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Ubinas volcano (Peru): activity decreases

Mon, 28 Apr 2014, 15:13 | BY: T
Activity has decreased since 23 April: less and generally smaller explosions have occurred since, with a possible pause during 23-25 April when webcam images show no plume during daytime.
However, during that time the volcano continued to produce an abundant degassing plume that sometimes contained some ash.
Ash emissions reappeared on 25 April, but remain weak compared to earlier this month.
A newspaper reported that seismic activity also decreased. Peruvian volcanologists seem to think that the low visible activity is due to a currently open-conduit system that allows for effective degassing of arriving magma, without creating overpressure needed to cause explosions.

Previous news

Wed, 23 Apr 2014, 06:00

Ubinas volcano (Peru) - Smithsonian / USGS Weekly Volcanic Activity Report for 23 April-29 April 2014 (Continuing Activity)

IGP's Observatorio Volcanologico de Arequipa (IGP-OVA) and Observatorio Vulcanológico del INGEMMET (OVI) reported that during 23-28 April daily explosions at Ubinas generated ash plumes that rose 0.2-2.5 km above the crater and drifted in multiple directions, especially to the S, SE, and E. Ash fell in various towns downwind of the plumes including Querapi (4 km S), Ubinas (6.5 km SSE), Escacha, Yungas, and Chojata. Seismicity was at a low level; signals indicating magma ascent were absent. ... Read all
Sat, 19 Apr 2014, 07:22

Ubinas volcano (Peru): strong ash emission to 28,000 ft last night

MODIS hot spot at Ubinas (MODVOLC, Univ. Hawaii)
A relatively strong ash emission was reported from last night (19:00 local time), inferred by seismic and infrared data. Read all
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Ubinas volcano
Stratovolcano 5672 m (18,609 ft)
Peru, -16.36°S / -70.9°W
Current status: minor activity or eruption warning (3 out of 5) Ubinas volcano eruptions:
2014-16, 2009-2010, 2006-08, 1969, 1956, 1951, 1937, 1907, 1906, 1869, 1867, 1865, 1862, 1830, 1826(?), 1784, 1677, 1662, 1600, 1550 ± 50y
Typical eruption style
Explosive