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PHIVOLCS Observatory at Mount Hibok-Hibok.. The Philippine Institute of Volcanology and Seismology (PHIVOLCS, Tagalog:; Tagalog: Surian ng Pilipinas sa Bulkanolohiya at Sismolohiya) is a Philippine national institution dedicated to provide information on the activities of volcanoes, earthquakes, and tsunamis, as well as other specialized information and services primarily for the protection of ...
The PHIVOLCS earthquake intensity scale ( PEIS; Filipino: Panukat ng Pagyanig ng Lindol) [1] is a seismic scale used and developed by the Philippine Institute of Volcanology and Seismology (PHIVOLCS) to measure the intensity of earthquakes . It was developed as upon a specific response to the 1990 Luzon earthquake.
PHIVOLCS recorded 8,403 aftershocks, and within 27 days of the earthquake, 425 aftershocks above M w 4.5 were recorded by the USGS; the aftershock sequence occurred southeast of the mainshock. The largest aftershock, measuring 6.9 struck on December 4, occurring north of the aftershock sequence near Cagwait. However, PHIVOLCS said that it was a ...
By 2:30 pm, PHIVOLCS raised the alert status to Alert Level 2, although PHIVOLCS through its Taal Volcano Observatory had advised residents of Volcano Island to evacuate at around 1 pm. Stronger explosions began around 3 pm that spewed an ash column exceeding a kilometer high, prompting PHIVOLCS to upgrade the alert status to Alert Level 3 by 4 ...
Mayon is the main landmark and highest point of the province of Albay and the whole Bicol Region in the Philippines, rising 2,463 meters (8,081 ft) from the shores of Albay Gulf about 10 kilometers (6.2 mi) away. [9] [10] The volcano is geographically shared by the eight cities and municipalities of Legazpi, Daraga, Camalig, Guinobatan, Ligao ...
Mount Pinatubo [4] is an active stratovolcano in the Zambales Mountains, located on the tripoint boundary of the Philippine provinces of Zambales, Tarlac and Pampanga, all in Central Luzon on the northern island of Luzon. [5] [6] Its eruptive history was unknown to most before the pre-eruption volcanic activity of early 1991.
Raymundo Punongbayan. Dr. Raymundo Santiago Punongbayan (13 June 1937 – 28 April 2005) was the former director of the Philippine Institute of Volcanology and Seismology (PHIVOLCS) from 1983 to 2002. Punongbayan became popular after handling two well-known calamities, the 1990 Luzon earthquake and the 1991 Pinatubo eruption.
1 dead. On August 12, 2021, at 01:46:12 PST, a strong M w 7.1 earthquake struck the island of Mindanao at a depth of 55.1 kilometers (34.2 mi). It had a maximum perceived Intensity V on the PHIVOLCS Earthquake Intensity Scale. [1] No damage or injuries were reported but a young man was killed by the earthquake.