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Volcano Eruption in Indonesia – Slamet Volcano

2014/03/12

Volcanic Hazard in Indonesia on Tuesday, 11 March, 2014 at 11:06 (11:06 AM) UTC

Volcano Eruption
Indonesian Archipelago – Indonesia | West Java, Mount Slamet Volcano
Location: S 7° 14.400, E 109° 13.200

Current status: Minor activity or Eruption Warning 

New eruptions were observed at Java’s second highest volcano since yesterday evening. A series of explosions produced ash plumes rising 800-1000 m above the summit, the local observatory reported. This activity came after a steep increase in volcanic earthquakes from averages of approx 50 to more than 200 per day, volcanologist Mr Sudrajat from the local observatory told the press. The first explosion occurred Monday evening at 20:06, causing the glass windows of the observatory building to vibrate. Shortly after, the Center for Volcanology and Geological Hazard Mitigation (PVMBG) raised the status of Mount Slamet from normal to alert (2 on a scale of 1-4). According to local press, the vibration from the eruption could be felt in up to 10 km distance and described the plume as “thick smoke”. Slamet is one of Java’s most active volcanoes and often has strombolian to vulcanian-type activity in its summit crater.

Source: RSOE EDIS

 Latest Activity:

5 March-11 March 2014

PVMBG reported that seismicity at Slamet increased during 1-10 March, particularly during 8-10 March. Observers at a post in Slamet Gambuhan village, about 10 km away, noted that diffuse to dense white plumes rose as high as 600 m above the crater during 1-7 March, and as high as 1 km during 8-10 March. The Alert Level was raised to 2 (on a scale of 1-4) on 10 March; visitors and tourists were advised not to approach the crater within a radius of 2 km.

Source: Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG) also known CVGHM

Background:

Slamet has a cluster of about three dozen cinder cones on its lower SE-NE flanks and a single cinder cone on the western flank. The volcano is composed of two overlapping edifices, an older basaltic-andesite to andesitic volcano on the west and a younger basaltic to basaltic-andesite one on the east. Gunung Malang II cinder cone on the upper eastern flank on the younger edifice fed a lava flow that extends 6 km to the east. Four craters occur at the summit of Gunung Slamet, with activity migrating to the SW over time.

Historical eruptions, recorded since the 18th century, have originated from a 150-m-deep, 450-m-wide, steep-walled crater at the western part of the summit and have consisted of explosive eruptions generally lasting a few days to a few weeks.

Source: GVP

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