Friday, 23 October 2015

Volcanos

Roundup of Global Volcanic Activity

Shiveluch (Kamchatka): A moderately sized pyroclastic flow as result of small collapse of part of the active lava dome occurred this afternoon (Kamchatka time), sending an ash plume to approx. 15,000 ft (4.5 km) altitude.

Sakurajima (Kyushu, Japan): The volcano has been relatively calm during the past weeks. JMA reported small explosions at the Showa crater during 13-16 October. The Alert Level remained at 3 (on a 5-level scale).

Batu Tara (Sunda Islands, Indonesia): Ash plumes from the volcano have become an almost daily observation on satellite data monitored by VAAC Darwin. This suggests that activity has picked up at the volcano (we will find out more when we are going there in November). This morning, a plume at 5,000 ft (1.5 km) altitude drifted 35 km W from the volcano.

Dukono (Halmahera): Ash emissions continue to be intense and near continuous. VAAC Darwin reported again an ash plume extending 50 km NW from the volcano this morning.

Piton de la Fournaise (La RĂ©union): According to local news, the eruption restarted today after 4 days of quiet. Observers detected minor strombolian activity from a small, 1 m diameter vent at the bottom of the large new cone. Small explosions every few seconds were seen sending lava bombs to a few tens of meters height, not surpassing the outer crater rim. According to volcano observatory, sporadic pulses of tremor have reappeared this morning since 7am local time. Whether this is just a weak after-play or the onset of a more significant eruptive phase of the latest eruption remains to be seen.

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