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Bulusan volcano

Updated: Nov 29, 2023 06:01 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: 1 Nov 2023 (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

No recent earthquakes

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, 1 Nov 2023, 15:00

Bulusan volcano (Luzon, Philippines) - Smithsonian / USGS Weekly Volcanic Activity Report for 25 October-31 October 2023 (New Activity / Unrest)

PHIVOLCS reported that increased seismicity at Bulusan that began on 14 October continued. The seismic network recorded a total of 121 volcanic earthquakes from 0500 on 14 October to 1500 on 25 October. Out of those, 37 were volcano-tectonic events associated with rock fracturing and were located at depths of 1-9 km beneath the NW and SE flanks of the volcano. ... Read all
Thu, 26 Oct 2023, 05:09

Bulusan volcano (Luzon Island, Philippines): volcanic-seismic unrest persists, alert status raised to Yellow

Earthquakes distribution at Bulusan volcano over the past two weeks (pink dots) and 24 hours (red dots )(image: PHIVOLCS)
The Philippine Institute of Volcanology and Seismology's (PHIVOLCS) seismic recordings continue to monitor the ongoing seismic unrest at the volcano. ... Read all
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