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Volcanic activity world-wide 26-28 October 2012: Kilauea, Popocatépetl, Fuego, Cleveland, Little Sitkin, Iliamna, Sheveluch, Karymsky, Klyuchevskoi, Kizimen, Gorely, Alaid, Havre

dimanche oct. 28, 2012 09:39 | AUTEUR : T

The lava lake at Kilauea volcano on Hawai'i within Halema‘uma‘u crater remains at high levels, althouth the inflation-deflation cycle has now entered deflation and the lake level has slightly dropped. Elevated earthquake activity continues to appear beneath the upper eastern rift zone.
Lava flows southeast of Pu`u `O`o are weakly active on the coastal plain. Seismic tremor levels were low, and gas emissions were elevated, which are also visible on the latest NOAA SO2 satellite image.

In Mexico, Popocatépetl's activity has increased again with about 2-3 explosions per hour. Some of these produce ash clouds rising up to 2 km height. An explosion during the night of 25-26 Oct ejected numerous incandescent bombs to the upper outer flanks of the volcano.

Fuego volcano has mainly had effusive activity the past days with the lava flow towards the Ash Canyon increasing in length again to now about 600 m.

During 25-26 Oct, Sakurajima volcano had 2 relatively strong explosions sending ash to more than 3 km altitude (10-11,000 ft).

Elevated surface temperatures were detected at Cleveland volcano in the Aleutian Island, perhaps related to a new phase of lava dome growth.

Seismic activity remains elevated at Iliamna and Little Sitkin volcano, but there have not been any other signs of activity recorded.

In Kamchatka, Sheveluch volcano's lava dome continues to grow slowly and explosions could occur any time.
According to video data, the volcano is steaming and there is incandescence above the dome. Seismicity is moderate, and satellite data show a thermal anomaly.

A hot spot continues to be visible at Karymski volcano, seismicity is moderate and KVERT reports a possible small eruption with ash to 3,000 ft / 4 km altitude yesterday.

Moderate seismicity, a visible weak steam plume and a thermal anomaly detectable on satellite data suggest that mild strombolian activity continues in the summit crater of Klyuchevskoi volcano.

A thermal anomaly remains visible at Bezymianny although KVERT has not detected seismic activity recently.

Activity at Kizimen has decreased over the past weeks, but incandescence, steaming and moderate seismicity continue to be registered, confirming that the lava dome remains active.

Gorely is steaming, has a thermal anomaly and moderately elevated seismicity.

Alaid volcano in the Northern Kuriles continues to show a thermal hot spot and steaming could be observed from neighboring Paramushir Island.

The submarine eruption of Havre Seamount in the Kermandec archipelago discovered 9 Aug has been confirmed by direct observation. NZ scientists used multibeam sonar to map the seamount and found evidence of a new volcanic cone, 240 m tall and reaching withing 1,100 m below sea level, built on the side of the large submarine caldera of Havre volcano.
Actualités précédentes
jeudi, oct. 25, 2012
There has not been happening much in the volcano world these days. ... [details]
mercredi, oct. 24, 2012
Within the past few days, the lava lake at Kilauea volcano on Hawai'i within Halema‘uma‘u crater has risen to a record levels. 1 year ago the lake was 70m/230ft deep, 1 month ago it was 60m/200ft deep, 1 week ago it was 50m/165ft deep, and today it sits only 33m/110ft deep! ... [details]
dimanche, oct. 21, 2012
A strong seismic swarm is in progress at the Tjörnes Fracture Zone just north off Iceland. The largest event was a felt magnitude 5.2 quake at about 10 km depth. ... [details]
jeudi, oct. 18, 2012
Thermal anomalies are visible at Ibu volcano (Halmahera, Indonesia), suggesting eruptive activity at the summit, possibly related to lava dome growth in the wide summit crater that has been documented since 2000. ... [details]

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