The Taal Volcano continues to spew ash as seen from Tagaytay, Philippines, January 17, 2020.
(Photo : REUTERS/Eloisa Lopez)

Taal Volcano belched smaller plumes of ash on Thursday, but seismologists said that did now not mean the volcano became calming down because it constantly shuddered with earthquakes and cracked the floor in close by cities-signs that it changed into building up energy for a catastrophic eruption.

The Philippine Institute of Volcanology and Seismology (Phivolcs) said intense volcanic earthquakes and excessive stages of sulfur dioxide emissions are symptoms that magma, or molten rock, is shifting up and will burst out of the volcano at any moment.

"We are still studying what this lull period means," Maria Antonia Bornas, Phivolcs chief science studies specialist, told reporters.

"A long lull might be just a break from its volcanic activity. The hazard remains," she said.

Long silence

"It's common in volcanic eruptions that there are intervals of a lull, specifically for Taal, like during its prolonged eruption in 1754," Bornas stated.

After a protracted silence, Taal erupted for seven months that year, burying four towns in Batangas beneath ash and rocks, changing the view of the province.

Born as said the current lull might go both ways.

"If it continues, then it's good. We can be able to stand down," she said. However, the lull could be just a resting section for the volcano to go into a brand new cycle of explosive activity if it prolongs.

No new fissures 

Taal shot weak, steam-encumbered plumes up to 900 miles into the sky and crackled with nine "discrete weak explosions" on Thursday, Phivolcs said, noting that the volcano's activity had "normally waned."

Phivolcs Director Renato Solidum said no new fissures had been noted on Thursday; however, the water in Taal Lake was receding at Alitagtag, Laurel, Lemery, and Talisay towns of Batangas province.

Phivolcs on Wednesday said that Taal's main crater lake, near Pansipit River, had dried up - a signal of the volcano's persevering with restiveness.

On Thursday, some citizens took advantage of what they perceived as a lull within the activity of Taal, the country's second most active volcano, to go back to their homes within the 14-kilometer radius danger zone to retrieve belongings and feed pets and farm animals.

Permanent danger zone

The National Disaster Risk Reduction and Management Council mentioned more than 65,000 people were displaced by the eruption in the provinces of Batangas and in Cavite. The motive for the discrepancy turned into now not straight away clear.

Mark Timbal, from National Disaster Risk Reduction Management Council in the Philippines, told Al Jazeera that vegetation and animal life in Taal was dead, burned by the heat.

Authorities are getting ready for two excessive worst-case scenarios: One in which the eruption could take region over some days and any other wherein the eruption lasts for weeks.

"It might be short long," Philvocs volcano expert Bornas said, comparing Taal's maximum latest volcanic pastime with previous eruptions.

Taal erupted over a period of three days in January 1911. The volcano erupted over a period of seven months in 1754.

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