TY - JOUR
T1 - Crustal structure in the southern part of Central Java based on analysis of tele-seismic receiver function using a neighbourhood algorithm
AU - Ariyanto, P.
AU - Syuhada,
AU - Rosid, S.
AU - Anggono, T.
AU - Januarti, Y.
N1 - Funding Information:
This paper is a preliminary result of my master thesis. I am grateful to my supervisor Dr. Syuhada and Syamsu Rosyid Ph.D for their help and guide. This study is supported by LPDP and LIPI. We acknowledge to Agency for Meteorology, Climatology, and Geophysics (BMKG) and GFZ Potsdam for providing the data used in this study. We also acknowledge to R.B. Herrmann, Malcolm Sambridge and K.C. Eagar for providing softwares used in this study.
Publisher Copyright:
© Published under licence by IOP Publishing Ltd.
PY - 2018/3/19
Y1 - 2018/3/19
N2 - In this study, we applied receiver functions analysis to determine the crustal thickness, the ratio of Vp/Vs and the S wave velocity in the southern part of the Central Java. We selected tele-seismic data with magnitude more than 6 (M>6) and epicenter distance 30°-90° recorded from 3 broadband stations: UGM, YOGI, and WOJI station, as part of Indonesia-Geophone Network (IA-GE). Inversions were performed using nonlinear Neighborhood Algorithm (NA). We observed Ps phase conversion on the receiver functions corresponding to Moho depth at around 36-39 km. We also observed strong negative phase arrivals at around 10-12 s which might be associated with Indo-Australian subducting slab underneath the stations. The inversion results show the presence of low velocity zone with high Vp/Vs ratio (>1.78) in the middle crust around the study area which could be related to the Merapi-Lawu Anomaly (MLA).
AB - In this study, we applied receiver functions analysis to determine the crustal thickness, the ratio of Vp/Vs and the S wave velocity in the southern part of the Central Java. We selected tele-seismic data with magnitude more than 6 (M>6) and epicenter distance 30°-90° recorded from 3 broadband stations: UGM, YOGI, and WOJI station, as part of Indonesia-Geophone Network (IA-GE). Inversions were performed using nonlinear Neighborhood Algorithm (NA). We observed Ps phase conversion on the receiver functions corresponding to Moho depth at around 36-39 km. We also observed strong negative phase arrivals at around 10-12 s which might be associated with Indo-Australian subducting slab underneath the stations. The inversion results show the presence of low velocity zone with high Vp/Vs ratio (>1.78) in the middle crust around the study area which could be related to the Merapi-Lawu Anomaly (MLA).
UR - http://www.scopus.com/inward/record.url?scp=85045629769&partnerID=8YFLogxK
U2 - 10.1088/1742-6596/985/1/012018
DO - 10.1088/1742-6596/985/1/012018
M3 - Conference article
AN - SCOPUS:85045629769
SN - 1742-6588
VL - 985
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
IS - 1
M1 - 012018
T2 - 3rd International Symposium on Frontier of Applied Physics, ISFAP 2017
Y2 - 23 October 2017 through 24 October 2017
ER -