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Free keywords:
tomography, seismicity, micro-earthquake, velocity
Abstract:
A total of 48 seismometers were deployed from October, 2012 to October 2013 around a geothermal field in the southern part of the Bandung basin region. A threshold time difference between S and P-wave was applied with an arrival time of less than three seconds. Otherwise, the waves were assumed as regional or teleseismic events. Then the P-and S-wave arrival times of events were carefully picked visually by eye. After this, the events were located. So far, 1,260 microearthquake events have been determined
using a nonlinear algorithm integrated in the seismotool. These events seem to concentrated around geothermal field. Seismic velocities from the 1-D model were used as input for the 3-D seismic tomography inversion to invert for 3-D Vp, Vs, and Vp/Vs ratio subsurface structures around this geothermal field.
