Analysis of Three Components Waveform to Invert The Moments Tensor of Earthquakes in Java 2010

The island of Java is an earthquake-prone area. In the last five years IRIS recorded around 294 earthquakes in Indonesia, 28 of which occurred on Java Island. Waveform analysis using three-component seismogram is performed to obtain the moment tensor and to determine the pattern of subduction fault area in the Java Island. This study begins by requesting several earthquake events during 2010 from the BMG-Net, Geofon webpage. Later, the ISOLA software was used to make conversion and pre-processing data, with the program’s input data includes: crustal model, event info, choosing the stations, the preparation of raw data, and determines the seismic source, calculates the Green function, conducting the inversion and plots the inversion results. Then describe the Fault-Plane that caused the earthquake using hcplot software. The results of analysis show that the fracture patterns that develop in Java are a normal faults and reverse faults parallel to the island arc.