VOLCANO DEFORMATION AND MODELING ON ACTIVE VOLCANOES IN THE PHILIPPINES FROM ALOS INSAR TIME SERIES

摘要

Bulusan, Kanlaon, and Mayon volcanoes have eruptedrnover the last decade, and Taal caldera showed signs ofrnvolcanic unrest within the same time range. Eruptionsrnat these volcanoes are a threat to human life andrninfrastructure, having over 1,000,000 people livingrnwithin 10 km from just these 4 volcanic centers. Forrnthis reason, volcano monitoring in the Philippines is ofrnextreme importance.rnWe use the ALOS-1 satellite from the JapanesernAerospace Exploration Agency (JAXA) to make anrnInSAR time series analysis over Bulusan, Kanlaon,rnMayon, and Taal volcanoes for the 2007-2011 period.rnTime-dependent deformation was detected at all of thernvolcanoes. Deformation related to changes inrnpressurization of the volcanic systems was found onrnTaal caldera and Bulusan volcanoes, with best fittingrnMogi sources located at half-space depths of 3.07 kmrnand 0.5 km respectively.