MANILA (DWDD) – The Philippine Institute of Volcanology and Seismology (PHIVOLCS) of the Department of Science and Technology (DOST) displays the Sequence of Tephra Fall Deposit from Taal Volcano as part of its exhibit at the 2017 National Science and Technology Week held at the World Trade Center last week.
Tephra is a Greek term for ash and a generic word used to describe any airborne pyroclastic accumulation which is unconsolidated. Tephra is classified into three kinds: ash which is fine grain, lapilli which is pea-to-walnut size of from 2 to 64mm and the blocks and bombs which are incandescent lava fragments with size of more than 64mm that are semi-molten when airborne.
The exhibit, dubbed “#handatayo”, is part of DOST’s disaster preparedness cluster. #ScienceforthePeople #2017nstw #dostPH. DOST / Photo by Rodolfo P. de Guzman / S&T Media Service / MCAG