Tuesday 17 May 2016

Volcanos

Roundup of Global Volcanic Activity

Sinabung (Sumatra, Indonesia): Two small to moderately sized pyroclastic flows occurred this morning at the volcano. The larger one at 06:16 local time (image) produced a pyroclastic flow that traveled 2700 m on the SE side and a co-ignimbrite ash plume that rose 2500 m into the sky.

Santiaguito (Guatemala): The activity at the Caliente lava dome remains very elevated: a series of 3 powerful explosions occurred this morning (around 07:45 local time), yesterday evening (17:45) and Saturday morning. The eruptions produced ash plumes that rose 3-4 km above the dome and multiple pyroclastic flows that traveled up to 2 m length mainly on its southern and eastern sides. Moderate to heavy ash fall occurred in areas south-west of the dome complex, including the towns and villages of Nuevo Palmar, San Felipe Retalhuleu, Aldea Loma Linda, San Marcos Palajunoj El Patrocinio and others. According to INSIVUMEH, the explosion sounds could be heard up to 30 km away and ballistic ejecta (blocks and volcanic bombs) landed in up to 3 km distance. The current phase of activity has been the highest recorded at the volcano since at least 2 years.

Turrialba (Costa Rica): A new phase of ash emissions seems to be in progress at the volcano (which itself has been in clouds, preventing direct observations). Starting 11:58 local time, an increase of tremor was noted and later on, ash fall has been noted in nearby downwind areas (to the NE).

No comments:

Post a Comment