Analysis of Coulomb Stress of Sumatera Earthquake Against Pyroclastic Flow of Mount Sinabung as Data Prone Volcano Disaster

The islands of Sumatra and Sinabung are located southwest the Sundaland Continent which is a convergence route between Indian-Australian Plate that infiltrates to west Eurasian/Sundaland Plate. increase in activity Mount was preceded by large earthquakes south while eruption produced pyroclastics. purpose this study find out analysis coulomb stress from Island earthquake pyroclastic flow as data on volcanic disasters. This used method with 3.3. analyzed Mw, depth, focal mechanism. results form direction spread value increased 2014-2016. Sinabung's positive 2014 0.113 bar angle 90o against sinabung flow. 2015 0.235 2016 0.118 Coulomb affects prioclastic far 180o although it not same field. because peak has landslides southeast-south, thus opening road southeast-south.