Combined hazard map layers showing the areas at risk of volcanic tsunami, base surge and ballistic projectiles from Taal Volcano's hazardous eruption.
GeoRisk
Maps of areas in immediate danger from a hazardous Taal eruption
(Philstar.com) - January 13, 2020 - 1:38pm

Maps released by state volcanologists show the extent of possible hazards that accompany a dangerous eruption of Taal Volcano in Batangas that may occur anytime following PHIVOLCS' raising of Alert Level 4 on Sunday.

The looming hazardous eruption that may originate anywhere within the volcano island may involve "flows of ashes, rocks, gas at speeds of more than 60 kph horizontally," as top state seismologist Renato Solidum explained.

The maps can also be generated using an online tool under the Department of Science and Technology. They mark zones that may be immediately affected by at least three volcanic hazards. They also show areas within the 14-kilometer radius from the volcano's crater where residents were forced to evacuate.

Volcanic tsunami

Taal's eruption can trigger explosions and shock waves underwater that may then push large amounts of water surrounding the volcano to the shoreline.

Taal hazard zone: Volcanic tsunami
GeoRisk
Taal hazard zone: Volcanic tsunami
PHIVOLCS

The PHIVOLCS map also shows the area (in yellow) where the ground can crack from the fissuring and oscillation.

Base surge

This shows the possible reach of dangerous, turbulent cloud of hot gases and debris, destroying whatever is in the way at high speed. This rushing current involves a mix of hot lava, rocks, ash, volcanic gas and pumice moving down the volcanic slope.

Taal hazard zone: Base surge
GeoRisk

The feared hazardous eruption may occur through any of the five vents, namely Taal Volcano Island Main Crater, Binintiang Malaki, Pirapiraso, Off-Calauit and Binintiang Munti.

Taal hazard zone: Base surge
PHIVOLCS

The estimates shown in the map are based on the reconstruction of events in 1754, the greatest recorded explosion of the volcano and which lasted seven months. This is considered the worst-case scenario today.

ALSO READ: Best- and worst-case scenarios: Taal eruption may last from days to months

The orange marker covers zones prone to base surge while the yellow market indicates the buffer zone, which is one kilometer from the base surge zone.

Ballistic projectiles

Areas within the zones are susceptible to the forceful ejection of volcanic materials such as hot rocks and falling fragments from the volcano's vent.

Taal hazard zone: Ballistic projectiles
GeoRisk
Taal hazard zone: Ballistic projectiles
PHIVOLCS

The blocks are hurled as forcefully as cannonballs and may fall 2-5 kilometers from the vent. — Camille Diola

HAZARD TAAL VOLCANO TAAL VOLCANO ERUPTION 2020
Philstar
  • Latest
  • Trending
Latest
Are you sure you want to log out?
X
Login

Philstar.com is one of the most vibrant, opinionated, discerning communities of readers on cyberspace. With your meaningful insights, help shape the stories that can shape the country. Sign up now!

FORGOT PASSWORD?
SIGN IN
or sign in with