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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.
Mayon is shared by eight cities and municipalities of Albay province. 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 ...
PHIVOLCS noted in a March 22 report that since January, earthquake clusters or occurrences had been recorded by the seismic monitoring network around the volcano. These earthquakes might had signified a reactivation of the volcanic system at depth and could be a precursor to more vigorous activity, such as ash explosions.
On August 11, 2021, PHIVOLCS downgraded Mt. Pinatubo's Alert Level 1 to Level 0, due to "continued decrease in earthquake activity and a return to baseline seismic parameters". PHIVOLCS said it noted a "significant decrease" in volcanic earthquakes, with a total of 104 quakes or an average 2 - 3 events per day recorded from July 1 - August 1, 2021.
The earthquake was recorded by the Philippine Institute of Volcanology and Seismology (PHIVOLCS) on February 10, 2017, at 10:03:42 PM (UTC+8). According to PHIVOLCS, the epicenter of the 6.7 magnitude -earthquake was at 9.80°N 125.35°E or 16 kilometers, north west of Surigao City. The earthquake was tectonic of origin.
United States Geological Survey shake map for the 2019 Luzon earthquake; a maximum Mercalli intensity scale value of 6.6 was observed in Gutad, Floridablanca, Pampanga. The Philippine Institute of Volcanology and Seismology (PHIVOLCS) initially reported an earthquake of magnitude 5.7 striking at 17:11 PST with an epicenter two kilometers N 28° E of Castillejos, Zambales.
The Philippine Institute of Volcanology and Seismology (PHIVOLCS) initially reported a magnitude 6.5 earthquake striking at 8:03 am Philippine Standard Time (PST) in Cataingan, Masbate. The report was later revised to a magnitude 6.6 earthquake. The earthquake was also felt in several parts of Luzon and the Visayas.