MANILA, Philippines – Residents living in areas surrounding Taal Volcano have reported feeling earthquakes since Sunday, January 12.
These volcanic earthquakes are different from tectonic earthquakes. The tectonic earthquakes are usually larger and caused by "movement of plates when energy accumulated within plate boundary zones is released," according to the University of the West Indies' Seismic Research Center.
Volcanic earthquakes, meanwhile, are usually small but become more frequent as unrest intensifies.
Earthquakes and eruptive activities
In an interview with CNN Philippines, Phivolcs chief Renato Solidum said that the public may expect more activities from Taal Volcano due to the increasing number of earthquake events.
At least 49 volcanic earthquakes were recorded in the area of Taal from 2-10 am on Tuesday, January 14 alone.
From 1 pm Sunday, January 12, to 2 am of January 14, the Philippine Seismic Network recorded 212 volcanic earthquakes. At least 81 quakes were "felt with intensities ranging from Intensity I to V."
"Such intense seismic activity probably signifies continuous magmatic intrusion beneath the Taal edifice, which may lead to further eruptive activity," Phivolcs said in a bulletin.
The number of evacuees has reached more than 24,000, with many still living in fear over their livelihoods and homes, among others. (READ: 'Lubog na lahat': Calawit residents return to crushed homes) – Rappler.com
Read Rappler explainers on Taal Volcano:
Jodesz Gavilan is a writer and researcher for Rappler and its investigative arm, Newsbreak. She covers human rights and also hosts the weekly podcast Newsbreak: Beyond the Stories. She joined Rappler in 2014 after obtaining her journalism degree from the University of the Philippines.