MANILA, Philippines – Nine volcanic earthquakes were recorded by Taal Volcano’s seismic network during the past 24 hours, the Philippine Institute of Volcanology and Seismology (Phivolcs) said on Friday.
Phivolcs' findings also showed that there was a remarkable increase in carbon dioxide (CO2) concentration, which indicated "anomalous gas release from the magma at depth".
Phivolcs said the findings do not show an imminent eruption, but advised the public to strictly observe some safety precautions.
The general public was reminded that the main crater of Taal should remain strictly off-limits because of the possibility of sudden hazardous steam-driven explosions and the accumulation of high concentrations of toxic gases.
The northern portion of the crater rim in the vicinity of Daang Kastila trail may also be dangerous when steam emission is reactivated along existing fissures.
Inhaling CO2 gas can cause headache, dizziness, muscular weakness and fainting, according to Phivolcs. Breathing air with high CO2 concentration can be lethal to humans, animals and even cause damage to vegetation.
Permanent settlement on the island is strictly not recommended because the entire island is a Permanent Danger Zone (PDZ), said Phivolcs.
Activity in the volcano is being closely monitored by Phivolcs.