Volcanic activity world-wide 21 August: Tungurahua, Cleveland, El Hierro, Popocatépetl, Fuego, Turrialba, Batu Tara, Sakurajima, Kamchatka
Tuesday Aug 21, 2012 17:40 PM | BY: T
Tungurahua volcano emits a near constant steam and ash plume rising on average 1.5 km with peaks of up to 4 km above the crater. This activity produces significant ash fall in areas west of the volcano. Intermittent explosions throw bombs to 500 m height and up to 1.5 km radial distance. A strong SO2 plume can be seen on satellite imagery.
A small explosive eruption ocurred at Cleveland volcano in the Aleutians on 19 August the Alaska Volcano Observatory reports.
At El Hierro island, only 5 more very weak quakes have been recorded today. It seems that the swarm is ending.
Popocatépetl in Mexico remains active at fuctuating intensity. Between 19-20 Aug, the number of weak explosions has further decreased to only one every 3 hours, but increased again to about 1 every hour during yesterday. The largest probably produced small ash plumes although no ash fall has been reported. The SO2 emission of the volcano remains impressive.
The lava flow from Fuego volcano has increased in length and now reaches 500 meters. Degassing sounds like from a locomotive are being heard, and intermittently there are weak strombolian explosions ejecting glowing bombs to 100 m above the crater.
An SO2 plume possibly from Turrialba volcano in Costa Rica could be seen on yesterday's NOAA SO2 monitoring image for Central America.
Batu Tara (Sunda Islands, Indonesia) produced its daily ash plume rising to 7,000 ft (2.1 km) altitude.
Sakurajima volcano produced 3 moderate explosions with maximum ash cloud heights reaching 3 km during the past 24 hours. We will now start listing the explosions in a table.
Short updates for Kamchatka's volcanoes:
Sheveluch volcano in Kamchatka remains relatively quiet. Moderate seismicity, gas-steam emission and hot avalanches were observed. Satellite data show a thermal anomaly over the volcano.
KVERT reports weak seismicity and weak steaming at Bezymianny volcano.
The lava flow from Kizimen volcano is still active and a thermal anomaly over the volcano is detected by satellite.
Gorely volcano: KVERT reports moderate seismicity and strong gas-steam emissions.
Tuesday, Aug 21, 2012
Dietmar and Marika returned from the trekking tour and sent us a few pictures and the following feedback about the tour. [more]
Monday, Aug 20, 2012
Sunday, Aug 19, 2012
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