General Volcanic Activity Thread!

[john pike]

An eruption occurred at Te Maari Craters, Tongariro at approximately 1:25 pm today (Wednesday, 21 November 2012). GNS Science volcanologists are monitoring the eruption and further information will be released as soon as it is available.

http://info.geonet.org.nz/pages/viewpage.action?pageId=3801145

[The PIT]

A bit of video here as well http://info.geonet.org.nz/display/volc/2012/11/21/Tongariro+Eruption+Footage

[john pike]

http://www.youtube.com/watch?feature=player_embedded&v=UvwTDgyiW3Q

[john pike]

Reventador volcano's activity continues at elevated levels with the possibility of larger explosive eruptions and pyroclastic flows, according to the latest report of the Instituto Geofisico. During the first months of 2012, the volcano started to produce lava flows and build up a new lava dome that has by now over-topped the Nov 2002 crater rim. Over the past months, there has been a steady in crease. Steam plumes above the crater were mostly less than 500 m tall in the first months, they started to be larger since 4 Nov, when heights of the plume at times reached 3 km height during moderate ash explosions. In parallel, seismic activity increased as well. From 16 Nov, seismicity increased again to higher energy levels and increased frequency of harmonic tremor pulses. This went along with the occurrence of emission columns containing ash that reached 4000 m above the summit and drifted mainly to the N and NW. Light ash falls occurred in areas located between the volcano and the town of Chaco. IG notes that a gradual change in activity from effusive (lava flows) to a more explosive style can be observed, with more frequent ash explosions that could affect populated areas at greater distances from the volcano. This is thought to be caused by an influx of new magma into the system and could lead to a further increase of explosions with more ash content. Additionally, explosions or gravitational collapse could destroy the lava dome and form dangerous pyroclastic flows, especially down the Marker and Reventador rivers and affect people and infrastructure located downstream in these areas.

http://hisz.rsoe.hu/alertmap/site/?pageid=event_desc&edis_id=VA-20121121-37262-ECU

these volcanoes are like buses

[john pike]

Volcanic Alert Bulletin TON-2012/30 - Tongariro Volcano

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22 November 2012, 11:45 am - Eruption update: activity decreased at Tongariro but risk remains high; Volcanic Alert Level remains at Level 2; Aviation Colour Code remains Orange

Activity at Tongariro has been at low level since yesterday’s eruption.

There remains a significant probability of sudden eruption within the next week.

After reviewing monitoring data, videos and images for yesterday's eruption at Tongariro, GNS Science confirms that the eruption lasted approx 5 minutes, with an ash column and plume being ejected 3-4 km above the Upper Te Maari crater.

An inspection flight will be made later today and GNS Science continues to closely monitor the situation.

http://info.geonet.org.nz/pages/viewpage.action?pageId=3801193

[john pike]

http://www.volcanodiscovery.com/etna-earthquakes.html

earthquake swarm at mount tena

worth keeping an eye on

[john pike]

http://earthquake-report.com/2012/11/26/volcano-activity-of-november-26-2012/

Volcano activity of November 26, 2012

[john pike]

Lava Enters Ocean from PuÊ»u ʻŌʻÅ

http://mauinow.com/2012/11/26/lava-enters-ocean-from-pu%CA%BBu-%CA%BBo%CA%BBo/

[john pike]

VONA/Kamchatkan and Northern Kuriles Volcanic Activity

http://www.avo.alaska.edu/activity/avoreport.php?view=kaminfo

4 volcanoes on orange alert at present time

[john pike]

An explosive volcanic eruption began in Russia’s Far Eastern Kamchatka Peninsula on Tuesday, the Kamchatka Volcanic Eruption Response Team (KVERT) said on Wednesday. The eruption at the 3,085-meter Plosky Tolbachik volcano was given code orange (number three on the four-tiered USGS Volcano Alert Level), meaning it “poses limited hazards.†“Explosive eruption of the volcano began on November 27. Ash explosions up to 32,800 ft (10 km) a.s.l. could occur at any time. Ongoing activity could affect international and low-flying aircraft,†the organization said on its website. Observers from neighboring villages saw ash explosions and lava flows at the site of the previous eruption. Scientists say the volcano is obscured by clouds at now, but lava intrusions towards the volcano’s summit caldera are also probable. An ash fall was reported in the nearby village of Krasny Yar. Plosky Tolbachik, located on the peninsula’s eastern coast, 343 km from the region’s capital of Petropavlovsk-Kamchatsky. The volcano erupted only 10 times since records began in 1740. The last eruption was in 1975-1976.

http://hisz.rsoe.hu/alertmap/site/?pageid=event_desc&edis_id=VE-20121128-37330-RUS

An intense volcanic activity was monitored by the CNMI Emergency Management Office and captured through satellite images from Nov. 24, 2012, to the present. The volcano has been emitting steam and gas since Friday, Nov. 24, 2012. The vog shows that it's heading south from Pagan volcano. A gas plume from Pagan has been observed in MODIS satellite images. Minor steam and gas plumes from Pagan have been seen as well. It is possible that the plume could be followed by an ash emission; the presence of a gas plume does not necessarily indicate that eruptive activity will occur soon. Pagan is not monitored with ground-based geophysical instrumentation and the only source of information is satellite observation and occasional reports from observers who visit the island. Also an intense earthquake was recorded at the EMO and National Earthquake Information Center yesterday at 5:34pm Saipan time. The preliminary magnitude is 5.3 on the Richter scale. It was centered some 45 km (27 miles) south of Pagan, Northern Mariana Islands and 276 km (171 miles) north of Saipan, Northern Mariana Islands. Base on all available data no tsunami is expected and there is no tsunami threat for the Marianas

http://hisz.rsoe.hu/alertmap/site/?pageid=event_desc&edis_id=VA-20121128-37334-MNP

[john pike]

Large eruptions at Sakurajima Volcano - Japan

http://www.youtube.com/watch?v=V1R3FkAongQ

[john pike]

Tolbachik Update. First photos of the eruption

http://www.volcano-news.com/view_news/23303/Tolbachik-Update-First-photos-of-the-eruption.html

[summer blizzard]

http://www.aapg.org/explorer/2011/10oct/volcano1011.cfm

http://www.acsys.it/volume/php/home.php?&id=9

Tick tock, approaching 70 years.

[john pike]

http://www.aapg.org/...volcano1011.cfm

http://www.acsys.it/.../home.php?&id=9

Tick tock, approaching 70 years.

the saying

let sleeping dogs lie comes to mind here

[john pike]

Lava flows from the slope of erupting volcano Plosky Tolbachik in Russia's Far Eastern Kamchatka Peninsula have destroyed two nearby scientific camps, a local branch of the Russian Academy of Sciences said on Friday. The 3,085-meter Plosky Tolbachik, which is part of a volcanic complex located 343 kilometers from the region's capital of Petropavlovsk-Kamchatsky, erupted on November 27 for the first time in 36 years. The two camps were located 10 kilometers from the volcano. The eruption has been already assigned a Red Code status as the volcano is throwing clouds of ash to the height of 3,000 meters with the potential for ash explosions up to 10 km. Residents of nearby villages have been advised not to leave their homes as massive ash falls in the area are filled with toxic sulfur fumes. The clouds of volcanic ash could also pose threat to air traffic because the tiny particles cause problems with aircraft engine turbines. The Plosky Tolbachik erupted 10 times since records began in 1740, with the most notable eruption in 1975, commonly known as The Great Tolbachik Fissure Eruption. Soviet scientists successfully predicted the eruption because it was preceded by a series of earthquakes. The 1975 eruption dramatically changed the local landscape and became an ecological disaster as the volume of lava and ashes emitted by the Plosky Tolbachik was the largest in recorded history of Kamchatka. There are more than 150 volcanoes on Kamchatka, 30 of them active.

http://hisz.rsoe.hu/alertmap/site/?pageid=event_update_read&edis_id=VE-20121128-37330-RUS&uid=13187

[john pike]

Streams of molten rock are gushing from a newly erupting volcano on the Kamchatka Peninsula of the Russian Far East. The Tolbachik Volcano sprung to life last week, issuing lava flows and blasting ash and steam high into the air. New lava erupted by the volcano covered parts of a landscape shaped by a dramatic 1975-1976 eruption. The new flows engulfed a series of buildings in two scientific research camps. The flanks of Tolbachik split on Nov. 27, giving rise to a line of spectacular lava fountains. From these fountains arose streams of yellow-hot rock that cooled enough to form a moving wall of partially molten lava. Images posted on the website of a Russia volcano observatory showed the fountaining lava, the fast-flowing lava streams and the steep wall of bulldozing lava. Some of the images showed the thick, slow-moving flows covering young forest in a snow-covered landscape. The flows reached at least 10 km from the vents that were the site of eruption, according to the Smithsonian website. The style of the Tolbachik eruption, known as a fissure eruption, resembled those of Iceland, East Africa, Sicily's Mount Etna, even Hawaii, rather than the more dramatic, dangerous blasts epitomized by Mount Saint Helens and Mount Pinatubo in the 20th century. Fissure eruptions typically yield basalt, a dark, heavy lava, rather than the lighter lava and ash characterizing volcanoes given to massive explosive eruptions. The 1975-76 eruption of Tolbachik also began as a fissure eruption, giving rise to the largest historical eruption of basalt anywhere in Kamchatka.

http://hisz.rsoe.hu/alertmap/site/?pageid=event_desc&edis_id=VE-20121207-37435-RUS

[john pike]

[john pike]

Volcano Alerts

The current status of White Island.

• Volcanic Alert Level:

  2

• Aviation Colour Code:

  ORANGE

Volcano Drums

Showing seismic activity over the last 24 hours.

• 

  White Island

  View Drums

  

  12 December 2012, 1:30 pm - Spiny lava dome – a new and unusual style of eruptive activity at White Island; Volcanic Alert is raised to Level 2; Aviation Colour Code changed to Orange

  http://info.geonet.org.nz/pages/viewpage.action?pageId=3801265

http://hisz.rsoe.hu/alertmap/site/?pageid=event_desc&edis_id=VA-20121212-37498-NZL

Edited December 13, 2012 by john pike

[The PIT]

I think it's some type of Alien crawling out of the crater and not a dome. Looks odd anybody remember the whale back at St Helens?

[john pike]

SAN FRANCISCO — Scientists have discovered one of the world's weirdest volcanoes on the seafloor near the tip of Baja, Mexico.

http://www.ouramazingplanet.com/3885-weird-volcano-found-baja.html

earthquakes recently

http://earthquake.usgs.gov/earthquakes/recenteqsww/Maps/10/240_30_eqs.php

[john pike]

Volcanic activity world-wide 14 December 2012: Batu Tara, Paluweh, Tobachik, Askja, Popocatépetl, Fuego, Tungurahua, Reventador, Sakurajima, Tongariro, Ruapehu, White Island

http://www.volcanodiscovery.com/view_news/24197/Volcanic-activity-world-wide-14-December-2012-Batu-Tara-Paluweh-Tobachik-Askja-Popocatepetl-Fuego-Tu.html

plus

Tungurahua volcano (Ecuador): sudden strong explosion

http://www.volcanodiscovery.com/view_news/24229/Tungurahua-volcano-Ecuador-sudden-strong-explosion.html

Edited December 15, 2012 by john pike

[john pike]

Ecuador declares volcano alert

http://www.theaustralian.com.au/news/breaking-news/ecuador-declares-volcano-alert/story-fn3dxix6-1226538227088

[john pike]

The Tungurahua volcano in central Ecuador spewed gas and ash Monday, prompting the government to issue an alert and the evacuation of villages near the volcano. The U.S. Embassy in Quito issued an emergency message to caution Americans about traveling near Tungurahua, which means "Throat of Fire" and is located 80 miles southeast of capital Quito. The message singled out the tourist town of Banos and areas where voluntary evacuations are under way in Cusua, Juive Grander and Chico. It stressed the need for travelers to have an evacuation plan if conditions become more dangerous. "Past eruptions have affected air travel in Ecuador," the message reads in part. "U.S. citizens planning to fly to, from, or within Ecuador should monitor news outlets and have a plan in the event of flight cancellations." Media reports say a series of explosions overnight were recorded at the volcano, which started showing signs of activity last week. Ecuador's Secretary of Risk Management on Monday raised the alert level to orange, the second-highest level. A similar embassy message was issued Aug. 21 when the volcano showed signs of seismic activity. Eruptions of Tungurahua closed airports in Guayaquil and Quito in 2010 and took at least seven lives and destroyed three villages in 2006, a media report says.

http://hisz.rsoe.hu/alertmap/site/?pageid=event_update_read&edis_id=VE-20121217-37537-ECU&uid=13258

[john pike]

update

Volcano monitors say Ecuador's Tungurahua volcano shot lava 1km above its crater overnight and blasted hot rock and gas nearly 3km down its flank. The regional director for the government's emergency agency is Lourdes Mayorga and she says officials have prepared shelters and are working to evacuate any people in danger. The country's National Geophysics Institute said the volcano blasted lava well above its crater overnight and sent out a plume of ash and gas about 1.5km high. The renewed eruption in central Ecuador began last week and plumes on Sunday rose as high as 5km above the 16,479-foot (5,023-metre) crater.

http://hisz.rsoe.hu/alertmap/site/?pageid=event_update_read&edis_id=VE-20121217-37537-ECU&uid=13260

[john pike]

There is a risk of volcanic eruption in Turkish province of Mugla close to ​​Marmaris, reported on Thursday. This was stated by scientists of Maltepe University. Some 12 scientists, carrying out research in the coastal Mediterranean area for several months found that there is a risk of an underwater volcano eruption as a result of numerous earthquakes in the area. A crater was also found at a depth of 25 metres under water. Turkey is located in a seismically active zone. The most powerful vibrations of the earth's crust in this country occurred in the Marmara Sea in 1999. The magnitude of the tremors was 7.4. About 18,000 people were killed in the earthquake.

http://hisz.rsoe.hu/alertmap/site/?pageid=event_desc&edis_id=UGE-20121220-37574-TUR