGS2
Montana : YELLOWSTONE NATIONAL PARK - National Park Service1
Oregon : MOUNT HOOD - Mt Hood Info
Oregon : CRATER LAKE – National Park Service1
Washington : MOUNT ST HELENS – USDA Forest Service1 - Satellite -
Washington : MOUNT RAINIER - National Park Service
Washington : MOUNT BAKER  - Alltravelcams NWClaenair
Washington : MOUNT ADAMS - Petries1
Washington : CASCADE VOLCANOES – SkiMountaineer

Antarctica

Erebus - info | monitoring - webcams:  one  (down) | Scott Base
MOUNT EREBUS – Antarctica New Zealand


PACIFIC

Hawai'i (United States)
Haleakala  -  info  -  webcam
Kilauea  - info  - webcams:  Pu'u O'o  |  Thanksgiving Eve Breakout  |  Halema`uma`u Crater from HVO  |  Halema`uma`u Crater overlook  | Napau Fissure  | Kamoamoa West Fissure
Mauna Kea -  info  -  webcam
Mauna Loa - info - webcam

Mariana Islands (United States)
Anatahan - info - webcam

Western/Southern Pacific

Japan
 
The Japanese Meteorological Agency has a page of 40+ webcams
Asama  -  info  - webcams:  one  | two  | three
Aso  -  info  - webcams:  one  | two  | three  | four - multiple views  | five
Bandai - info - one  | two
Chokai - info - webcam
Daisetsu - info - webcam
Fuji - info - webcams:  one  | two  | Shimiza port  | Fujinomiya City  | Lake Tanuki  | Lake Saiko  | Lake Kawaguchi  | Mt. Mitsutoge  | Fujiyoshida City  | Oshino  | Gotemba
Hiuchi - info - webcam
Iwate  -  info  - webcams:  one  | two
Kirishima - info - webcams: one  (sixth and seventh from bottom on right menu) | two  | three
Myoko - info - webcam
Nikko-Shiran e - info - webcam
Niseko - info - webcam
Norikura - info - webcam
Ontake - info - webcam
Rausu - info - webcam
Rishiri - info  - webcams:  one  | two
Sakurajima - info - two webcams: one | two  | three (fourth and fifth from bottom) | four
Shitoksu - info - webcam
Unzen - info - webcam
Usu - info - webcam
Yake - info - webcams: one | two
Yotei - info - webcams:  one  | two
SAKURAJIMA – Kyoto University
MOUNT FUJI – Live Fuji

New Zealand
Lake Taupo  -  info  -  webcam (Looking across Lake Taupo with Mount Ruapehu and Mount Ngauruhoe. Thanks to Suncourt Hotel. Updates every 10 minutes)
Ngauruhoe (Tongariro)  -  info  -  webcam
Ruapehu - info - webcam
Ruapehu and Ngauruhoe (Tongariro) - webcam
Taranaki  -  info  - webcams:  one  |  two
White Island - info - webcams: Crater | Coast (from Whakatane)  | Crater two
RUAPEHU - Geonet
WHITE ISLAND – Geonet
MOUNT EGMONT - GeonetTaranaki

Kermadec Islands
(monitoring administered by GNS New Zealand)
Raoul Island  - info - webcam

Philippines
Taal - info - webcam
MAYON – Satellite -

Northern Pacific

Russia
Bezymianny - info - webcam
Gorely - info - webcam
Kliuchevskoi  -  info  - webcams:  one  | two  | three
Koryaksky - info - webcams:  one  | two
Koryaksky and Avachinsky - info Avachinsky - webcam
Shiveluch  - info - webcams:  one  | two
Kamchatka : KLYUCHEVSKOY - kvert1 kvert2 Satellite -
Kamchatka : SHEVELUCH - kvert1 kvert2
Kamchatka : BEZYMIANNY - kvert1
Kamchatka : KIZIMEN - kvert1
Kamchatka : GORELY - kvert1
Kamchatka : AVACHINSKY - kvert1
Kamchatka : KORYAKSKY & AVACHINSKY - kvert1

Alaska (United States)
AVO has a multitude of webcams – and the ability to watch multiple webcams simultaneously. 
Akutan -  info  -  webcam
Augustine - info - webcams: Island | Lagoon | Low light  | from Homer 
Cleveland  -  info  -  webcam
Fourpeaked  -  info  -  webcam
Katmai  -  info  -  webcam
Pavlof  -  info  -  webcam
Redoubt - info - webcams: Hut | DFR  | Rig
Shishaldin  -  info  -  webcam
Spurr -  info  - webcams:  Unocal  |  CKT
Ugashik-Peulik  -  info  -  webcam
Veniaminof - info - webcam
MOUNT REDOUBT - USGS1
SHISHALDIN – Satellite -

Indian Ocean

Indonesia
Anak Krakatau - info - webcam (tends to be down)
Java : MERAPI - Badan Geologi Satellite
Merapi - info - webcams:  one  | two  | three
Merapi
Sinabung - info - webcam

Reunion Island (France)
Piton de la Fournaise - info - webcams: four different views | Piton Partage
Réunion : PITON DE LA FOURNAISE – FournaiseInfo IPGP -


EUROPE

Azores (Portugal)

Pico - info - webcams: one  | two  | three

Italy

ETNA – Etna Trekking Lave Volcans Satellite -
STROMBOLI - INGV Satellite -
VULCANO - INGV
Etna - info - multiple INGV webcams  | Hotel Corsaro: links to many Etna webcams | Etna Cams
Stromboli and Vulcano - info Stromboli - info Vulcano - multiple webcams
Vesuvius - info - multiple webcams

France

Puy de Dôme - info - webcam

Greece

Santorini - info - webcams: one | two (summer only)
SANTORINI - TravelToSantorini

Turkey

Ararat - info - webcam
ARARAT – Arminco -

Canary Islands
(Spain)
Tenerife/Teide – info - webcams: one | two | Ustream
Canary Islands : EL HIERRO – Las Restinga 1 and 2 Las Puntas (El Golfo) El Pinar1 - El Pinar2 Earthquake-Report

Iceland

*Many of the Icelandic webcams hosted by ruv. require Windows Media.
You can also see
webcams from all around Iceland as well.
Eyjafjallajökull  -  info  - webcams:  from Þórólfsfel  |  two  |  three
Grímsvötn - info - one (nearby glacial outlet) | two
Hekla  - info - webcams:  one*  | two
Katla * - info - webcam
Öræfajökull - info - webcam
Surtsey (Vestmannaeyjar) - info - webcam
EYJAFJALLAJOKULL – Mila
KATLA – RUV Mila
HEKLA – RUV Mila

Jan Mayen Island (Norway)

Beerenburg - info - webcam

 

AFRICA

Kenya

Mount Kenya: webcam one | two
Kilimajaro webcam
Tawi Cam Amboseli, Kenya webcam
Kilimanjaro Webcam, Kenya one | two
Kanzi webcam
Mount Longonot webcam
Lake Nyos webcam


More to come ..

 

World Map of Volcanoes, Earthquakes, Impact Craters, and Plate Tectonics http://mineralsciences.si.edu/tdpmap/

Interactive map : http://nhb-arcims.si.edu/ThisDynamicPlanet/index.html

Learn more about Super Volcanoes : Interactive - Hotspot Yellowstone http://dsc.discovery.com/convergence/supervolcano/supervolcano.html

 

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Quick Overview  
Super Volcano Newest Activity Webcams
America dd|mm|yy  
Yellowstone Caldera 04.07.2012 Webcams
Island Park Caldera 04.07.2012  
Long Valley Caldera 07.07.2012  
Valles Caldera 05.05.2010  
La Garita Caldera No data  
Australia & New Zealand  
Lake Taupo 07.07.2012 Webcam
Whakamaru 07.07.2012  
Reporoa Caldera 07.07.2012  
Asia  
Lake Toba 08.05.2012  
Kikai Caldera 10.06.2012  
Aira Caldera 10.06.2012  
Mount Tambora 30.04.2012  
Baekdu Mountain No data  
Mount Aso 04.06.2012 Webcam
Europe  
Laacher See 22.05.2011  
Campi Flegrei 12.06.2012  
Santorini Volcano 04.07.2012  
 
Realtime Data
Current Alerts for U.S. Volcanoes
U.S. Volcanoes and Current Activity Alerts (Interactive Map)
Worldwide Volcanoes
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Monitoring data by observatory
News
Super-Volcano Trigger Found
Zombie Volcano or New Supervolcano?
Yellowstone Supervolcano's Size Exceeds Expectations
 

Super Volcanoes BBC Documentary
Dramatic footage Icelandic erupting Volcano
 

Links

Alphabetical partial list of U.S. Volcanoes