Volcanic activity worldwide 4 Nov 2014: Batu Tara volcano
mardi nov. 04, 2014 21:00 |
Incandescent rockfalls from the lava dome of Batu Tara this morning (photo: Galih / VolcanoDiscovery Indonesia)Batu Tara (Sunda Islands, Indonesia): The volcano continues to have frequent mild to very strong strombolian, sometimes small vulcanian-type explosions, but also intermittent, short-lived effusive phases.
When observed during 1-4 Nov on our current volcano expedition, explosions occurred at intervals ranging from 5-30 minutes. A small lava dome-like structure is visible at and just below the rim of the active crater. Typically, before larger eruptions, the dome started to produce small rockfalls, presumably caused by small inflation as pressure built up. Several vents were active at the crater.
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lundi, nov. 03, 2014
Kilauea (Hawai'i): Over the past few days, there has been no advance of the lava flow front towards residences in Pahoa, though active lava continues to break out from the margins of the flow behind its farthest reach. Luckily no residences have burned so far because of this slow-down, but locals await the seemingly inevitable pressure surge which will come from somewhere on the flow in the near future. ... [details]
samedi, nov. 01, 2014
Turrialba (Costa Rica): According to the National Seismological Network (RSN), the sudden eruption of Turrialba last Wednesday night was the volcano’s largest in 150 years. Costa Rica-based online-newspaper ‘The Tico Times’ reports that it was a massive phreatic explosion that spewed out ash, rocks and possibly magma. Experts from the University of Costa Rica (UCR) and National University (UNA) reported increased seismic activity on Wednesday afternoon, culminating in explosive activity at 11:10 p.m. with the ash cloud from the explosion reaching several hundred meters. ... [details]
vendredi, oct. 31, 2014
Shishaldin (United States, Aleutian Islands): Eruptive activity at the volcano continues. Most of the time, it seems to be weak, probably strombolian in nature, but there have been episodes with more intense activity, possibly lava fountaining, evidenced by strong tremor and elevated surface temperatures. ... [details]
Volcanic activity worldwide 30 Oct 2014: Stromboli volcano, Popocatépetl, Bardarbunga, Turrialba, K...
jeudi, oct. 30, 2014
Stromboli (Eolian Islands, Italy): (30 Oct) The effusive eruption that had started on 7 August seems to be ending: the lava flow emitted from the 650 m vent at the eastern base of the summit crater complex has decreased a lot two days ago and seems to have almost (or completely) stopped by today. ... [details]
mercredi, oct. 29, 2014
Kilauea (Hawai'i): According to the latest report, the lava flow front is now 280 m/yds from Pahoa Village Road, averaging about 10 m/yds per hour. Lava has already consumed a few small agricultural structures, and there are perhaps 10-15 residences in its direct path on both sides of the road. Residents have been placed on an "evacuation notice" without being forced to leave, so that they can see what happens to their property and hopefully bring some emotional closure to the ordeal. ... [details]