Volcano watch

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Japan: A new island appears in the Ogasawara Islands - November 2013

Active volcanoes (Sep 28, 2012)

Source

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"Of course all volcanoes will explode, as this is going to be a very severe pole shift. What about the months and years preceding the pole shift? It is no secret that Mammoth Lake and the caldera of Yellowstone are warming up, and the populace has been prepared for these occurrences by the movie Volcano where there, in the middle of LA, lava is bubbling up. In fact, there is a fault line running from the approximate San Diego/LA area, up into the Sierras, and this is liable to rupture rather violently during one of the quakes that precedes the pole shift by some months. Volcanic eruptions from that area in the Sierras can be expected. Will Mount St. Helen erupt? All volcanoes that have been active within the memory of man will begin spewing and burping and oozing, and many that were not expected to become active will reactive. "   ZetaTalk - Feb 15, 2000

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SEP 9 :

More harmonic tremors in Katla volcano

It seems that Katla volcano is not as quiet it seems to be. For the moment the harmonic tremor seems to be small and only properly observable on one SIL station due to how weak it is at current time. So far two harmonic spikes have happened. This is most likely a hydrothermal system going crazy under the glacier close to Lágu Hvolar SIL station, rather then magma on the move (or at least that is what I think).

Harmonic tremor at Lágu Hvolar SIL station. The harmonic tremor can be seen at the end of this tremor plot. Copyright of this picture belongs to Iceland Met Office.

There has not been a lot of earthquake activity in Katla volcano during the last 24 hours or so. But that might not mean anything, as eruption can and have started without any warning at all (example: Grímsvötn volcano May 2011). So for now, it is more wait and see and more waiting it seems.

 

 

 

http://www.jonfr.com/volcano/?p=1467

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SEP 8 :

Iceland, Katla volcano - Iceland’s Civil Protection Department has increased its monitoring of Katla, following increased seismic activity in the surrounding area

 

Iceland’s Civil Protection Department has increased its monitoring of the North Atlantic island’s largest volcano, Katla, following increased seismic activity in the surrounding area, according to a statement on its Web Site. “We can’t rule out that” an eruption is under way, Magnus Tumi Gudmundsson, a geologist at the Institute of Earth Science with the University of Iceland, told national broadcaster RUV. “It’s possible that magma is gathering underneath the mountain.” Gudmundsson said it was too early to say exactly what was happening at the volcano. Three earthquakes were measured in the Katla area after 7 p.m. local time, according to Iceland’s Meteorological Office. The largest quake was about 2.0 on the Richter scale, the Met Office said. Katla had two small eruptions in 1955 and 1999, neither of which managed to break the ice covering its 10 kilometer-wide (6 mile) caldera. The last major eruption in Katla began in 1918, when ash explosions from the crater didn’t subside for more than five weeks. Ash from Iceland’s Grimsvotn volcano forced flight cancelations in Scotland, northern England and Germany in May. An eruption of the Eyjafjallajokull volcano in April last year caused the cancellation of more than 100,000 flights on concern glass-like particles formed from lava might melt in aircraft engines and clog turbines. Historically, Eyjafjallajokull has been known to erupt one to two years prior to Katla.

http://hisz.rsoe.hu/alertmap/site/?pageid=event_update_read&edi...

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SEP 7 :

Iceland, Katla volcano - Magma on the move in Katla volcano / Increased geothermal heat and seismic activity might indicate an upcoming eruption

While the source of the harmonic tremor yesterday in Katla volcano is not immanently clear. It is has been concluded that magma is on the move inside Katla volcano. It has been suggested that the harmonic tremor yesterday in Katla volcano is a mixture of both hydrothermal activity and water flows under the glacier. But hydrothermal activity has increased in Katla volcano since July and seems to be continuing on that path for now.

The earthquake activity in Katla volcano has been growing since July, when a sharp harmonic tremor spike did take place and was followed by a glacier flood that did destroy the Múlakvísl river bridge. But that flood did peak at ~5 meter high.

Currently the activity is quiet in Katla volcano. But that might be because the earthquakes are not being detected by the bad weather that is currently in this area (and all over Iceland for the fact).
Here is a overview of the change in activity since Week 34.


Update 1: According to news the local emergency units and police have started to review the evacuation plans and emergency plans in the case of a eruption in Katla volcano.

News about that can be read here, if you risk Google Translate.
Fara yfir áætlanir um viðbrögð (mbl.is, Icelandic, 7. Sept, 2011)

RSOE - Increased geothermal heat and seismic activity below Mýrdalsjökull glacier in south Iceland, which covers the volcano Katla, might indicate an upcoming eruption and scientists are closely monitoring the volcano. However, it is not certain that an eruption is imminent. Mýrdalsjökull and Mt. Maelifell. Photo by Páll Stefánsson. Geophysicist Magnús Tumi Gudmundsson went on an observation flight over Mýrdalsjökull yesterday. “There is always uncertainty regarding Katla and therefore it was considered necessary to fly across the glacier to shed a light on what is going on,” he told Fréttabladid. He noted that calderas and cracks in the glacier clearly showed increased geothermal heat and regular series of minor earthquakes also indicate that the volcano has been expanding recently. Gudmundsson pointed out that there is only one definite indication that an eruption in Katla is coming up. “All sources of Katla eruptions in the past 500 years mention large earthquakes that can clearly be found in Mýrdalur [by Vík] a few hours before the eruption begins. That is in fact the only absolute warning.” There was some seismic activity below Mýrdalsjökull yesterday but this morning it seemed to have subsided. The glacial river Múlakvísl also flooded but the water level peaked yesterday evening and the water flow has since decreased, ruv.is reports. The calderas which caused the flood in Múlakvísl in July are unchanged but Gudmundsson said there is a new depression in the icecap to the south of them which indicate increased geothermal heat. He added there is no clear reason for yesterday’s earthquakes.....

http://hisz.rsoe.hu/alertmap/site/?pageid=event_update_read&edi...

http://www.jonfr.com/volcano/?p=1457

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SEP 7 :

Alaska, Cleveland volcano - Remote Alaska volcano might erupt soon, experts say

Alaska's Cleveland Volcano could soon be leaking from its flanks if the lava inside continues to build up, officials at the Alaska Volcano Observatory reported.

The observatory reported that the volcano's lava dome was 262 feet in diameter on August 30 and has now expanded to 394 feet.

"The presence of the lava dome increases the possibility of an explosive eruption, but does not necessarily indicate that one will occur," the observatory said. "Short-lived explosions could produce an ash cloud that exceeds 20,000 ft above sea level."

The observatory said it did not expect air travel problems if the volcano erupted.

Because "the small lava dome in the summit crater has resumed growth and now fills the floor of the crater," the observatory is raising its alert level.

The remote volcano is in the Aleutian Islands, about 940 miles southwest of Anchorage.

Because the volcano is in such a remote area, the observatory webcam feed has experienced technical difficulties.

http://news.blogs.cnn.com/2011/09/07/remote-alaskan-volcano-might-e...

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SEP 7 :

Hawaii, Kilauea volcano - The summit lava lake rose slightly overnight at Pu`u `O`o crater

 

Eruptive activity persisted within Pu`u `O`o crater and at Kilauea’s summit amidst continued inflation. The summit lava lake rose slightly overnight. In the middle east rift zone, lava continued to issue from sources at the east and west edges of the Pu`u `O`o crater. Seismic tremor levels remained low. Gas emissions remained elevated from summit and rift zone vents. All erupted lava is confined to craters within Hawai`i Volcanoes National Park and poses no direct hazard to any developed areas.

The summit … (Source)

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SEP 6 :

Mount Duokono North Halmahera erupted belching volcanic ash as high as 800 meters

Duokono mountain in North Halmahera, North Maluku, on Tuesday (6 / 9), erupted belching volcanic ash as high as 800 meters. Residents were asked to evacuate at least about two kilometers from the foot of the mountain.

Head Mount Observation Post Duokono Iwan Ahmad said, before the eruption, volcanic earthquakes occurred dozens of times every day. Nowadays the mountain is located in the District was issued a fungus Galela volcanic dust high enough so that it can be seen from Ternate. The mountain is in standby status.

Iwan adding a mountain as high as 2,300 meters above sea level last erupted in 2008. (ADI / Ulf)

VIDEO : http://tv.liputan6.com/main/read/6/1063350

http://berita.liputan6.com/read/352171/gunung-duokono-halmahera-uta...

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SEP 6 :

Indonesia’s Mount Lokon erupts four times on Tuesday

MANADO, SULAWESI (BNO NEWS) -- Indonesia's Mount Lokon erupted four times on Tuesday after increasing its volcanic activity during the past week, officials said.

Mount Lokon, which is located on the northern tip of the island of Sulawesi, had four small eruptions on Tuesday, spewing out materials between 150 and 200 meters (492 to 656 feet), Warno, an officer at the Mount Lokon and Mount Mahawu observation post at Kakaskasen village told the Antara news agency.

The first eruption took place at 7:21 a.m. local time and the fourth 2:20 p.m., producing thick white and gray smoke. According to Warno, this means water and gases are still being burned in the crater.

As of 6 p.m. local time on Tuesday, only one volcanic tremor was recorded on Tuesday, compared to Monday's two deep volcanic tremors as well as four distant tectonic quakes. The amplitude of the latest tremors ranged between 0.5 millimeters and 10 millimeters. Despite their amplitude declining compared to previous ones, Warno said magma was still being pushed upwards.

Officials at the Volcanic and Geological Disaster Mitigation Center have kept the volcano's alert status to level III, even though the geological activity has began decreasing.

Mount Lokon has shown constant volcanic activity since June, prompting authorities to raise its status to Alert on June 27 and Watch on July 10. A series of eruptions in mid-July forced at least 5,269 locals from the villages of Kinilow, Kelurahan Kinilow I and Kakaskasen 1 to evacuate the area.

While most residents returned to their homes later that month, some 222 people remain at temporary refugee camps because their homes are in Mound Lokon's red zone - 3 kilometers (1.86 miles) from its crater. After July's activity, Mount Lokon's alert level was lowered from Watch to Alert, and has remained at this level since.

On August 17, Mount Lokon began to spew volcanic ash which fell as far away as the Kinilow I village and the Tinoor areas in North Tomohon sub district, which is a short distance from Lokon's crater. And on August 28, it erupted as many as 12 times. Monitoring staff recorded 65 deep volcanic earthquakes and 93 shallow earthquakes that day.

Dozens of active volcanoes in Indonesia are part of the Pacific Ring of Fire, known for frequent earthquakes and volcanic eruptions. Next to Mount Lokon is its volcanic twin, Mount Empung, just 2.2 kilometers (1.3 miles) away.

One of Indonesia's most active volcanoes is Mount Merapi, which is located on the island of Java near Jogjakarta, the country's second-most visited area after Bali. Last year, more than 300 people were killed in a series of eruptions between October and November which also displaced over 300,000 people.

http://channel6newsonline.com/2011/09/indonesias-mount-lokon-erupts...

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SEP 6 :

Remote Alaska volcano resumes dome building

The lava dome at a remote Alaska volcano has resumed growing, prompting officials to raise its alert level. The dome now fills the floor of the crater at Cleveland Volcano, 940 miles southwest of Anchorage. The Alaska Volcano Observatory on Tuesday raised the volcano's alert level to watch status. The threat level was dropped on Aug. 30, but raised against after a persistent thermal anomaly started Saturday. Observatory officials say in a news release that's when the lave dome likely started growing again. The dome was 262 feet in diameter on Aug. 30, but is now about 394 feet in diameter. Officials say if that continues, lava flows could start on the flanks of the volcano. The growing dome also increases the possibility — but doesn't ensure — an explosive eruption.

http://www.adn.com/2011/09/06/2052236/remote-alaska-volcano-resumes...

http://hisz.rsoe.hu/alertmap/site/?pageid=event_update_read&edi...

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SEP 6 :

Earthquake swarm in Krýsuvík volcano, Indonesia

Earlier today a earthquake swarm did start in Krýsvík volcano. This earthquake appears tectonic in nature from what I can tell on my geophone. This type of earthquake swarm is common in this area in Krýsuvík volcano. It does not mean that a eruption is about to start. But this area is a rift zone and it has many earthquake swarms during the year. This is just one of them so far. It is impossible to know how large this earthquake swarm is going to be or how long it is going to last.

The first earthquake swarm did start at 15:42 UTC, the second earthquake swarm did start at 21:53 UTC. That earthquake swarm is currently ongoing with several earthquakes every 2 min or so.

The current area of activity is a lake named Kleifarvatn lake. But that lake is on top of Krísuvík volcano.



Current activity in Krýsuvík volcano. This is a tectonic earthquake activity, not volcanic. Copyright of this picture belongs to Iceland Met Office.

I think that this earthquake activity is going to continue something into the night and next few days at the longest.

http://www.jonfr.com/volcano/?p=1453

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SEP 6 :

Strong harmonic tremor pulse starting in Katla volcano

Jon Frimann is noticing strong harmonic tremor at Katla, which usually accompanies magma on the move.

 

Read here