Last week, the agency unveiled its borehole seismic station, the 13th in the network of seismic monitoring stations in Taal volcano and the first of its kind in the Philippines. This minimizes unnecessary noise recorded during ground movements, Phivolcs said. In a briefing, Solidum said the borehole station gave Phivolcs a “larger coverage and higher accuracy” in monitoring Taal’s volcanic activities. Tanauan City, which sits on the Taal caldera, was a vital location for the seismic station, he said. The 1911 and 1965 eruptions caused base surges, or the horizontal flow of pyroclastic materials across the lake and ground, Phivolcs said.

Source: Philippine Daily Inquirer February 26, 2019 19:30 UTC