General Volcanic Activity Thread!

[john pike]

 

lively seismometer from mammouth lakes

 

long valley area

 

list of quakes on link below

 

http://volcanoes.usgs.gov/volcanoes/long_valley/long_valley_monitoring_1.html

[Snowyowl9]

 

My fear is that this entire island chain will one day explode. A frightening situation indeed.

Global warming seems to be happening on the inside of the planet.

http://www.thejakartapost.com/news/2014/02/04/19-more-volcanoes-alert.html

[john pike]

 

lively seismometer from mammouth lakes

 

long valley area

 

list of quakes on link below

 

http://volcanoes.usgs.gov/volcanoes/long_valley/long_valley_monitoring_1.html

 

update today

 

31 quakes and still ongoing

 

http://hisz.rsoe.hu/alertmap/site/index.php?pageid=seism_last&rid=383831

 

updated seismic graph

 

Edited February 5, 2014 by john pike

[john pike]

 

After several months of little or no activity, the Ubinas Volcano in Moquegua is once again spewing smoke, ash.

 

 

The Ubinas Volcano near the southern city of Arequipa in Peru has become active again after several months of minimal activity.

 

According to El Comercio, the volcano is emitting columns made of ash, smoke, and steam, as well as registering seismic movements. Since Jan. 31, the volcano has reportedly experienced as many as 100 seismic events every day, including a Feb. 1 movement which lasted for seven hours.

 

http://www.peruthisweek.com/news-peru-ubinas-volcano-active-again-102154

[john pike]

Volcanoes Today, 5 Feb 2014: Nishino-shima

Wednesday Feb 05, 2014 13:03 PM |

Nishino-Shima island on 3 Feb. For comparison, the previous shorelines on 20 Jan (yellow) and 21 Nov past year (white). (Image: Japanese Coast Guard)

Nishino-shima (Volcano Islands): New images from an overflight on 3 February confirm that the activity on the former new island continues steadily. Over the past weeks, the vent has been feeding several active lava flow fronts, that enlarged the land covered by new lava in more or less all directions.

In particular, there are two active flows relatively close to the vent which have been heading out towards the southeast and formed a small almost closed bay with green-orange discolored water inside. The water color is a result of dissolved volcanic gasses and lava fragments in suspension.

In addition to the ongoing lava effusion, strombolian explosions occur from the main vent as well, which has built a small perfectly circular cone.

[john pike]

 

[The PIT]

Aaah someone thought Yellowstone was going to erupt. A good debunk http://www.wired.com/wiredscience/2014/02/think-yellowstone-erupt/#more-531961

[john pike]

hi pit

 

too many scaremonger stories out there

 

however i have the attitude that noone has seen this thing erupt

 

so predicting if it will will not be easy

 

and its not unknown for these vulcanoligists to get things wrong

 

i see no sign of anything to worry about there

 

long valley area may need to be watched though (mammouth l;akes) as still a lot of quakes there

 

http://volcanoes.usgs.gov/volcanoes/long_valley/long_valley_monitoring_1.html

 

http://hisz.rsoe.hu/alertmap/site/index.php?pageid=seism_last&rid=383831

Edited February 6, 2014 by john pike

[john pike]

seismic graph from mammouth lakes

 

 

and closest graph to long valley caldera

[karyo]

 

That's two of my favourite things in one! It doesn't get better than this!

 

Karyo

[john pike]

Volcanic activity worldwide 6 Feb 2014: Fuego, Nishino-shima, San Cristobal, Santa María / Santiagu...

Thursday Feb 06, 2014 17:42 PM |

Panoramic view of the Bove Valley at dawn (Photo: Emanuela / VolcanoDiscovery Italia)

Nishino-Shima island on 3 Feb. For comparison, the previous shorelines on 20 Jan (yellow) and 21 Nov past year (white). (Image: Japanese Coast Guard)

Current seismic signal from Pacaya (PCG station, INSIVUMEH)

Current seismic signal of Fuego (FG3 station, INSIVUMEH)

The seismic signal associated with the phreatic explosions at San Cristobal (CRIN stataion, INETER)

Ash plume from an explosion of Tungurahua this afternoon

Etna (Sicily, Italy): Lava continues to flow from the fissure vent at the eastern base of the New SE crater. Accompanied by slowly rising tremor, an overall gradual increase of the activity can be noted.

The front of the old lava flow is stopped at 1660 m while the active lava flow is descending on the upper wall of the valle del Bove.

Ash emission continues from the summit vent of the New SE crater.

Nishino-shima (Volcano Islands): (5 Feb) New images from an overflight on 3 February confirm that the activity on the former new island continues steadily. Over the past weeks, the vent has been feeding several active lava flow fronts, that enlarged the land covered by new lava in more or less all directions.

... [read more]

Dukono (Halmahera): Low-level ash plumes continue to be detected on satellite imagery almost every day, suggesting that explosive activity (strombolian type) is currently intense.

Santa María / Santiaguito (Guatemala): Activity has shown no to little variations but has decreased a bit overall. The lava dome has currently active flows on the SW and NE flanks and continues to produce small to moderate ash explosions from time to time.

Pacaya (Guatemala): No visible eruptive activity except degassing is being mentioned by INSIVUMEH. The seismic signal shows degassing tremor and deep-seated small explosions.

Fuego (Guatemala): Strombolian activity remains relatively intense and the seismic signal suggests it currently increasing. The volcano observatory reported that during the past 24 hours, there were frequent small to moderate explosions with incandescent ejecta reaching up to about 100 m above the crater and ash plumes of up to 500 m. Shock waves commonly accompany the explosions.

The lava flow on the upper southern slope had decreased to only about 75 m length.

San Cristobal (Nicaragua): A series of small, probably phreatic explosions occurred at the volcano's summit crater early on Tuesday. INETER indicated the activity took place between 6:41 - 8:50 local time and consisted of at least 2 explosions, which generated a small steam and ash plume rising to about 200 m height.

INETER believes that these eruptions were an isolated event and not sign of a new eruptive phase with new magma involved, but most likely caused by the sudden vaporization of overheated infiltrated rain water. The alarm level of the volcano was not raised and no particular measures are planned.

Reventador (Ecuador): Intense degassing and occasional weak explosions with ash emissions probably continue, based on the more or less unchanged moderately intense seismic activity. Visual observations were not possible over the past days due to cloud cover.

Tungurahua (Ecuador): The volcano continues to be very active with frequent explosions that eject incandescent lava to several hundred meters height and ash plumes rising up to 3-4 km above the summit.

Strong shock waves and cannon-shot explosion sounds accompany the eruptions. Ash fall occurred in Pondoa, Runtún, Triunfo, and Río Verde.

.

[john pike]

http://volcanoes.usgs.gov/volcanoes/long_valley/long_valley_monitoring_1.html

 

still a lot of quakes at long valley

 

mammouth lakes seismicity graph

[Snowyowl9]

Aaah someone thought Yellowstone was going to erupt. A good debunk http://www.wired.com/wiredscience/2014/02/think-yellowstone-erupt/#more-531961

And the BBC2 documentary supervolcanoes the first place we saw about this this off back in 2000.Some nice scaremongering for you,its overdue.http://www.bbc.co.uk/science/horizon/1999/supervolcanoes.shtml Edited February 8, 2014 by Snowyowl9

[karyo]

And the BBC2 documentary supervolcanoes the first place we saw about this this off back in 2000.Some nice scaremongering for you,its overdue.http://www.bbc.co.uk/science/horizon/1999/supervolcanoes.shtml

I hope it does! We need something to happen to cool the climate and give us some excitement!

 

Karyo

[john pike]

Scientists at the Alaska Volcano Observatory are going to be keeping a close eye on Shishaldin Volcano over the weekend. The volcano emitted a small ash cloud that was identified early Friday morning. AVO geologist Chris Waythomas says the cloud drifted south of the volcano and dissipated. "However, Shishaldin is a very frequently active volcano, and this could mean that we’re heading into an eruptive period," he says. "It may not necessarily, but it wouldn’t surprise us if the volcano started getting more active." Shishaldin was upgraded to a yellow alert level last week after abnormal behavior began. Waythomas says this ash cloud seems to have come from a combination of magma close to the surface, and increased steaming and temperatures in the crater. Some of the seismic monitoring stations that track Shishaldin are still out of order. Waythomas says they’re relying on two functioning stations to look for earthquakes inside the volcano and other changes that could foretell an eruption. "It can be explosive, and it could put ash clouds up to flight levels," he says. "That would not be unusual for this volcano to do that." Shishaldin’s eruption in 1999 sent ash plumes as high as 45,000 feet above sea level. It last erupted in 2004, and the last time it showed unrest like this was in 2009. Shishaldin is the highest peak in the Aleutians. It’s also the world’s most symmetrical glacier-covered, conical volcano.

 

http://hisz.rsoe.hu/alertmap/site/?pageid=event_desc&edis_id=VA-20140208-42611-USA

[john pike]

mammouth lakes swarm still ongoing

 

http://hisz.rsoe.hu/alertmap/site/index.php?pageid=seism_last&rid=384507

 

http://quakes.globalincidentmap.com/

[The PIT]

mammouth lakes swarm still ongoing

 

http://hisz.rsoe.hu/alertmap/site/index.php?pageid=seism_last&rid=384507

 

http://quakes.globalincidentmap.com/

Question is whether these earthquakes are getting nearer the surface.

[john pike]

 

Question is whether these earthquakes are getting nearer the surface.

http://volcanoes.usgs.gov/volcanoes/long_valley/long_valley_monitoring_1.html

Edited February 8, 2014 by john pike

[Snowyowl9]

I hope it does! We need something to happen to cool the climate and give us some excitement! Karyo

I think the sun going in a quiet mode will bring on the cooling.

[karyo]

I think the sun going in a quiet mode will bring on the cooling.

I have my fingers crossed. 

[john pike]

Etna volcano - eruption update Activity continues at the New SE crater

Update Sun 09 Feb 10:51

Weak strombolian activity and the lava flow from Etna's New SE crater last evening

Current tremor amplitude (ECPNZ station, INGV Catania)

The currently active 2 branches of the lava flow seen from the Monte Cagliato webcam (INGV Catania) this morning

Activity from the New SE crater continues essentially unchanged. Weak strombolian activity occurs at the summit vent, sometimes associated with more or less pronounced ash emissions.

When observed last evening, ejections at the NSEC rarely exceeded 50-100 m above the rim and only occasionally, bombs landed on the outer flank. The lava flow, only about 500-600 m long last night and half way down to the bottom of the Valle del Bove headwall, increased over night. It developed a second branch and its most advanced fronts have now reached again the base of the Valle del Bove.

Tremor fluctuates with an overall slowly rising trend. This seems to correspond rather to an increase in effusive(lava flow) than explosive activity.

[john pike]

Volcanic activity worldwide 9 Feb 2014: Shiveluch, Etna, Kilauea

Sunday Feb 09, 2014 18:45 PM |

Bright glow from the active lava dome of Shiveluch this morning

Halemaumau Thermal Image of Lava Lake on Feb 7, 2014

Etna (Sicily, Italy): Activity from the New SE crater continues essentially unchanged. Weak strombolian activity occurs at the summit vent, sometimes associated with more or less pronounced ash emissions.

When observed last evening, ejections at the NSEC rarely exceeded 50-100 m above the rim and only occasionally, bombs landed on the outer flank. The lava flow, only about 500-600 m long last night and half way down to the bottom of the Valle del Bove headwall, increased over night. It developed a second branch and its most advanced fronts have now reached again the base of the Valle del Bove.

Tremor fluctuates with an overall slowly rising trend. This seems to correspond rather to an increase in effusive(lava flow) than explosive activity.

Shiveluch (Kamchatka): (8 Feb) A phase of intense activity has been taking place at the volcano over the past few days. On 6 Feb afternoon (or early morning 7 Feb in Kamchatka), a large eruption occurred. VAAC Tokyo spotted an ash plume drifting at approx. 27,000 ft (9 km) altitude more than 300 km northwest. The ash plume reached the Sea of Okhotsk and ash fall occurred in the village Sedanka at more than 200 km distance from the volcano.

Unfortunately, webcam images do not allow to determine whether this eruption had been caused by an explosion liberating accumulated pressure, or whether a major collapse of the actively growing viscous lava dome had taken place, producing pyroclastic flows and related co-ignimbrite ash plumes. It is possible if not likely that it was the result of a combination of both.

Kilauea (Hawai'i): (8 Feb) Per HVO, Kilauea's summit lava lake rose by 20m/66ft in the past week, just another 15m/49ft until it's visible from the Jaggar Overlook!

[john pike]

http://volcanoes.usgs.gov/volcanoes/long_valley/long_valley_monitoring_1.html

 

mammouth lake swarm still ongoing ( over 50 today at time of posting)

 

update at 01.00  now 67

 

depths around 5-6km deep

 

mammouth lake seismicity graph

 

 

still waiting to see what usgs makes of this

 

http://volcanoes.usgs.gov/volcanoes/mammoth_mountain/

Edited February 12, 2014 by john pike

[john pike]

Volcanoes Today, 11 Feb 2014: Kelud, Etna, Kilauea

Tuesday Feb 11, 2014 15:03 PM |

Photo of the pyroclastic flow on Etna this morning (Photo: Mike Schüler, facebook)

Comparison of thermal images showing the evolution of the eastern flank of the NSEC during the past 36 hours

Seismic activity at Kelut volcano during the past weeks (VSI)

Etna (Sicily, Italy): A (for Etna standards) very large pyroclastic flow descended this morning on the eastern flank from the area of the new vents that opened yesterday on the eastern side beneath the summit of the New SE crater.
Most likely, explosive lava-snow interaction and destabilization of this area where new magma was pushing its way outside caused a sector to collapse and descend the Valle del Bove flank as a hot turbulent avalanche (=pyroclastic flow). It reached the bottom of Valle del Bove in less than 3 minutes and traveled about 3 km length, which implies an average speed of 60 km/h, with maximum speed probably in excess of 100 km/h (approx. 65 mph).



...11 Feb:
The following is a comparison of some characteristic stages of the vents and lava flows on the eastern flank of the New SE cone:

 

 

Kilauea (Hawai'i): (10 Feb) 32 earthquakes were strong enough to be located beneath Kilauea Volcano in the past 24 hours, including 21 scattered broadly beneath the summit caldera. Kelut volcano (East Java, Indonesia): seismic swarm, alert level increased

Tuesday Feb 11, 2014 08:35 AM | BY: T

Seismic activity at Kelut volcano during the past weeks (VSI)

Hypocenters of recent earthquakes under Kelut volcano (VSI)

VSI raised the alert status to the second highest level 3 (out of 4), "Siaga" (meaning eruption warning). In its latest report, VSI informs that an ongoing slight deformation, suggesting magma intrusion, has been detected since September and that a strong increase in seismic activity started on 7 February. A seismic swarm occurred with hypocenters between 1.5-3.5 km depth beneath the summit area.
The increased seismic activity triggered the decision to raise the status once more, after the volcano had put on alert level 2 already on 2 Feb.

• [*]

All news about: Kelud volcano [*]Information about: Kelud volcano

Edited February 11, 2014 by john pike

[john pike]

Volcano in Ecuador causing crop shortage, rising prices

After a week of eruptions, the Tungurahua volcano in Ecuador has damaged thousands of hectares of crops, leaving a feed shortage for 110,000 head of livestock.

The volcano erupted on Feb. 2, sending an ash plume about 13 km high, followed by two other moderate-sized explosions that sent ash about five kilometres into the sky. Since then, the volcano has continued to erupt.

 

http://globalnews.ca/news/1139403/volcano-in-equador-continues-to-rage/

 

video inside link above