Source of the 2019 M_(W)6.9 Banten Intraslab earthquake modelled with GPS data inversion  

作　　者：Satrio Muhammad Alif Erlangga Ibrahim Fattah Munawar Kholil Ongky Anggara 

机构地区：[1]Geomatics Engineering,Institut Teknologi Sumatera,Indonesia [2]Geophysics Engineering,Institut Teknologi Sumatera,Indonesia [3]Geospatial Information Agency,Indonesia

出　　处：《Geodesy and Geodynamics》2021年第4期308-314,共7页大地测量与地球动力学（英文版）

基　　金：funded by the Ministry of Research and Technology 2020 Research Grant Fund No.B/201/IT9.C1/PT.01.03/2020。

摘　　要：The 2019 M_(W)6.9 Banten Intraslab earthquake occurred at~100 km to the northeast of the Sunda Trench with two nodal plane models estimated by the Global Centroid-Moment-Tensor(GCMT)Project with a strike of 200°and a dip of 65°.Continuous GPS data from 11 GPS sites were used to model the source of the earthquake in three-components.The coseismic displacements and its uncertainties are obtained from the coordinates of these GPS sites from 7 days before to 7 days after the earthquake.The coseismic slip is the inversion result of those displacements based on the best fit in an elastic half-space.The maximum displacement is~5 cm with a large uncertainty that is comparable to the amplitude of displacement.A seismic moment of the best model(strike of 65°and dip of 54°)is 2.79×10^(19) Nm or equivalent to M_(W)6.89.The fault model of the earthquake is highly presumed as a continuation of Sumatran Fault Zone.

关 键 词：Coseismic slip Intraslab earthquake GPS data Sunda strait Stress transfer 

分 类 号：P315.7[天文地球—地震学]