Volcanic activity worldwide 31 Dec 2015: Santiaguito volcano, Fuego
Thursday Dec 31, 2015 21:00 PM |
Small explosion at Santiaguito on the morning of 28 Dec 2015
Santiaguito (Guatemala): (31 Dec) During our stay at / near Santa Maria volcano during 26-29 Dec, we observed only explosive activity at Santiaguito, but no signs of effusive activity (lava flows): no rockfalls or other movements were seen at the recently active lava flows or on the flanks of the dome itself, indicating that at present, no lava flows are active.
Strombolian eruption at Fuego last night
The volcano's activity consisted in explosions of varying size, at irregular intervals ranging between 10 minutes and 8 hours and producing ash plumes that rose up to 2-3 km above the Caliente dome. Sometimes, only loud, jet-engine like degassing events took place instead of ash explosions. These degassing events often lasted more than 10 minutes, while the explosions typically only took less than one minute.
Photos and impressions from our (still ongoing) tour will be posted in the New Year.
Fuego (Guatemala): (31 Dec) The activity at Fuego might be picking up towards a new paroxysm (eruptive phase with strongly increased effusion rate, resulting in lava fountaining and lava flows).
We camped on the SW side of the volcano last night, and observed mild to strong strombolian explosions that occurred at intervals between 1 and 10 minutes. The strongest explosions sent incandescent material to heights of up to approx. 500 m and similar distances. One particularly intense explosion was accompanied by a very strong shock wave.
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Wednesday, Dec 23, 2015
Pacaya (Guatemala): (23 Dec) During our visit at the volcano this morning, the first direct observation of the crater was possible following a period of 5 days of bad weather. When we climbed the crater rim, we observed violent, continuous lava spattering from the central vent on an intra-crater cinder cone inside Mackenney crater. ... [meer...]
Saturday, Dec 19, 2015
Sinabung (Sumatra, Indonesia): (19 Dec) The eruption, characterized by slow extrusion of viscous lava, continues well into its second year. During the past days, incandescent avalanches, but also explosions (from pressurized gas-rich magma) have occurred, producing small to moderate ash plumes rising up to 2-3 km. ... [meer...]
Thursday, Dec 17, 2015
Wednesday, Dec 16, 2015
Monday, Dec 14, 2015