Volcanic activity worldwide 20 Aug 2013: White Island, Iliwerung
Tuesday Aug 20, 2013 17:04 PM |
Iliwerung (Lesser Sunda Islands): A submarine eruption has likely occurred this morning in Indonesia. VSI raised the alert level of Iliwerung volcano from 1 (normal) to 2 (watch) following increased seismic and visual activity from an underwater flank vent called Gunung Hobal.
Phreatic explosion at White Island this morning (GeoNet webcam)
Iliwerung volcano forms a peninsula on the south coast of Lembata (Lomblen) Island (East Indonesia). Mount Hobal (Gunung Hobal) is a submarine flank vent of Iliwerung located about 800 m from the coast. It has had several historic eruptions during which several temporary islands were formed.
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White Island (New Zealand): A small phreatic or hydrothermal eruption occurred at in the active crater earlier today (10:23 on Tuesday 20 August 2013 NZ local time). The explosion lasted for about 10 minutes and produced a steam plume mixed with small amounts of ash that rose about 4 km a.s.l.
The activity at White Island has now returned to levels of high hydrothermal activity as before this morning's eruption.
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Monday, Aug 19, 2013
Saturday, Aug 17, 2013
Kverkfjöll (Eastern Iceland): A small phreatic eruption seems to have taken place yesterday at the ice-covered Kverkfjoell central volcano. The steam-driven (no fresh magma involved) explosion followed a small glacial flood on 15 August the Kverkjökull glacier released into the Volga river and was probably a result of the pressure release during the flood. ... [more]
Friday, Aug 16, 2013
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Wednesday, Aug 14, 2013
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Tuesday, Aug 13, 2013
El Hierro (Canary Islands, Spain): The number of earthquakes has increased from averages of 5-10 to about 30 during the past few days. The location of the recent quakes is in a N-S elongated layer about 10-12 km depth in the western part of the island under the El Golfo bay. So far, no quakes above magnitude 3 have occurred. ... [more]