We investigated the crust and upper mantle of West Java, Indonesia by measuring the group velocity dispersion of surface waves. We analyzed waveform from four teleseismic earthquake recorded at three 3-component broadband seismometers. We analyzed fundamental mode of Rayleigh and Love waves from vertical, radial, and transverse components using multiple filter technique. We inverted the measured group velocity to obtain shear wave velocity profile down to 200 km depth. We observed low shear wave velocity zone at depth of about 20 km. Shear velocity reduction is estimated to be 18% compared to the upper and lower velocity layer. The low velocity zone might be associated with the subducting slab of Indo-Australian Plate as similar characteristics of low velocity zones also observed at other subducting regions.
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12 February 2016
INTERNATIONAL SYMPOSIUM ON FRONTIER OF APPLIED PHYSICS (ISFAP) 2015
5–7 October 2015
Bandung, Indonesia
Research Article|
February 12 2016
Shear wave velocity structure in West Java, Indonesia as inferred from surface wave dispersion
Titi Anggono;
Titi Anggono
a)
Research Center for Physics,
Indonesian Institute of Sciences
, Indonesia
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a)
Corresponding author: [email protected]
AIP Conf. Proc. 1711, 070006 (2016)
Citation
Titi Anggono, Syuhada; Shear wave velocity structure in West Java, Indonesia as inferred from surface wave dispersion. AIP Conf. Proc. 12 February 2016; 1711 (1): 070006. https://doi.org/10.1063/1.4941647
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