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Posts Tagged ‘Soufrière Hills’

How Many Volcanoes Firing?

Posted by feww on March 7, 2013

Global Volcanic Eruptions 2013: Tempo Rising?


Map of Volcanoes.
Background Map: University of Michigan. Designed and enhanced by Fire Earth Blog. Click image to enlarge.

Current Aviation Color Code: ORANGE

CLEVELAND VOLCANO (52°49’20” N 169°56’42” W; CAVW #1101-24-) – [Group A on the Global Map]
Wednesday, March 6, 2013 12:14 PM AKST (Wednesday, March 6, 2013 21:14 UTC)
Summit Elevation: 5676 ft (1,730 m)
Current Volcano Alert Level: WATCH
Source: AVO

1338849660_ak52
Cleveland viewed from an Alaska Airlines 737 en route to Adak, Alaska. [Carlisle Volcano, center of image. Mount Cleveland, lower right of image.]

Date: May 31, 2012 12:00 AM
Photographer/Creator: Read, Cyrus. Image courtesy of AVO/USGS.

1285607433_ak52
This GeoEye IKONOS image shows a faint plume issuing from Cleveland Volcano at 2:31 PM on September 14, 2010. Red in this image highlights areas of vegetation detected by the near-infrared channel
.

Date: September 14, 2010 10:31 PM UTC
Volcano(es): Cleveland
Photographer/Creator: Wessels, Rick
Image processed by AVO/USGS. Image copyright 2010 – GeoEye

KILAUEA VOLCANO (19°25’16” N 155°17’13” W; CAVW #1302-01-)
Wednesday, March 6, 2013 7:43 AM HST (Wednesday, March 6, 2013 17:43 UTC)
Summit Elevation 4091 ft (1,247 m)
Current Volcano Alert Level: WATCH
Current Aviation Color Code: ORANGE
Source: HVO

Kamchatka Volcanoes on ORANGE Alert [Group J on the Global Map]

  • PLOSKY TOLBACHIK VOLCANO (55.83 N, 160.39 E; CAVW #1000-24-)
    Elevation:  3,085 m (10119 ft )
  • SHEVELUCH VOLCANO (56.64 N, 161.32 E; CAVW #1000-27-)
    Elevation: 3, 283 m [the dome elevation: 2,500 m)
  • KIZIMEN VOLCANO (55.13 N, 160.32 E; CAVW #1000-23-)
    Elevation: 2,485 m (8151 ft)
  • KARYMSKY VOLCANO (54.05 N, 159.44 E; CAVW #1000-13-)
    Elevation 1,486 m (4874 ft)

Other Kamchatka Volcanoes on YELLOW Alert [Group J on the Global Map]

  • KLYUCHEVSKOY VOLCANO (56.06 N, 160.64 E; CAVW #1000-26-)
    Elevation:  4,750 m
  • BEZYMIANNY VOLCANO (55.97 N, 160.6 E; CAVW #1000-25-)
    Elevation: 2,882 m
  • GORELY VOLCANO (52.56 N, 158.03 E; CAVW #1000-07-)
    Elevation: 1,828 m

Volcanoes of the Kurile Islands

  • Snow (Chirpoi Is.)  – YELLOW
  • Ivan Grozny – YELLOW

Recent Activity/ Unrest at other volcanoes

Ongoing Activity

Volcano/Earthquake Links

Posted in Significant Event Imagery, significant events, significant geophysical disturbances, volcanic activity, volcanic eruption, volcanic event, volcanic hazard, volcanic unrest, volcano, volcano alert, volcano images, Volcano News | Tagged: , , , , , , , , , , , , , , , | Leave a Comment »

VolcanoWatch Weekly [22 July 2010]

Posted by feww on July 21, 2010

Plosky Tolbachik Volcano


The massive, flat-topped, 3,085-m Plosky Tolbachik Volcano (55°49’N, 160°24’E) last erupted in 1975-76. The cleaver-edged volcano to the left is Ostry Tolbachik. “The 1975-76 eruption from the summit and south-flank fissures was the largest historical basaltic eruption in Kamchatka.” Source:   KVERT. Image may be subject to copyright.

Kamchatka could experience major volcanic  eruptions 2010-2011

Holocene Volcanoes in Kamchatka

Map of Holocene Kamchatka volcanoes. Source KVERT

Summary of Weekly Volcanic Activity Report

[Source: SI/USGS]

New Activity/Unrest (14 July – 20 July 2010)

NOTE: Based on Fire-Earth Model, more volcanic activity/unrest may be expected in areas/groups shown in red.


Map of Volcanoes.
Background Map: University of Michigan. Designed and enhanced by Fire Earth Blog. Click image to enlarge.

Ongoing Activity:

For additional information, see source.

Related Links:

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FEWW Volcanic Activity Forecast

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VolcanoWatch Weekly [16 July 2010]

Posted by feww on July 16, 2010

Manam Volcano Puffs Out a Small Plume


Manam Volcano released a small plume on June 16, 2010, which was captured by ALI on NASA’s EO-1 satellite.  Source: NASA E/O.

The 1,807-m Manam, one of Papua New Guinea most active volcanoes, last erupted in 2009, is a  basaltic-andesitic stratovolcano forming a 10-km wide island, located about 13km off the coast of mainland PNG.

“Frequent historical eruptions, typically of mild-to-moderate scale, have been recorded at Manam since 1616. Occasional larger eruptions have produced pyroclastic flows and lava flows that reached flat-lying coastal areas and entered the sea, sometimes impacting populated areas.” —GVP.

Summary of Weekly Volcanic Activity Report

[Source: SI/USGS]

New Activity/Unrest (7 July – 13 July 2010)

NOTE: Based on Fire-Earth Model, more volcanic activity/unrest may be expected in areas/groups shown in red.

Map of Volcanoes. Background Map: University of Michigan. Designed and enhanced by Fire Earth Blog. Click image to enlarge.

Ongoing Activity:

For additional information, see source.

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FEWW Volcanic Activity Forecast

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Posted in volcanism, volcano, Volcano Hazard, Volcano News, Volcano Watch | Tagged: , , , , | Leave a Comment »

Massive Eruption at Soufriere Hills Volcano

Posted by feww on March 25, 2010

The Soufriere Hills volcano in Montserrat ejects a large plume of ash up to 12km into the air

Passengers on a 737 jet flying over the Caribbean had a close-up look at a massive volcanic eruption which ejected a plume of ash and smoke higher than the flight altitude. Early reports indicate that a partial collapse of the volcano’s lava dome may have caused the mushroom cloud.  (Image: Mary Jo Penkala/Solent). Image may be subject to copyright.

A massive eruption of Montserrat’s Soufrière Hills Volcano triggered by a collapse of Soufrière Hills’ summit lava dome  covered large portions of the island in debris on February 11, 2010. Pyroclastic flows raced down the northern flank of the volcano, leveling trees and destroying buildings in the village of Harris, already abandoned after Soufrière Hills activity in 1995. The Montserrat Volcano Observatory reported that some flows, about 15 meters (49 feet) thick, reached the sea at Trant’s Bay, extending the island’s coastline up to 650 meters (2,100 feet). These false-color satellite images show the southern half of Montserrat before and after the dome collapse. The top image was taken on February 21, 2010, 10 days after the event. The bottom image shows the same area on March 17, 2007. Red areas are vegetated, clouds are white, blue/black areas are ocean water, and gray areas are covered by flow deposits. Fresh deposits are lighter than older deposits. On February 21, the drainages leading down from Soufrière Hills, including the White River Valley, the Tar River Valley, and the Belham River Valley, were filled with fresh debris. Pyroclastic flows reached the sea through Aymers Ghaut on January 18, 2010, and flows entered the sea near Plymouth on February 5, 2010, Montserrat Volcano Observatory said.

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Note: Links to Montserrat Volcano Observatory have been removed because the site is used for commercial advertising and promotion of tourism.

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Posted in Soufriere Hills erupts, volcanism, volcano | Tagged: , , , , | 2 Comments »

More Activity at Soufriere Hills Volcano

Posted by feww on February 26, 2010

Soufriere Hills Hellbent on Blowing Up Montserrat Island

In Montserrat: What Next? Fire-Earth wrote that Montserrat island could become completely uninhabitable by 2013 or earlier.

“Based on the pattern of volcanic activity at Soufriere Hills volcano since 1995, evidence of increased volcanism globally and a number of other  factors, the FEWW EarthModel forecasts the probability of Montserrat island becoming completely uninhabitable by by 2013 was equal or greater than 80 percent.”

Meanwhile, the Montserrat Volcano Observatory on February 21 reported that “the drainages leading down from Soufrière Hills, including the White River Valley, the Tar River Valley, and the Belham River Valley, were filled with fresh debris,” NASA Earth observatory said. The pyroclastic flows entered the sea via Aymers Ghaut more than a month ago, and the flows reached the sea near Plymouth on February 5, 2010.

Image # 1 (reportedly acquired by NASA on Feb 21, 2010)

Image # 2 (reportedly acquired by NASA on March 17, 200y – used for comparison)
A massive eruption of Montserrat’s Soufrière Hills Volcano triggered by a collapse of Soufrière Hills’ summit lava dome  covered large portions of the island in debris on February 11, 2010. Pyroclastic flows raced down the northern flank of the volcano, leveling trees and destroying buildings in the village of Harris, already abandoned after Soufrière Hills activity in 1995. The Montserrat Volcano Observatory reported that some flows, about 15 meters (49 feet) thick, reached the sea at Trant’s Bay, extending the island’s coastline up to 650 meters (2,100 feet). These false-color satellite images show the southern half of Montserrat before and after the dome collapse. The top image was taken on February 21, 2010, 10 days after the event. The bottom image shows the same area on March 17, 2007. Red areas are vegetated, clouds are white, blue/black areas are ocean water, and gray areas are covered by flow deposits. Fresh deposits are lighter than older deposits. On February 21, the drainages leading down from Soufrière Hills, including the White River Valley, the Tar River Valley, and the Belham River Valley, were filled with fresh debris. Pyroclastic flows reached the sea through Aymers Ghaut on January 18, 2010, and flows entered the sea near Plymouth on February 5, 2010, Montserrat Volcano Observatory said.

Note: Links to Montserrat Volcano Observatory have been removed because the site is used for commercial advertising and promotion of tourism.

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Posted in Aymers Ghaut, Plymouth, volcanic activity, volcanism, volcano | Tagged: , , , , | 1 Comment »

VolcanoWatch Weekly [21 January 2010]

Posted by feww on January 21, 2010

New activity/Unrest

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

Volcano News (Source: GVP)

MVO reported that during 8-15 January activity from the Soufrière Hills lava dome increased significantly. One explosion on 8 January and two on 10 January generated ash plumes that rose to altitudes of 5.5-7.6 km a.s.l. Ash fell in occupied areas to the NW. On 18 January, a partial lava-dome collapse generated a pyroclastic flow. Smoke from burning houses in Kinsale was visible after the event.

The IG reported that during 13-14 January explosions from Tungurahua ejected incandescent material 1 km above and 1.5 km away from the crater, onto the flanks. (SOURCE: GVP)

Ongoing Activity

Arenal, Costa Rica;  Chaitén, Southern Chile; Gaua, Banks Islands (SW Pacific); Karymsky, Eastern Kamchatka; Kilauea, Hawaii (USA);  Kliuchevskoi, Central Kamchatka (Russia); Planchón-Peteroa, Central Chile-Argentina border; Rabaul, New Britain; Sakura-jima, Kyushu; Sangay, Ecuador; Shiveluch, Central Kamchatka (Russia);  Suwanose-jima, Ryukyu Islands (Japan)

The Weekly Volcanic Activity Report is a cooperative project between the Smithsonian’s Global Volcanism Program and the US Geological Survey’s Volcano Hazards Program.

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VolcanoWatch Weekly [1 January 2010]

Posted by feww on January 1, 2010

VoW: Redoubt (Again!)


View of Redoubt faintly steaming (plume drifts south [to the left in the photo] from the summit) on December 31, 2009, as seen from near Homer, Alaska. Photograph courtesy of Dennis Anderson, Night Trax Photography. Picture Date: December 31, 2009 12:55:00 AST.

ALASKA VOLCANO OBSERVATORY CURRENT STATUS REPORT
Thursday, December 31, 2009 12:40 PM (Thursday, December 31, 2009 21:40 UTC)

REDOUBT VOLCANO (CAVW #1103-03-)
60°29’7″ N 152°44’38” W, Summit Elevation 10197 ft (3108 m)
Current Volcano Alert Level: ADVISORY
Current Aviation Color Code: YELLOW

The rate of shallow, small earthquakes at Redoubt Volcano decreased markedly yesterday and remains low. The Aviation Color Code remains YELLOW and the Volcano Alert Level remains ADVISORY.

SI / USGS Weekly Volcanic Activity Report
(23December – 29 December 2009)

New Activity/Unrest

Latest on Mayon Volcano

Volcano News (Source: GVP)

OVSICORI-UNA reported that on 25 December a phreatic eruption from Laguna Caliente, a summit lake of Poás, was seen by visitors standing at a viewpoint to the S of the crater. Lake water mixed with sediment and blocks was ejected 550-600 m above Laguna Caliente.

MVO reported that during 11-19 December activity from the Soufrière Hills lava dome continued at a high level. Frequent pyroclastic flows were noted on the northern flank. Ashfall also occurred on many other Caribbean islands, as far as Puerto Rico (400 km ENE), and disrupted commercial flights. (Source: GVP)

Ongoing Activity

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Posted in Karymsky, San Cristóbal, volcanism, volcano, Volcano Watch | Tagged: , , , , | 1 Comment »

VolcanoWatch Weekly [17 Dec 2009]

Posted by feww on December 17, 2009

VoW: Mayon

We would have liked to reprint a striking image of Mayon Volcano taken from space, and all that NASA had made available as of posting was this truly disappointing “turn-of-the-satellite” image:


Mt Mayon. Image Source: NASA. Click image to enlarge.

Click here for larger, but not necessarily any less disappointing image.

For recent information on Mayon click links below:

SI / USGS Weekly Volcanic Activity Report
(2 December – 8 December 2009)

New activity/Unrest:

Volcano News (Source: GVP)

  • According to news articles, PHIVOLCS reported that on 14 December incandescence emanated from the lava dome in Mayon’s summit crater and incandescent material traveled as far as 3 km down the S and SE flanks. At least five minor explosions were detected by the seismic network.
  • According to a news article, INETER reported that an explosion of ash and gas from Concepción on 11 December produced a plume that rose 150 m above the crater.
  • OVPDLF reported that on 14 December an eruption from Piton de la Fournaise was preceded by a seismic crisis and summit deformation. Sub-parallel fissures along the rim of Dolomieu crater fed lava flows on the S slope.

Ongoing Activity

Chaitén, Southern Chile;  Dukono, Halmahera;  Fuego, Guatemala; Karymsky, Eastern Kamchatka;  Kilauea, Hawaii; Kliuchevskoi, Central Kamchatka (Russia);  Manam, Northeast of New Guinea (SW Pacific);  Nevado del Huila, Colombia; Pacaya, Guatemala;  Rabaul, New Britain; Sakura-jima, Kyushu;  Santa María, Guatemala; Shiveluch, Central Kamchatka (Russia);  Suwanose-jima, Ryukyu Islands (Japan).

Related Links:

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FEWW Volcanic Activity Forecast

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Recent Posts on Chaitén:

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VolcanoWatch Weekly [6 Nov 2009]

Posted by feww on November 6, 2009

VOW: Kilauea

20091104_3687_mrp_L
Click image to enlarge.

20091104_3721_mrp_L
[Top] Activity at the west Waikupanaha ocean entry, where lava reached the ocean this past weekend, continues. The entry spans about 200 yards, with many small lava streams entering the water. [Above] On the east margin of the entry, lobes were advancing over a small black sand beach.  USGS/ HVO [Dated 4 Nov 2009] Click image to enlarge.

More images:

HAWAIIAN VOLCANO OBSERVATORY DAILY UPDATE
Thursday, November 5, 2009 7:48 AM HST (Thursday, November 5, 2009 17:48 UTC)

KILAUEA VOLCANO (CAVW #1302-01-)
19°25’16” N 155°17’13” W, Summit Elevation 4091 ft (1247 m)
Current Aviation Color Code: ORANGE
Aviation Color Code: ORANGE

Activity Summary for past 24 hours:
Growth and partial collapses of the Halema`uma`u Overlook vent cavity floor continued periodically obscuring and revealing the circulating lava pond surface. Sulfur dioxide emission rates from the Halema`uma`u and east rift zone vents remain elevated. Lava flows are active on the coastal plain. Lava is also flowing through tubes to the coast and entering the ocean at two locations west of Kalapana.

Past 24 hours at Kilauea summit:
The Overlook vent webcam images again showed fluctuating glow and spattering from a single elongated hole deep within the Halema`uma`u vent cavity; the rim of this hole was built progressively inward by spatter making the hole smaller until two more partial collapses occurred early this morning again revealing the circulating and spattering lava pond below. Glow from the vent was visible from Jaggar Museum overnight. This morning, a near white plume is moving southwestward and low over the Ka`u Desert. The most recent sulfur dioxide emission rate measurement was 500 tonnes/day on November 3, which is elevated above the 2003-2007 average of 140 tonnes/day. Small amounts of ash-sized tephra continued to be dropped from the plume near the vent.

Past 24 hours at the middle east rift zone vents and flow field: Magma continued to degas through Pu`u `O`o crater before erupting from the TEB vent, located 2 km to the east. The most recent sulfur dioxide emission rate measurement was 1,400 tonnes/day on November 4, which is close to the 2003-2007 average of 1,700 tonnes/day More …

Kilauea Spews More Lava

kilauea_ali_2009306
The rift zone on the eastern slopes of Hawaii’s Kilauea Volcano has been erupting since January 1983, the longest eruption in recorded history. Pu‘u ‘O‘o and the Thanksgiving Eve Breakout vent—two centers of volcanic activity—emit steam and other gases in this natural-color satellite image. Lava currently reaches the surface at the Thanksgiving Eve Breakout vent and flows southeast (towards the lower right) through a lave tube to the ocean. Small plumes of gas reveal the path of the lava. In general, the youngest lava flows are black, and older, weathered, flows are gray or brown. Surviving vegetation is bright green.
The Advanced Land Imager (ALI) on NASA’s EO-1 satellite acquired this image on November 2, 2009. NASA Earth Observatory image by Robert Simmon, using EO-1 ALI data provided by the NASA EO-1 team. Caption by Robert Simmon. Click image to enlarge.

SI / USGS Weekly Volcanic Activity Report
(28October – 3 November 2009)

New activity/Unrest:

Ebeko, Paramushir Island | Galeras, Colombia | Karangetang [Api Siau], Siau I | Manam, Northeast of New Guinea (SW Pacific) | Nevado del Huila, Colombia | Soufrière Hills, Montserrat

GVP Volcano News:

INGEOMINAS reported that on 28 October a pulse of tremor from Nevado del Huila was followed by an ash plume that rose to an altitude of 8.3 km (27,200 ft) a.s.l. On 3 November, residents of Mosoco (20 km SSW) saw collapses from the W side of the dome generate small pyroclastic flows and incandescence at night.

MVO reported that during 23-30 October seismic activity from the Soufrière Hills lava dome was at a slightly lower level that the previous week. Numerous pyroclastic flows occurred in most of the major drainage valleys and rockfalls were concentrated in the S. On 29 October, a 40-m-high spine was seen protruding from the summit. —GVP

Ongoing Activity:

Barren Island, Andaman Is | Chaitén, Southern Chile | Dukono, Halmahera | Karymsky, Eastern Kamchatka | Kilauea, Hawaii (USA) | Kliuchevskoi, Central Kamchatka (Russia) | Krakatau, Indonesia | Popocatépetl, México | Rabaul, New Britain | Sakura-jima, Kyushu | Shiveluch, Central Kamchatka (Russia) | Suwanose-jima, Ryukyu Islands (Japan)

Related Links:

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FEWW Volcanic Activity Forecast

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Recent Posts on Chaitén:

Posted in FEWW Volcanic Forecast, volcanic activity, volcanism, Volcano Watch, volcanoes, VolcanoWatch Weekly | Tagged: , , , , , , , , , , , , , | Leave a Comment »

VolcanoWatch Weekly [28 Oct 2009]

Posted by feww on October 29, 2009

VOW: Nevado del Huila

Eight of Colombia’s 15 volcanoes have erupted in the last 100 years, and three of them since 1990: Galeras, Nevado del Huila, and Nevado del Ruiz.

nevado del huila
Nevado del Huila emitting ash [October 17, 2009.] As of posting more than a 1,000 tremors have been detected since Huila became restless on October 16, 2009. Photo: INGEOMINAS/Colombian Govt.

Nevado del Huila Emits Ash

huila_tmo_2009301
Nevado del Huila became active on October 16, 2009. Tremors indicating movement of fluid within the volcano, surface emissions of gas and ash, and other volcanic activity have been reported recently by the Colombian Institute of Geology and Minerals (INGEOMINAS). Towering emissions of volcanic ash have also been reported almost daily.    A column of ash reached flight level 11,000 meters (36,000 feet) on October 28, 2009. This natural-color image from the Moderate-resolution Imaging Spectroradiometer (MODIS) aboard NASA’s Terra satellite captured the plume at 10:15 a.m. Thick gray ash is visible over the summit of Nevado del Huila, with a diffuse plume stretching northwest (towards the upper left corner of the image).     According to the newspaper El Liberal, ashfall in the surrounding areas was a nuisance, but not yet a serious risk to health. INGEOMINAS assigned Huila an alert level of Orange, meaning an eruption is probable within days or weeks. NASA image by Jeff Schmaltz, MODIS Rapid Response, Goddard Space Flight Center. Caption by Robert Simmon.

Volcano of the Week Details

Name: Nevado del Huila
Country: Colombia
Region Name: Colombian Andes
Volcano Type: Stratovolcano
Last Known Eruption: 2009
Summit Elevation: 5,364 m (17,598 feet)
Latitude: 2.93°N
Longitude: 76.03°W
Source: GVP


Huila, the highest active volcano in Colombia, is an elongated, N-S-trending snow-capped stratovolcano, constructed inside an old caldera. The 5364-m-high volcano is seen here from the SW, with the northern peak (La Cuesta) on the left and the lower southern peak on the right flanking Pico Central, the volcano’s high point. Two persistent steam columns rise from the southern peak.  Photo by Juan Carlos Diago, 1995 (courtesy of Bernardo Pulgarín, INGEOMINAS, Colombia). Caption: GVP


An explosive eruption ruptured the summit of Nevado del Ruiz on November 13, 1985, spewing about 20 million cubic meters of volcanic ash and rocks into the air. Forty-meter thick lahars traveling at velocities of up to 50 kilometers per hour destroyed the town of Armero 74 km away from the explosion crater, killing more than 23,000 people. [Source: USGS]

SI /USGS Weekly Volcanic Activity Report
(21 October – 27 October 2009)

New activity/Unrest:

GVP Volcano News:

PHIVOLCS reported that on 28 October a minor ash explosion from Mayon produced a brownish ash plume that rose 600 m above the crater and drifted NE.

Based on web camera views, INGEOMINAS reported that on 21 October continuous gas emissions rose from Nevado del Huila and pulses of ash emissions produced plumes that drifted E. Observations during an overflight on 23 October revealed that gas-and-ash emissions originated from two locations.

Ongoing Activity:

Related Links:

FEWW Volcanic Activity Forecast

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Recent Posts on Chaitén:

Posted in Chaiten volcano, FEWW Volcanic Forecast, volcanic activity, volcanism, volcanoes | Tagged: , , , , , , | 1 Comment »

VolcanoWatch Weekly [7 October 2009]

Posted by feww on October 9, 2009

VOW:  Ambrym

Destructive acid rain caused by eruption

According to press reports, an eruption from Benbow Crater occurred on 10 February [1979.]  Gases from the eruption caused acid rainfall on the SW portion of Ambrym Island, destroying most vegetation within 24 hours, contaminating water supplies, and burning some inhabitants. Jean-Luc Saos, Director of Mineral Resources for the New Hebrides government, reported a high concentration of HCl and sulfur compounds in the volcanic gases. Although heavy ashfalls have occurred in the area in the past, this is the first report of acid rains. More …


View of the Marum cone at Ambrym looking SW, 7 June 2007. Incandescence from the active lava lakes can be seen reflected in the clouds (left). Courtesy of Steven Clegg.


Lava lake inside Mbwelesu crater within Marum cone at Ambrym, 7 June 2007. Courtesy of Steven Clegg.

vanuatu_amo_2009279
A hazy layer of vog—volcanic fog—overlies Malekula and a few other islands of the Vanuatu archipelago in this natural-color satellite image. The source of the vog is Ambrym, a volcano in the southeast (lower right) corner of this scene. The haze extends over the Coral Sea several hundred kilometers to the northwest. Ambrym emits sulfur dioxide—the gas responsible for the formation of vog— intermittently. (Kilauea Volcano has recently affected the residents of Hawaii with similar vog emissions.)  The Moderate Resolution Imaging Spectroradiometer (MODIS) aboard NASA’s Aqua satellite acquired this natural-color image on October 6, 2009. [Large earthquake measuring up to 8.2 Mw struck Vanuatu region  on October 7, 2009 at 22:03 UTC. FEWW]
NASA image by Jeff Schmaltz, MODIS Rapid Response, NASA Goddard Space Flight Center. The Rapid Response Team provides twice-daily images of this region. Caption by Robert Simmon.

Vanuatu.A2004278.2300.250m
Ash plume from Ambrym Volcano, Vanuatu October 4, 2004, 23:00 UTC.  Source: NASA/MODIS Rapid Response System.


View into the Mbwelesu crater on the Marum cone at Ambrym, captured 7 September 2008. Lava can be seen through two gaps in the crusted-over lava lake (enlarged insets). Courtesy of Arnold Binas.


Ambrym, a large basaltic volcano with a 12-km-wide caldera, is one of the most active volcanoes of the New Hebrides arc. A thick, almost exclusively pyroclastic sequence, initially dacitic, then basaltic, overlies lava flows of a pre-caldera shield volcano. The caldera was formed during a major plinian eruption with dacitic pyroclastic flows about 1900 years ago. Post-caldera eruptions, primarily from Marum and Benbow cones, have partially filled the caldera floor and produced lava flows that ponded on the caldera floor or overflowed through gaps in the caldera rim. Post-caldera eruptions have also formed a series of scoria cones and maars along a fissure system oriented ENE-WSW. Eruptions have apparently occurred almost yearly during historical time from cones within the caldera or from flank vents. However, from 1850 to 1950, reporting was mostly limited to extra-caldera eruptions that would have affected local populations. Caption: GVP

Ambtym
Country: Vanuatu
Subregion Name: Vanuatu
Volcano Number: 0507-04=
Volcano Type: Pyroclastic shield
Volcano Status: Historical
Last Known Eruption: 2009
Summit Elevation: 1334 m 4,377 feet
Latitude: 16.25°S 16°15’0″S
Longitude: 168.12°E 168°7’0″E

SI /USGS Weekly Volcanic Activity Report
(30 September – 6 October 2009)

New activity/Unrest:

News From GVP:

On 29 September, people living in Chaitén town, 10 km SW of Chaitén’s Domo Nuevo 1 (Phase I) and Domo Nuevo 2 (Phase II) lava-dome complex, noticed that the eruption column was larger. Scientists conducted an overflight and saw a third lava dome (Phase III) in the SW area of the complex, which had filled up a depression left by a collapse on 19 February.

According to news articles from 2 October, increased seismicity at Gaua was detected during the previous two weeks. Villagers living nearby reported ashfall and sulfur odors.

An explosive eruption from Galeras on 30 September prompted INGEOMINAS to raise the Alert Level. An ash plume rose to an approximate altitude of 12.3 km (40,400 ft) a.s.l. and drifted E, then N. —GVP

Ongoing Activity:

Related Links:

FEWW Volcanic Activity Forecast

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Recent Posts on Chaitén:

Posted in California volcanoes, ecuador, FEWW Volcanic Activity Forecast, Hawaii, island of Java, Kīlauea, Langila, Mexico, New Britain, Popocatépetl, Rabaul, Reventador, Sangay, volcanic hazard, volcanism, volcano services, volcanoes | Tagged: , , , , , , , , , , , , , , , , , , | 1 Comment »

Week 35 Volcano Watch

Posted by feww on September 6, 2008

27 August-2 September 2008

New Activity/Unrest:


Deposits from the pyroclastic flow on 25 August 2008. Inset shows image from thermal camera. Source: Montserrat Volcano Observatory’s photostream. Image may be subject to copyright.

Ongoing Activity:

See the GVP Home Page for news of the latest significant activity.

The Weekly Volcanic Activity Report is a cooperative project between the Smithsonian’s Global Volcanism Program and the US Geological Survey’s Volcano Hazards Program.

Posted in chile, colombia, environment, food, Fox Islands, health, Llaima, Luzon, Nevado del Huila, Okmok, Taal | Tagged: , , , , , , , | Leave a Comment »

Week 33 Volcano Watch

Posted by feww on August 21, 2008

13 August-19 August 2008

New Activity/Unrest:

Piton de la Fournaise. The massive Piton de la Fournaise on the island of Réunion is one of the world’s most active volcanoes. It is seen here in 1977 with a fresh black lava flow descending the outer NE flank of the shield volcano to the sea. An unvegetated summit lava shield (upper left) was constructed within an 8-km-wide caldera that is breached to the sea. Its sloping northern rim is marked by the diagonal vegetation line at the left. More than 150 eruptions have occurred since the 17th century, mostly from vents within the caldera. (Caption:Global Volcanism Program ). Copyrighted photo by Katia and Maurice Krafft, 1977 (published in SEAN Bulletin, 1977).

Ongoing Activity:

The Weekly Volcanic Activity Report is a cooperative project between the Smithsonian’s Global Volcanism Program and the US Geological Survey’s Volcano Hazards Program. This page is updated on Wednesdays, please see the GVP Home Page for news of the latest significant activity.

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Week 32 Volcano Watch

Posted by feww on August 13, 2008

6 August-12 August 2008

New Activity/Unrest:

Plume from Kasatochi Volcano, Aleutian Islands
Satellite: Aqua
Date Acquired: Aug 9, 2008

Credit: Jeff Schmaltz
MODIS Land Rapid Response Team,
NASA GSFC

Kasatochi Volcano is one of many mostly submarine volcanoes whose summit emerges from the waters of the Bering Sea off the southwest coast of Alaska. After earthquakes and other seismic activities starting on or around August 7, Kasatochi began erupting large plumes of ash and gases. On August 8, 2008, skies were cloudy when the MODIS on NASA’s Terra satellite passed overhead and captured this natural-color image. The bright clouds provided good contrast for the volcanic plume, which is dark brown.

The ash plume spread southeastward from the volcano over the Pacific Ocean. Weather patterns caused the plume to diffuse as it swirled counterclockwise. Beneath the plume, which is dark brown, a few breaks in the clouds reveal that the normally deep blue waters of the Pacific are turquoise-colored. This brightness may be the result of ash or rocks debris settling on the water’s surface. According to an article in an Anchorage newspaper, the ash cloud forced cancellation of scores of flights into and out of Alaska, stranding as many as 6,000 passengers. (Caption NASA)

Ongoing Activity:

The Weekly Volcanic Activity Report is a cooperative project between the Smithsonian’s Global Volcanism Program and the US Geological Survey’s Volcano Hazards Program. This page is updated on Wednesdays, please see the GVP Home Page for news of the latest significant activity.

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Volcanic Activity News

Posted by feww on August 2, 2008

For New Volcanic Activity/Unrest See

SI / USGS Weekly Volcanic Activity Report

23 July-29 July 2008

New Activity/Unrest:

Anatahan, Mariana Islands (Central Pacific) | Chaitén, Southern Chile | Chikurachki, Paramushir Island | Cleveland, Chuginadak Island | Dukono, Halmahera | Karymsky, Eastern Kamchatka | Llaima, Central Chile | Manam, Northeast of New Guinea (SW Pacific) | Okmok, Fox Islands | Reventador, Ecuador | Soufrière Hills, Montserrat


“Garden of the Fugitives.” Plaster casts of some of the victims of Mount Vesuvius eruption [AD79] are still in the ruins of Pompeii. A few hours after Mount Vesuvius exploded Pompeii and its residents were buried under 3 meters of volcanic ash. Photo copyright: Aschwin Prein. See FEWW Fair Use Notice!

Ongoing Activity:

Batu Tara, Komba Island (Indonesia) | Bezymianny, Central Kamchatka (Russia) | Kilauea, Hawaii (USA) | Krakatau, Indonesia | Rabaul, New Britain | Sakura-jima, Kyushu | Santa María, Guatemala | Semeru, Eastern Java (Indonesia) | Shiveluch, Central Kamchatka (Russia) | Suwanose-jima, Ryukyu Islands (Japan) | Tungurahua, Ecuador | Ubinas, Perú


The skeletal remains of a young woman killed by the eruption of Mount Vesuvius in A.D. 79. The skeleton, unearthed from the ruins of Herculaneum in 1982, was named the “Ring Lady” because of the emerald and ruby rings found on the woman’s left hand. Two gold bracelets and gold earrings were also found by the woman’s side. (Source: Wikipedia)

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