Tuesday 15 October 2013

Volcanos

Roundup of Global Volcanic Activity:

Klyuchevskoy (Kamchatka): KVERT reported a small decrease in activity, although it seems during the past hours (after the report) to have increased again (see video below). The activity in any case can be considered high. An ash plume rises to up to 26,200 ft (8 km) a.s.l. and extends to the east-north-east of the volcano. Phreatic explosions (due to lava-snow interaction) at the south-western flanks of the volcano continue. Lava flows, fed by fountaining at the summit effuse on the south-western, western and south-eastern volcanic flanks.

Kizimen (Kamchatka): VAAC Tokyo reported an ash plume drifting at 13,000 ft (4 km) altitude from the volcano this morning at 05:28 UTC. Webcam images show a sustained steam-gas plume that might contain some ash. Glow from the summit lava dome can be seen on night-time images, indicating that lava extrusion continues.

Shiveluch (Kamchatka): The lava dome has become more active again, and frequently produces small incandescent avalanches. Strong degassing and occasional ash venting accompany this process. A weak ash plume rose today from the volcano to an altitude of about 12,000 ft.

Tangkubanparahu (West Java): No more eruptions have occurred since the series of 11 phreatic explosions between Saturday and Tuesday last week (5-8 Oct), but VSI continues to detect volcanic tremor. This suggests ongoing internal movements of pressurized fluids that could lead to new explosions any time. An exclusion zone of 1.5 radius around the crater is maintained.

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