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Archive for the ‘Soufrière Hills’ Category

Satellite Images of Recent Volcanic Activities

Posted by feww on February 16, 2010

Recent Activity at Shiveluch Volcano


Shiveluch Volcano on Russia’s Kamchatka Peninsula ejected a plume of ash, volcanic gases and steam, while dark rivulets flowed down the volcano’s snowy slopes. The Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) on NASA’s Terra satellite captured this image on February 13, 2010. Dark flows on the snowy slopes could result from lava and/or lahars—avalanches of water and mud likely prompted by heat from the summit.

Shiveluch is among Kamchatka’s most active volcanoes. In mid-February 2010, the Alaska Volcano Observatory reported that activity at Shiveluch had been elevated above background levels for days, including a lava flow as well as ash plumes reaching an altitude of 5.2 kilometers (17,060 feet). NASA Earth Observatory image created by Jesse Allen. Caption by Michon Scott. Edited by FEWW.

Partial Dome Collapse at Soufriere Hills


Soufrière Hills Volcano on the Caribbean island of Montserrat experienced a partial dome collapse on February 11, 2010 at 12:35 pm local time. Lasting nearly an hour, the event sent a plume 15 km (50,000 feet) skyward, and sent pyroclastic flows—avalanches of hot gas and debris—some 300 to 400 meters (980 to 1,200 feet) out to sea. The pyroclastic flows destroyed many buildings in the village of Harris north of Sourfrière Hills, and the Montserrat Volcano Observatory described the dome collapse as the most severe incident since May 2006.

The Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Aqua satellite captured this true-color image on February 11, 2010, the same afternoon that the dome collapsed. An east-west volcanic plume completely obscures the island of Montserrat, casting a shadow toward the northeast. Two smaller, fainter plumes also extend from the island, one to the north and the other to the south. The northern plume lies in the shadow of the east-west plume and consequently must occur at a lower altitude. NASA image by Jeff Schmaltz, MODIS Rapid Response Team  at NASA GSFC. Caption by Michon Scott. Edited by FEWW.


View E across ash-covered Plymouth, the former capital city and major port of Montserrat, toward Soufriere Hills volcano.
Before the volcano became active in July 1995, about 5,000 people lived in Plymouth, located 4 km west of English’s Crater. During the first two years of the eruption, ash and noxious gas from explosions and pyroclastic flows frequently settled on Plymouth. On August 3, about 3 weeks after this image was taken, the first significant pyroclastic flow swept through the evacuated town. The flow triggered many fires and caused extensive damage to buildings and community facilities by direct impact and burial. Date: 12 July 1997. Credit: R.P. Hoblitt/ USGS

In Uncertain Future for Montserrat Island, Fire-Earth Moderators estimated that the island could become completely uninhabitable by 2013 or earlier

Fire Earth’s EarthModel forecasts the probability of Montserrat island becoming completely uninhabitable as follows:

Probability of Montserrat Becoming Uninhabitable in the Near Future

  • 2009 ≥ 50%
  • 2010 ≥ 56%
  • 2011 ≥ 60%
  • 2012 ≥ 70%
  • 2013 ≥ 80%

Montserrat Island Details:

  • Capital:
    • Plymouth (destroyed in 1997- see photo below)
    • Brades (de facto)
  • Location: Montserrat Island
  • Coordinates: (16.72 N, 62.18 W)
  • Height: 915 meters (3,010 feet)
  • Official languages:     English
  • Ethnic groups:     West African, Mulatto, British, Irish
  • Government:     British Overseas Territory
  • Area:   102 km²  (39 sq mi )

Related Links:


Posted in Montserrat, Soufrière Hills, volcanism, volcano | Tagged: , , , , , , | 3 Comments »

2010 Year of Super Volcanoes?

Posted by feww on January 30, 2010

Global Volcanism is on the rise!

2010 May Prove to Be Year One of Super Volcanic Activities

Fire-Earth Moderators believe the increase in global volcanism could  include renewed activities at some of the planet’s super volcanoes.

VolcanoWatch Weekly [28 January 2010]

VoW: Volcano Ash Threatens Ecuador’s Ambato City

19 – 26 January 2010 – SI /USGS Weekly Volcanic Activity Report

New activity/Unrest

Volcano News (Source: GVP)

MVO reported that during 15-22 January activity from Soufrière Hills consisted of cycles of vigorous ash venting, rockfalls, and pyroclastic flows. On 18 January, a small lava-dome collapse from the W side of the volcano generated a large pyroclastic flow that traveled 4 km and reached the sea.

IG reported that during 20-26 January explosions from Tungurahua were detected by the seismic network. Ashfall was noted almost daily in areas to the SW and sometimes to the W and NW. During 20-23 January lava fountains and explosions ejected incandescent blocks that fell onto and rolled down the flanks.

Ongoing Activity

Barren Island, Andaman Is;  Batu Tara, Komba Island (Indonesia); Chaitén, Southern Chile; Fuego, Guatemala; Gaua, Banks Islands (SW Pacific);  Karymsky, Eastern Kamchatka;  Kilauea, Hawaii (USA);  Kliuchevskoi, Central Kamchatka (Russia);  Llaima, Central Chile;  Sakura-jima, Kyushu;  Santa María, Guatemala;  Shiveluch, Central Kamchatka (Russia);  Suwanose-jima, Ryukyu Islands (Japan).

Related Links:

More Links:

FEWW Volcanic Activity Forecast

VolcanoWatch Weekly [ previous 4 entries ]

Posted in Chaiten, Global Volcanism, Soufrière Hills, Tungurahua, Volcano News | Tagged: , , , , , , , , , | 5 Comments »

Montserrat Soufrière Hills Resumes Activity

Posted by feww on December 29, 2009

Nature’s SO2 Pumps Turned On



Soufrière Hills volcano on the Caribbean island of Montserrat resumed activity. NASA images taken by MODIS on Terra and Aqua satellites at a 3-hour interval: 10:45 (top) and 13:45 (above) on December 28, 2009. Credit: NASA

Previous entry:

Previous Images:


21 December 2009


20 December 2009

Related Links:

More Images:

Posted in Brades, FEWW Volcanio Forecast, HUMAN EHANCED NATURAL DISASTERS, Soufrière Hills, volcanic activity | Tagged: , , , | 4 Comments »

VolcanoWatch Weekly [26 Oct 2009]

Posted by feww on October 26, 2009

FEWW Volcanic Forecast

On April 21, 2009 in Sumatra’s Mt Kerinci Erupts FEWW made the following forecast

FEWW Volcanic Forecast:

1. The Loyalty – New Hebrides  Arc Collision. Intense volcanic activity should be expected throughout 2009 and beyond along the New Hebrides arc, the Vanatu region (also to the north to include Solomon Island and Santa Cruz Island), possibly continued along the New Hebrides Trench (to include Matthew and Hunter Island). Volcanoes that are located in the above-described area include:

  • Savo (Solomon Island)
  • Tinakula (Santa Cruz Island – SW Pacific)
  • Suretamatai
  • Motlav
  • Gaua
  • Mere Lava
  • Aoba
  • Ambrym
  • Lopevi
  • Kuwae
  • North Vate
  • Traitor’s Head
  • Yasur
  • Eastern Gemini Seamount
  • Matthew Island
  • Hunter Island

2. Pacific Plate subduction beneath the Okhotsk Plate. Subduction of the Pacific Plate beneath the Okhotsk Plate continues to create Intense volcanism. Starting 2009, however, a much greaterthan the average number of volcanoes located on the Kuril Islands island arc, Kamchatka volcanic arc and Japan trench to the south may erupt with renewed intensity.

And the following on June 5, 2009, having first introduced Mt Kaba earlier on Weekly Volcano Watch: 16 April 2009

FEWW Volcanic Activity Forecast:

FEWW Moderators forecast  new volcanic activity/ unrest at 50 or more volcanoes throughout the rest of 2009.

List of the volcanoes to watch this year [and in 2010] includes:

Barcena (0.8), Socorro (0.8), Curacoa (0.99), Atitlán (0.65), Vesuvius (>0.6), Bazman (0.6), Mount Shasta (>0.5), Kaba (>0.5), Bandai (>0.5), Eastern Gemini Seamount or Mathew Island volcano (0.65), Fonualei (0.65), Mount Rainier (>0.5), Jan Mayen (>0.6), Thule (0.4), Sibayak (>0.5), Volcán Guallatiri (0.65), Taveuni (>0.4),  two or more volcanoes on the island of Hokkaido (0.65), E-san (0.7), Oshima-Oshima (0.7), Komaga-take (0.65)

SI / USGS Weekly Volcanic Activity Report for 14-20 October 2009 listed both  Kaba and Gaua Volcanoes as erupting:

On 13 October, Vanuatu Geohazards Observatory confirmed that Gaua’s Mount Garat was erupting based on fieldwork done by scientists during 3-7 October. Seismic records showed multiple explosions, and a gas flux measurement of 3,000 metric tons of sulfur dioxide was detected on 3 October. The Alert Level was raised to 2 (on a scale of 0-5).

And

On 20 October, CVGHM reported that seismic activity from Kaba increased in August and remained elevated in September and October. Inflation was also detected. When weather permitted, diffuse white plumes were seen rising 25-50 m above the crater rim and drifting E. Based on the deformation and increased seismicity, CVGHN raised the Alert Level to 2 (on a scale of 1-4).

SI /USGS Weekly Volcanic Activity Report
(14 October – 20 October 2009)

New activity/Unrest:

Ongoing Activity:

Related Links:

FEWW Volcanic Activity Forecast

Other Related Links:

Recent Posts on Chaitén:

Posted in Chaiten, Ebeko, Kizimen, Kliuchevskoi, Nevado del Huila, Piton de la Fournaise, Soufrière Hills | Tagged: , , , , , , , , , , , , , , , | 2 Comments »

Weekly Volcano Watch: 16 April 2009

Posted by feww on April 16, 2009

Volcanic Activity Report: 8 April – 14 April 2009

Source: Global Volcanism program (GVP) – SI/USGS Weekly Volcanic Activity Report

New activity/unrest:

VoW: Kaba

Country:  Indonesia
Region:  Sumatra
Volcano Type:  Stratovolcano
Last Known Eruption: 2000
Summit Elevation:  1,952 m (6,404 feet)
Latitude: 3.52°S (3°31’0″S)
Longitude: 102.62°E (102°37’0″E)

Data Source: GVP

Kaba3
Mt. Kaba. Image Source: Mountain. Image may be subject to copyright.


Kaba, a twin volcano with Mount Hitam, has an elongated summit crater complex dominated by three large historically active craters trending ENE from the summit to the upper NE flank. The SW-most crater of 1952-m-high Gunung Kaba, Kawah Lama, is the largest. Most historical eruptions have affected only the summit region of the volcano. They mostly originated from the central summit craters, although the upper-NE flank crater Kawah Vogelsang also produced explosions during the 19th and 20th centuries.
Photo by Setiadarma, 1989 (Volcanological Survey of Indonesia). Caption: GVP.

Ongoing Activity:

Posted in Dukono, Kaba, Kīlauea, Soufrière Hills, Sumatra | Tagged: , , , , | Leave a Comment »