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Bulusan volcano

Updated: Mar 2, 2024 08:04 GMT -
Stratovolcano 1565 m / 5,134 ft
Luzon Island, Philippines, 12.77°N / 124.05°E
Current status: restless (2 out of 5)
Last update: 31 Jan 2024 (Smithsonian / USGS Weekly Volcanic Activity Report)

Bulusan, one of the most active volcanoes in the Philippines, is Luzon's southernmost volcano. It lies at the SE end of the Bicol volcanic arc occupying the peninsula of the same name that forms the elongated SE tip of Luzon island.

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Typical eruption style: Explosive. In historic time, frequent small to moderate phreatic and phreatomagmatic ash eruptions. Mudflows from loose deposits on flank are often generated when heavy rains fall (e.g. during taifuns).
Bulusan volcano eruptions: 2016, 2015, 2011, Oct 2006-07, Mar-Jun 2006, 1994, 1988, 1983, 1981, 1979, 1978, 1933, 1928, 1918-22, 1916, 1894, 1892, 1889, 1886, 1852(?)

Latest nearby earthquakes

TimeMag. / DepthDistance/Location
Feb 22, 08:43 am (GMT +8)
Feb 22, 00:43 GMT

3.2

5 km
4.6 km (2.8 mi) to the S 4.5 km northeast of Irosin, Province of Sorsogon, Bicol, Philippines More

Background

Bulusan is a young andesitic volcano built upon the NE rim of an older dacitic-to-rhyolitic caldera, the 11-km wide Irosin caldera, which was formed about 35,000-40,000 years ago.
Bulusan is flanked by several other large intracaldera lava domes and cones, including the prominent Mount Jormajan lava dome on the SW flank and Sharp Peak to the NE. The summit of 1565-m-high Bulusan volcano is unvegetated and contains a 300-m-wide, 50-m-deep crater. Three small craters are located on the SE flank.
Many moderate explosive eruptions have been recorded at Bulusan since the mid-19th century.


See also: Sentinel hub | Landsat 8 | NASA FIRMS

Wed, 31 Jan 2024, 15:00

Bulusan volcano (Luzon, Philippines) - Smithsonian / USGS Weekly Volcanic Activity Report for 24 January-30 January 2024 (Continuing Activity)

In a special advisory, PHIVOLCS reported increased seismicity at Bulusan, characterized by a total of 126 volcanic-tectonic earthquakes recorded by the seismic network during 0000-2145 on 28 January. The events had magnitudes of 0.3-2.2 and were located at depths of 1-9 km beneath the N and NW flanks. Weak-to-moderate gas emissions rose from the summit crater and active vents, which drifted SW and NW. ... Read all
Wed, 24 Jan 2024, 15:00

Bulusan volcano (Luzon, Philippines) - Smithsonian / USGS Weekly Volcanic Activity Report for 17 January-23 January 2024 (Continuing Activity)

PHIVOLCS reported increased seismicity at Bulusan in a special advisory. The seismic network recorded a total of 91 volcanic-tectonic earthquakes, associated with rock fracturing, located at depths of 2-4 km beneath the SW flank from 0138 on 22 January to 0130 on 23 January. Gas emissions characterized as weak-to-moderate rose from the summit crater and active vents. ... Read all
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