Mount Bulusan
| Bulusan Volcano | |
|---|---|
| Mount Bulusan | |
Bulusan volcano seen here from the west
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| Highest point | |
| Elevation | 1,565 m (5,135 ft) |
| Prominence | 1,547 m (5,075 ft) |
| Listing | Ultra |
| Coordinates | 12°46′12″N 124°03′00″E / 12.77000°N 124.05000°ECoordinates: 12°46′12″N 124°03′00″E / 12.77000°N 124.05000°E |
| Geography | |
.svg)
 Bulusan Volcano
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| Location | Luzon |
| Country | Philippines |
| Region | Bicol Region |
| Province | Sorsogon |
| Municipalities | |
| Geology | |
| Mountain type | Stratovolcano |
| Last eruption | Ongoing |
Mount Bulusan, or Bulusan Volcano, is the southernmost volcano on Luzon Island in the Republic of the Philippines. It is situated in the province of Sorsogon in the Bicol region, 70 km (43 mi) southeast of Mayon Volcano and approximately 250 km (160 mi) southeast of the Philippine capital of Manila.
It is one of the active volcanoes in the Philippines.
Bulusan is classified by volcanologists as a stratovolcano (or a composite cone) and covers the northeast rim of Irosin caldera that was formed about 40,000 years ago. It has a peak elevation of 1,565 m (5,135 ft) above sea level with a base diameter of 15 km (9.3 mi).
Located around the mountain are four craters and four hot springs. The first crater, called Blackbird Lake, is 20 m (66 ft) in diameter and 15 m (49 ft) deep. The second crater is oval, with dimensions of 60 by 30 m (197 by 98 ft) and 15 m (49 ft). The third crater is about 90 m (300 ft) in diameter and 20 m (66 ft) deep, while the fourth, which is near the northeastern rim opened during the 1981 eruption. There is also a 100-metre (330 ft) fissure measuring 5 to 8 m (16 to 26 ft) wide below this crater.
Its hot springs are San Benon Springs, Mapaso Springs, San Vicente Springs, Masacrot Springs.
Its adjacent volcanic edifices are Mt. Homahan, Mt. Binitacan, Mt. Batuan, Mt. Calungalan, Mt. Calaunan, Mt. Tabon-Tabon, Mt. Juban, and Mt. Jormajan.
Bulusan is generally known for its sudden steam-driven or phreatic explosions. It has erupted 15 times since 1885 and is considered as the 4th most active volcano in the Philippines after Mayon, Taal, and Kanlaon.
There are evacuation procedures in place for parts of the peninsula; the farms nearest the volcano are to be evacuated, and many of the village schools will be closed if it is considered possible that a more destructive eruption could occur.
The Philippine Institute of Volcanology and Seismology (PHIVOLCS) declared Alert Level 1 on March 19, 2006 after it recorded increased seismic unrest. On June 8, 2006, volcanologists raised the Alert Level to 2 (moderate level of seismic unrest) after it spewed ash. On June 9, the resulting ash cloud damaged a number of houses in the nearby town of Casiguran, 5 kilometers (3.1 mi) north of the volcano, and reached Sorsogon City, about 20 kilometers (12 mi) north of Bulusan.
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Wikipedia