One dimensional P wave velocity structure of the crust beneath west Java and accurate hypocentre locations from local earthquake inversion

A one-dimensional (1-D) velocity model and station corrections for the West Java zone were computed by inverting P-wave arrival times recorded on a local seismic network of 14 stations. A total of 61 local events with a minimum of 6 P-phases, rms 0.56 s and a maximum gap of 299 Degree-Sign were sele...

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Bibliographic Details
Main Authors: Supardiyono, Santosa, Bagus Jaya, Physics Department, Faculty of Mathematics and Natural Sciences, Sepuluh Nopember Institute of Technology, Surabaya
Format: Conference Proceeding
Language:English
Subjects:
COMPARATIVE EVALUATIONS
CORRECTIONS
EARTH CRUST
EARTHQUAKES
GEOPHYSICS
GEOSCIENCES
JAVA
MATHEMATICAL MODELS
ONE-DIMENSIONAL CALCULATIONS
SEISMIC P WAVES
SEISMOLOGY
VELOCITY
ZONES
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Summary:A one-dimensional (1-D) velocity model and station corrections for the West Java zone were computed by inverting P-wave arrival times recorded on a local seismic network of 14 stations. A total of 61 local events with a minimum of 6 P-phases, rms 0.56 s and a maximum gap of 299 Degree-Sign were selected. Comparison with previous earthquake locations shows an improvement for the relocated earthquakes. Tests were carried out to verify the robustness of inversion results in order to corroborate the conclusions drawn out from our reasearch. The obtained minimum 1-D velocity model can be used to improve routine earthquake locations and represents a further step toward more detailed seismotectonic studies in this area of West Java.
ISSN:0094-243X
1551-7616
DOI:10.1063/1.4730712