General Volcanic Activity Thread!

[john pike]

Volcanoes Today, 27 Mar 2014: Grímsvötn, Hekla

Thursday Mar 27, 2014 23:00 PM |

Earthquakes under Grímsvötn volcano, probably a result of the glacial flood (Icelandic Met Office)

Strain and earthquakes under Hekla volcano (Iceland Met Office)

Grímsvötn (Iceland): A small jökulhlaup (glacier outburst flood) started yesterday from the subglacial lake Grímsvötn and has been discharging into the river Gígjukvísl.
The event, which could have been triggered by normal fluctuations of hydrothermal activity under the ice is expected to be small. The Icelandic Met Office reports maximum discharge rates on the order of magnitude 1000 cubic meters per second, similar to rates during summer ice melt, and expects no damage to occur. The maximum of the flood is expected to be around the end of the week.
A small shallow earthquake swarm, probably as a result of adjustments in the ice mass above the draining lake, has accompanied the flood today. There are no indications that the flood was caused by a volcanic eruption of Grímsvötn volcano.

Hekla (Iceland): The volcano remains restless, but without any indication of an impending eruption (however, it is notorious for not giving much warning either).
3 tiny earthquakes, all below magnitude 2, occurred today and add to the ongoing series of occasional small quakes under the volcano.
Current GPS and strain (volume changes of the bedrock, a strong indicator immediately prior to an eruption, while magma is pushing upwards) measurements show no significant variations.

 

 

 

 

 

 

 

 

 

http://en.vedur.is/earthquakes-and-volcanism/earthquakes/myrdalsjokull/#view=table

 

hekla had a recent burst of quakes

 

certainly interesting to watch as this thing can go with little or no warning

 

 

http://www.livefromiceland.is/webcams/hekla/

 

webcam link above

Edited March 28, 2014 by john pike

[john pike]

Akyarlar volcano turkey

http://www.volcanodiscovery.com/akyarlar.html

 

 

http://volcanodiscovery.com/akyarlar-earthquakes.html

 

quite a swarm there at present

 

plate movement or magma movement is unclear at present

 

will update once it becomes available

[john pike]

Shishaldin volcano news & activity updates: Shishaldin volcano (Aleutian Islands, Alaska): alert level raised, likely new lava dome growing incrater

Saturday Mar 29, 2014 10:07 AM | BY: T

The Alaska Volcano Observatory raised the alert level for the volcano to Aviation Color Code ORANGE and Alert Level WATCH: "Elevated surface temperatures were detected in satellite data beginning on March 18 and have persisted to the present time.

Analysis of this data shows that temperatures are consistent with the eruption of lava within the summit crater. The current activity appears to be confined to the deep summit crater and there have been no observations of lava on the flanks of the volcano or surrounding the summit crater.

Web camera images, satellite data and pilot observations over the past week show only minor steam emissions from the mountain's summit crater. There has been no evidence of ash emission.

Sound waves coupling into the ground (ground-coupled air waves) indicative of small explosions in the crater began to be seen in seismic data on March 18 and continue to be detected intermittently." (AVO)

[*]All news about: Shishaldin volcano

[*]Information about: Shishaldin volcano

http://www.volcanodiscovery.com/shishaldin/news/43518/Shishaldin-volcano-Aleutian-Islands-Alaska-alert-level-raised-likely-new-lava-dome-growing-incrater.html

 

 

Reventador volcano, Ecuador: news & activity updates Reventador volcano (Ecuador): elevated activity, lava flows and ash emissions

Saturday Mar 29, 2014 10:16 AM | BY: T

Overlaying of thermal and visible images showing the new lava flows on Reventador (image: F. Vásconez , IG)

Current seismic signal from Reventador (CONE station, IGPEN)

The volcano's activity has remained high since the beginning of the current eruptive phase since 25 March. Fresh lava continues to extrude at the summit crater, adding to the dome that had been active since 2011, and producing incandescent avalanches, small pyroclastic flows on its flanks and ash emissions.

Seismic activity has remained at high levels, showing continuous tremor and emissions signals. IGPEN reports that the pyroclastic flows on the E, SE and S flanks have traveled up to 1.5 km from the summit. Additionally, there seems to be at least 2 lava flows that descend the south-eastern and eastern flank of the volcano, with fronts reaching approx. 500 m distance.

[*]All news about: Reventador volcano

[*]Information about: Reventador volcano

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

http://www.volcanodiscovery.com/reventador/news/43523/Reventador-volcano-Ecuador-elevated-activity-lava-flows-and-ash-emissions.html

[john pike]

A swarm of little earthquakes has been rumbling this week beneath Mount Hood, Oregon's tallest peak, but geologists said there is no cause for alarm. Sensors have recorded nearly 40 tremors near Government Camp, an unincorporated community in Clackamas County, since Sunday morning, with the largest a magnitude 2.3, barely big enough to feel. The 11,240-foot mountain is a mecca for skiers, hikers and climbers. It is also volcanic. But researchers say the recent quakes are normal activity and aren't signs of volcanic activity, such as magma heating up and starting to flow beneath the mountain. "No one should start to batten down the hatches," said Ian Madin, chief scientist with the Oregon Department of Geology and Mineral Industries. Mount Hood is in a chain of volcanic peaks, called the Cascade Range, stretching from Canada into California. The chain includes Mount St. Helens, just to the north of Mount Hood, which erupted violently in 1980 and last erupted in January 2008. Geologists say the recent quakes on Mount Hood appear to be caused by tectonic plates shifting, possibly along a nearby fault line deep in the earth, as the Cascades slowly stretch. It's a process that has been happening over millions of years. Seismologist Seth Moran at the Cascades Volcano Observatory in Vancouver, Wash., said it's not clear where exactly the quakes originated - they are small and deep, and there are not enough seismic stations in the area to pinpoint them - but he thinks most occurred near Government Camp. He said "bursty" swarms of small earthquakes under the mountain's south flank are normal, but a large quake right under its peak or a sustained series of quakes that build in magnitude could be cause for alarm. The quakes this week fit within the broad category of what is normal in the region, Moran said. Little quakes like these give scientists a better understanding of what that "regular state of being" looks like, he said. They can then compare the "normal" against activity that may be a precursor of greater threats. Geologists say the last confirmed eruption of Mount Hood was more than 230 years ago, and it's hard to predict when it will blow again. Any of the volcanoes in the Cascades could erupt again "in our lifetimes," Moran said.

 

http://hisz.rsoe.hu/alertmap/site/?pageid=event_desc&edis_id=EQ-20140329-43173-USA

[john pike]

http://www.volcanodiscovery.com/photo-of-the-day/2014-mar-29.html

[john pike]

Volcano news: Karymsky

latest (2014) | 2013 | Jun-Dec 2012 | archive

Saturday, Mar 29, 2014

Karymsky volcano (Kamchatka) activity update

Activity at the volcano seems to have been on comparably high levels, since ash plume reports have become more frequent recently. VAAC Tokyo reported ongoing ash emissions with a plume drifting eastwards at estimated 7,000 ft (2.1 km) altitude.

 

http://www.volcanodiscovery.com/kamchatka/karymsky/news.html

[Buriedundersnow]

look very closely there may be some activity at Hekla there looks to be a small orange glow at the top of the volcano

 

http://www.livefromiceland.is/webcams/hekla/

[john pike]

• Research

M4.8 - 37km ENE of West Yellowstone, Montana 2014-03-30 12:34:39 UTC

PAGER - GREEN ShakeMap - V DYFI? - III

Return to the EQ List/Map/Search

Google Earth KML

Summary

Location and Magnitude contributed by: University of Utah Seismograph Stations

General

 

+-

30 km

20 mi

Powered by Leaflet

Wyoming

44.778°N, 110.683°W

Depth: 6.8km (4.2mi)

Event Time

• 2014-03-30 12:34:39 UTC
• 2014-03-30 06:34:39 UTC-06:00 at epicenter
• 2014-03-30 13:34:39 UTC+01:00 system time

Location

44.778°N 110.683°W depth=6.8km (4.2mi)

Nearby Cities

• 37km (23mi) ENE of West Yellowstone, Montana
• 105km (65mi) SSE of Bozeman, Montana
• 138km (86mi) NE of Rexburg, Idaho
• 178km (111mi) NE of Ammon, Idaho
• 228km (142mi) SSE of Helena, Montana

Related Links

• Additional earthquake information for Wyoming
• Additional earthquake information for Montana
• Additional earthquake information for United States
• Yellowstone Volcano Observatory (YVO)
• View location in Google Maps

Additional Commentary

YELLOWSTONE VOLCANO OBSERVATORY INFORMATION STATEMENT

Sunday, March 30, 2014 10:31 AM (Sunday, March 30, 2014 16:31 UTC)

YELLOWSTONE VOLCANO (VNUM #325010)

44°25'48" N 110°40'12" W, Summit Elevation 9203 ft (2805 m)

Current Volcano Alert Level: NORMAL

Current Aviation Color Code: GREEN

The University of Utah, a YVO member agency, sent out the following press release about a magnitude 4.8 earthquake that occurred this morning at 6:34 AM MDT.

PRESS RELEASE

University of Utah Seismograph Stations

Released: March 30, 2014 08:15 AM MDT

The University of Utah Seismograph Stations reports that a light earthquake occurred at 06:34 AM on March 30, 2014 (MDT). The epicenter of the magnitude 4.8 shock was located 4 miles north-northeast of Norris Geyser Basin in Yellowstone National Park, Wyoming. This earthquake is part of a series of earthquakes that began in this area on Thursday, March 27. As of 8:15 am today, this series has included at least 25 earthquakes in addition to the main shock, with the largest of magnitude 3.1. The magnitude 4.8 main shock was reported felt in Yellowstone National Park and in the towns of West

Yellowstone and Gardiner, Montana.

Anyone who felt the earthquake is encouraged to fill out a survey form on either the Seismograph stations web site: www.quake.utah.edu or the U.S. Geological Survey web site: earthquake.usgs.gov.

____________________________________________________________________

Today's event is the largest earthquake at Yellowstone since February 22, 1980, and occurred near the center of a region of recent ground uplift described in a YVO Information Statement on February 18, 2014. The Yellowstone Volcano Observatory has been tracking this uplift episode for about 7 months.

As discussed in the March 3, 2014 YVO Monthly Update, seismicity in the general region of the uplift has been elevated for several months. A previous period of uplift in this area occurred between 1996 and 2003, and it was also accompanied by elevated seismicity.

A USGS field team is in Yellowstone and will visit the area near the earthquake's epicenter today. The team will look for any surface changes that the earthquake may have caused, and for possible effects to the hydrothermal system at Norris Geyser Basin.

Based on the style and location of today's earthquake, at this time YVO sees no indication of additional geologic activity other than continuing seismicity.

The Yellowstone Volcano Observatory (YVO) provides long-term monitoring of volcanic and earthquake activity in the Yellowstone National Park region. Yellowstone is the site of the largest and most diverse collection of natural thermal features in the world and the first National Park. YVO is one of the five USGS Volcano Observatories that monitor volcanoes within the United States for science and public safety.

YVO Member agencies: USGS, Yellowstone National Park, University of Utah, University of Wyoming, UNAVCO, Inc., Wyoming State Geological Survey, Montana Bureau of Mines and Geology, Idaho Geological Survey

 

http://earthquake.usgs.gov/earthquakes/eventpage/uu60061837#summary

MAP 3.3  2014/03/30 09:12:24 44.777N 110.723W  6.0   29 km (18 mi) S   of  Gardiner, MTMAP 3.1  2014/03/30 09:07:49 44.770N 110.720W  6.6   30 km (18 mi) S   of  Gardiner, MTmap 2.5  2014/03/30 07:56:40 44.770N 110.714W  7.7   30 km (18 mi) S   of  Gardiner, MTMAP 3.1  2014/03/30 07:30:52 44.772N 110.698W  4.5   29 km (18 mi) S   of  Gardiner, MTMAP 4.8  2014/03/30 06:34:39 44.778N 110.683W  6.8   29 km (18 mi) S   of  Gardiner, MTMAP 3.0  2014/03/30 04:36:25 44.786N 110.690W  1.6   28 km (17 mi) S   of  Gardiner, MTmap 1.8  2014/03/30 01:10:59 36.891N 114.294W  4.0   20 km (12 mi) NW  of  Bunkerville, NV

map 2.8 2014/03/30 00:23:48 44.785N 110.681W 1.5 28 km (17 mi) S of Gardiner, MT

 

 

http://www.seis.utah.edu/req2webdir/recenteqs/Quakes/quakes0.html

 

 

 

http://www.isthisthingon.org/Yellowstone/daythumbs.php

 

LINK ABOVE SHOWS ALL THE GRAPHS

 

they certainly are lively

 

no concerns at present unless these quakes get bigger

Edited March 30, 2014 by john pike

[john pike]

Volcanoes Today, 30 Mar 2014: Etna, Ibu, Poas, Sinabung

Sunday Mar 30, 2014 11:00 AM |

Thermal image of Etna's eastern flank with the New SE crater (Monte Cagliato thermal webcam, INGV Catania)

MODIS hot spot at Ibu volcano (ModVolc, Univ. Hawaii)

Sinabung volcano this morning (VSI webcam)

Phreatic eruption at Poás volcano Friday morning (OVSICORI-UNA webcam)

Etna (Sicily, Italy): Since the end of lava effusion 3 days ago, Etna has remained all quiet and the recent flow field is now slowly cooling down.

Ibu (Halmahera, Indonesia): Activity (effusive / explosive) continues at the volcano, which has an active lava dome. A new MODIS hot spot is visible on satellite data, suggesting this has recently increased.

Sinabung (Sumatra, Indonesia): The volcano remains active on a slowly decreasing trend, with little variation over the past weeks. The viscous lava lobe remains weakly alimented and continues to grow very slowly.

An intermittent steam and sometimes light ash plume often rises up to about 14,000 ft (4.2 km) altitude.

No new pyroclastic flows have occurred recently.

Poas (Costa Rica): Another small phreatic eruption occurred from the volcano's crater lake Friday morning.

[john pike]

ALASKA VOLCANO OBSERVATORY DAILY UPDATE Sunday, March 30, 2014 10:29 AM (Sunday, March 30, 2014 18:29 UTC)

SHISHALDIN VOLCANO (CAVW #311360)

54°45'19" N 163°58'16" W, Summit Elevation 9373 ft (2857 m)

Current Volcano Alert Level: WATCH

Current Aviation Color Code: ORANGE

Elevated surface temperatures were detected in Satellite images of Shishaldin today. Occasional sound waves coupling into the ground (ground-coupled air waves) continue to be seen.

 

http://volcanoes.usgs.gov/activity/status.php#yvo

[john pike]

Krakatau volcano news & eruption updates: Krakatau volcano (Indonesia): new eruption reported

Monday Mar 31, 2014 18:19 PM | BY: T

New activity might have started at the volcano. An aircraft reported having sighted an ash plume from Anak Krakatau this afternoon at 10,000 ft (3 km) altitude.
On the other hand, VAAC Darwin who relayed the original report, mentioned that no ash plume could be detected on satellite data, and there is currently no hot spot on MODIS data. Whether or not a new eruption actually occurred at the volcano remains unclear, but would not be surprising at all.

 

http://www.volcanodiscovery.com/krakatau/news/43583/Krakatau-volcano-Indonesia-new-eruption-reported.html

 

Volcano news: Karymsky

latest (2014) | 2013 | Jun-Dec 2012 | archive

Monday, Mar 31, 2014

Karymsky volcano (Kamchatka) activity update

The volcano remains more active than average. Another series of strombolian to vulcanian-type explosions today produced ash plumes rising to estimated 7,000 ft (2.1 km) and drifting SE (VAAC Tokyo).

 

http://www.volcanodiscovery.com/kamchatka/karymsky/news.html

 

 

Reventador volcano, Ecuador: news & activity updates Reventador volcano (Ecuador) activity update

Monday Mar 31, 2014 18:43 PM | BY: T

MODIS hot spot data (past 7 days) for Reventador volcano (ModVolc, Univ. Hawaii)

Current seismic signal from Reventador (CONE station, IGPEN)

Activity at the volcano remains elevated, although no direct observations were possible in the last days due to cloud cover. A lava flow might be descending from the new dome on the eastern side, various reports suggests.
The observatory reported slight ash fall in the Hosteria
Reventador and the camp in San Rafael, both near the volcano. Noises from moderate explosions were heard.

• All news about: Reventador volcano
• Information about: Reventador volcano

 

 

http://www.volcanodiscovery.com/reventador/news/43598/Reventador-volcano-Ecuador-activity-update.html

 

 

News from Ubinas volcano:

latest (2014) | 2013 | 2009 | archive

Monday, Mar 31, 2014

Ubinas volcano (Peru): small explosive eruption today

Ash puff from Ubinas volcano this morning

A small explosive eruption took place earlier today, producing a plume of steam and ash that rose a few 100 meters. As the new lava dome inside the volcano's crater continues to grow, more and possibly stronger explosions can be expected. Video showing the eruption:

 

 

 

 

 

http://www.volcanodiscovery.com/ubinas/news.html

 

 

Edited March 31, 2014 by john pike

[john pike]

New Discovery: fossil dinosaur footprints in volcanic ash layers might challenge date of dinosaur extinction

Monday Apr 01, 2014 00:01 AM | VolcanoDiscovery

Recently discovered dinosaur footprints in volcanic ash layers could challenge the widely accepted theory that dinosaurs got extinct 65 million years ago.

What caused the end of the dinosaur era?

There are several theories regarding the mass extinction at the end of the Cretaceous that ended the era of dinosaurs. Most accepted is the idea that the large meteorite impact which occurred around the same time was a key trigger for the mass extinction.

Shortly before this impact, however, our planet also underwent a phase of unusually large volcanic eruptions. These are believed to have released huge amounts of volcanic gases and ash into the air,- something which is very likely to have had a severe negative effect on the dinosaurs’ health.

A new discovery

During routine fieldwork on a remote island volcano back in January 2013, volcanologist Ingrid Smet (Ghent University, Belgium) and Dr. Tom Pfeiffer (VolcanoDiscovery, www) came across a rare discovery: fossil dinosaur footprints in recently exposed volcanic ash layers.

Stromboli volcano had a peak of activity during early January and suffered a major landslide on 12 January. The slide had carved into older layers on the steep slope of the volcano, exposing much older volcanic layers.

In order to investigate the new crater configuration, Smet and Pfeiffer hiked up the volcano and found the dinosaur footprints by coincidence in a fresh outcrop near their route uphill, at approx. 600 m elevation, just above the upper level of vegetation which until then had conserved the footprints.

 

http://www.volcanodiscovery.com/news/new-discovery-dinosaur-footprints-volcanic-ash-challenge-extinction-theory.html

 

interesting findings and more in link above

 

----------------------------------------------------------------------------------

 

KÄ«lauea volcano eruption update

Week of March 31st, 2014

Update Mon 31 Mar 22:28

No significant changes in Kilaueas eruption activity over the past week - although the lava lake rose slightly to about 46m (151ft) below the floor of Halema`uma`u crater.

The northeast spatter cone complex continued to feed the Kahauale`a 2 lava flow, though this flow is still not legally or safely accessible. Smoke plumes from forest fires during the day and glowing spots at night confirm that the flow remains active on the East Rift Zone of Kilauea as seen in this photo (courtesy of USGS).

 

http://www.volcanodiscovery.com/hawaii/kilauea/current-activity.html

[john pike]

Etna volcano updates and eruption news:

Etna volcano update: Activity resumes at Etna's New SE crater

Wednesday Apr 02, 2014 11:45 AM | BY: EMANUELA

http://www.volcanodiscovery.com/etna/news/43654/Etna-volcano-update-Activity-resumes-at-Etna-s-New-SE-crater.html

Did not take long to wake up again

[john pike]

A volcano in southwestern Peru called Ubinas began ejecting pyroclastic material into the sky in 2006, after over four decades of lying dormant. Recent volcanic activity has prompted officials to evacuate 60 residents of Querapi, a village near its base. The last state of emergency due to Ubinas activity occurred on April 23, 2006. Ubinas town mayor Pascual Coaquira said the villagers were relocated Saturday, and that residents of the town of Ubinas have been distributed masks and goggles, as the building ash content in the air has made it difficult for some to breathe. Portions of Peru lie in the Andean Volcanic Belt, which is comprised of four main volcanic zones. The stratovolcano Ubinas lies in the Central Volcanic Zone (CVZ) of the belt, a series of volcanoes formed due to subduction of the Nazca Plate under western South America along the Peru-Chile Trench. Ubinas is situated in southwestern Peru, and its upper slopes are primarily made up of of Pleistocene andesitic lava flows, and steepen to nearly 45 degrees. The steep walls allowed for the debris-avalanche from the collapse of the southeast flank of volcano to extend 6.2 miles. In the larger Moquegua region, including Arequipa and Tacna, there are roughly 40 volcanoes, most of which are inactive.

 

http://hisz.rsoe.hu/alertmap/site/?pageid=event_update_read&edis_id=VE-20140401-43203-PER&uid=14791

[john pike]

News from Ubinas volcano: Ubinas volcano (Peru): more ash explosions

Thursday Apr 03, 2014 07:47 AM | BY: T

Ash emission from Ubinas last night

The volcano has increased its visible activity and produced several more small to medium-sized explosions over the past days. Ash plumes rose up to about 2 km height.

Residents of Querapi village had started to evacuate. Ashfall was reported in Ubinas and Querapi.

[*]All news about: Ubinas volcano

[*]Information about: Ubinas volcano

[john pike]

Volcanoes Today, 3 Apr 2014:  Shiveluch, Reventador, Tungurahua

Thursday Apr 03, 2014 09:00 AM |

Explosion at Reventador Monday evening

Current seismic signal from Tungurahua (RETU station, IG)

Ash emission from Ubinas last night

Shiveluch (Kamchatka): No significant changes in activity occurred recently. The volcano remains active. Slow lava-dome extrusion continues accompanied by ash explosions, incandescence, hot avalanches, and fumarolic activity.

A bright thermal anomaly was detected daily in satellite images. The Aviation Color Code remained at Orange. (USGS / KVERT)

Reventador (Ecuador): Activity remains high. The volcano produces frequent small ash explosions and lava extrudes in a new flow on the upper eastern flank.

Most of the time, the volcano is in clouds and only occasionally allows direct observations.

Tungurahua (Ecuador): The volcano continues to be restless with moderate seismic activity. Short emissions occurred occasionally during the past days, but most of them were inferred by seismic signals and could not be observed directly due to cloud cover.

Minor ashfall was reported in El Manzano (8 km SW) and Cahuaji on 26 March. Seismicity was at moderate levels and then declined during 28 March-1 April. Lahars on 31 March traveled down the Vascún (N) and Mapayacu (SW) drainages, carrying blocks up to 1 m in diameter in the latter drainage (from the latest Smithsonian / USGS Weekly Volcanic Activity Report).

[john pike]

Hrómundartindur volcano

Stratovolcano 540 m / 1,772 ft, Southwestern Iceland, 64.07°N / -21.2°W

 

 

http://volcanodiscovery.com/hromundartindur-earthquakes.html

 

quite a swarm there at present

 

 

 

http://en.vedur.is/earthquakes-and-volcanism/earthquakes/reykjanespeninsula/

 

 

Background:

Hrómundartindur is a small volcanic system located south of Thingvallavatn lake and immediately east of the Hengill volcanic system. It lies at a ridge-ridge-transform triple junction at the eastern end of the Reykjanes Peninsula, where the west Iceland volcanic zone changes direction from approximately W-E to SW-NE. Hrómundartindur was last active about 10,000 years ago, and displays vigorous geothermal activity at the Ölkeduháls geothermal field. The most recent eruptions in the Ölkeduháls area took place at the end of the latest glacial period, but Ölkeduháls currently contains numerous hot springs, mud pools, fumaroles, and mineral warm springs. Increased seismic activity and slow land uplift beginning in 1994 indicated magma flow into the roots of the volcanic system at 7 km depth. The activity continued for more than 4 years.

---

http://www.volcanodiscovery.com/hromundartindur.html

 

this may or may not be anything to do with the volcano

 

but will update when more details come in

[john pike]

 

Baby Volcanic Island Eats Its Older Neighbor

 

As a seafloor volcano continues to erupt in a remote part of the Pacific Ocean, a newborn island has swallowed its neighbor whole, images from space show.

In November 2013, a baby volcanic island rose from the sea out of a volcanic blast in the Bonin Islands about 620 miles (1,000 kilometers) south of Tokyo, on the western edge of the Pacific "Ring of Fire," a hotbed of seismic activity. Named Niijima, the newcomer boiled the sea and spewed steam, ash and lava fragments into the air.

Some thought the small black cone — which sprouted just offshore of a larger volcanic island called Nishino-shima — might slip back into the sea, vanishing under pounding waves. But Niijima kept growing. [Stunning Pictures: Japan's New Volcanic Island]

 

Now a satellite image taken March 30, 2014, by the Operational Land Imager on Landsat 8 shows that Niijima has actually overtaken Nishino-shima.

Together, the conjoined islands measure about 3,280 feet (1,000 meters) across, officials with NASA's Earth Observatory said. The landmass has also tripled in height since December, now rising more than 196 feet (60 m) above sea level.

The smashed-together islands mark the top of a giant submarine volcano that had not erupted since a major outpouring in 1973 to 1974, according to the Japanese Coast Guard. Lava flows are now most active in the southern portion of the new landmass, and plumes of ash continue to rise, with tiny particles seeding a stream of white cloud puffs overhead. 

"The intermittent, pulsing shape of the cloud stream might be a reflection of the volcanic eruption itself," officials with NASA's Earth Observatory wrote. "Strombolian explosions are essentially bubbles of lava and gas rising from Earth's interior in pulses. Underwater, sediment appears to be stirred up in a green plume that stretches eastward from the island.

 

http://www.livescience.com/44625-baby-volcanic-island-eats-its-neighbor.html

 

link supplied above

[karyo]

New spectacular eruption of Tungurahua volcano!

 

http://www.usatoday.com/story/news/world/2014/04/04/ecuador-volcano-tungurahua-quito/7334383/

 

Karyo

[john pike]

Tungurahua volcano news & eruption updates: Tungurahua volcano (Ecuador): new eruption

Saturday Apr 05, 2014 08:46 AM | BY: T

Eruption of Tungurahua on 4 April 18:10 (F. Vásconez - OVT/IGEPN)

Current seismic signal from Tungurahua (RETU station, IG)

The volcano entered a new vigorous eruptive phase yesterday evening. A moderately strong vulcanian explosion occurred at 18:10 (local time) and produced an eruption column rising several kilometers as well as small pyroclastic flows on the cone.
The eruption plume (originally estimated to have reached up to 50,000 ft / 15 km altitude, but probably much lower than that) drifted to westerly directions. Ash / lapilli fall with 1-3 cm diameter clasts occurred in the areas of Bilbao, Choglontus, Chacauco and Cusúa.
The explosion, which likely cleared the conduit from a solid plug was followed by frequent, smaller explosions accompanied by a constant tremor signal of high energy. When the volcano was not hidden in clouds, the expulsion of incandescent blocks that rolled down the upper flanks, and steam-gas-ash emissions could be observed. Individual stronger explosions also occurred intermittently, some of which rattled the windows and doors of the Tungurahua Volcano Observatory (OVT), located 14 Km northwest.

Related explosion 18:10 (local time) have received reports of falling rubble (lapilli)

• All news about: Tungurahua volcano
• Information about: Tungurahua volcano

 

http://www.volcanodiscovery.com/tungurahua/news.html

•  

Edited April 5, 2014 by john pike

[john pike]

http://archive.volcanodiscovery.com/webcam/videos/489/video.mp4

[john pike]

Volcano Eruption in Russia [Asia] on Sunday, 06 April, 2014 at 12:22 (12:22 PM) UTC.

 

Volcano Shiveluch has erupted ash at an altitude of six kilometres above sea level in Russian Far Eastas Ust-Kamchatsky municipal entity, Kamchatka branch of the Russian Academy of Sciences geophysical service stated on Sunday. The ash plume has spread northwest of the volcano towards Bay Ozernoy not affecting any settlements, the Kamchatka territorial emergency situation department said. No threat exists for settlements. The volcano is ranked with orange aeronautical code of high eruption hazard.

 

http://hisz.rsoe.hu/alertmap/site/?pageid=event_desc&edis_id=VE-20140406-43271-RUS

[karyo]

Nice photos from yesterday's eruption  http://metro.co.uk/2014/04/05/tungurahua-volcano-spectacular-pictures-capture-eruption-in-ecuador-4689665/

 

Karyo

[john pike]

Nishino-shima volcano news & activity updates: Nishino-Shima volcano (Izu Islands, Japan): lava flows continue to enlarge island

Monday Apr 07, 2014 06:24 AM | BY: T

Aerial view of Nishinoshima on 24 March 2014 (Japan Coast Guard)

Enlarged section showing the active vent (cone 2, left) and the now inactive vent 1 (right cone)

Visible (l) and infrared ® landsat images from 30 March; the latter show the active flow fronts mainly on the eastern side of the island (white areas) (source: Culture Volcan)

The ongoing eruption continues to add new land to the island with what seems a relatively steady effusion of lava flows. A new overflight by the Japanese Coast Guard shows that at least the second vent that appeared in late January is still active, feeding lava flows that continue to spread and currently have active fronts all along the eastern coast.

The first original vent (cone 1, right in the picture) that build the new island and grew to a nice, symmetrical cone, seems to be inactive at present. The other vent is still active and has grown a bit since the previous overflight, with a crater that emits an ash and steam plume, presumably from mild explosive activity caused by infiltrating sea water that becomes in contact with the magma. Bluish gas on the pictures shows areas where active lava flows near their vents.

Landsat 8 infrared images from 30 March show that there are active flow fronts all along the eastern coast, while only 2 lobes are active towards the west.

[*]All news about: Nishino-shima volcano

[*]Information about: Nishino-shima volcano

[john pike]

Tjörnes Fracture Zone volcano

submarine volcano unknown summit elevation, North of Iceland, 66.3°N / -17.1°W

Nearby recent earthquakes (within 30km radius): Earthquake list: past 7 days (M>=-0. (163 quakes)

 

http://volcanodiscovery.com/tjoernes-fracture-zone-earthquakes.html

 

The offshore Tjörnes Fracture Zone is an oblique transform zone that separates the northern volcanic zone of Iceland from the Kolbeinsey Ridge, part of the Mid-Atlantic Ridge north of Iceland.

Background:

A submarine eruption was reported during 1867-1868 at the SE part of the fissure system off the northern coast of Iceland along the Manareyjar Ridge immediately north of Manareyjar Island

 

http://www.volcanodiscovery.com/tjoernes-fracture-zone.html

 

 

 

http://en.vedur.is/earthquakes-and-volcanism/earthquakes/tjornes-large/

 

plate or magma movement??

 

hard to know for sure at present but will update if more info comes in