Poas volcano (Costa Rica) activity update: geyser activity from the 2011 lava dome
Wednesday Jan 04, 2012 01:01 AM | BY: T
Fieldwork at Poás on 16 December showed new geyser activity from a vent on the N flank of the lava dome that formed in 2011. A water-and-mud fountain rose 5-6 m high, flowed into the lake, and built a terrace along the S shore.
Gas-and-steam plumes rose from the lava dome.
(Smithsonian / USGS Weekly Volcanic Activity Report 28 December-3 January 2012)
Monday, Jan 02, 2012
Tuesday, Dec 20, 2011
The photo was taken in spring 2009 and shows an explosion from Stromboli's NE crater in the evening twilight. In the first half of 2009 in particular, this crater was in spectacular, vigorous activity. It had quickly built a tall cone, changing and dominating the crater terrace of Stromboli, and although more changes have happened, it is still one of the main features of the crater today. ... [more]
Monday, Dec 19, 2011
Millions of years ago, dense forests were growing on the slopes of the island of Lesbos. Sequoias reached enormous heights. Eventually, after a long repose interval, the volcanoes of the island became active again. One of the largest eruptions generated hot ash flow that engulfed once verdant mountain forests and buried them under many meters of hot ash. ... [more]
Sunday, Dec 18, 2011
Friday, Dec 09, 2011
If anyone is interested in joining a trip to Nicaragua to see Concepcion, Masaya (Night/Day), San Cristobal, Montotombo, Santa Clara, Telica, Cerro Negro, El Hoyo Volcanoes from 5th to 14th January 2012 please get in touch. Please note you need to be in good physical condition to do the tour as it is very active and not much rest time. [more]
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