Characteristics of the Seismogenic Faults in the 2018 Lombok, Indonesia, Earthquake Sequence as Revealed by Inversion of InSAR Measurements

Wang, Chisheng1,2; Wang, Xinyu1,2; Xiu, Wenqun3; Zhang, Bochen4; Zhang, Guohong5; Liu, Peng6,7

2020-03

10.1785/0220190002

SEISMOLOGICAL RESEARCH LETTERS   影响因子和分区

0895-0695

1938-2057

We invert Interferometric Synthetic Aperture Radar observations for the slip models of the 28 July M-w 6.4, 5 August M-w 6.9, and 19 August M-w 6.9 earthquakes in the 2018 Lombok earthquake sequence. The geodetic measurements and aftershock distribution suggest three south-dipping fault planes with shallow depths for the three events. They are likely associated with the imbricate thrust faults above the main Flores fault. Obvious strike and dip differences were found on the seismogenic faults, which implies probable fault segmentation and explains the cascading fault behaviors with moderate magnitudes. The three events peaked at depths of 12.38, 16.9, and 25.9 km. The estimated moments reach 7.59 x 10(18,) 3.33 x 10(19), and 4.61 x 10(19) N.m, equal to M-w 6.52, M-w 6.95, and M-w 7.04 events, respectively. The derived slip distribution covers most of the area in the Lombok fault plane. Future seismic hazard on the seismic gap to the east of Lombok should be noted.

SCI ; EI

英语

其他

Open Fund of the State Key Laboratory of Earthquake Dynamics[LED2016B03]

Geochemistry & Geophysics

Geochemistry & Geophysics

WOS:000518383600019

SEISMOLOGICAL SOC AMER

20203409077806

Earthquakes ; Fault slips

Seismology:484 ; Earthquake Measurements and Analysis:484.1 ; Radar Systems and Equipment:716.2

GEOSCIENCES

Web of Science

1.Shenzhen Univ, Sch Architecture & Urban Planning, Guangdong Key Lab Urban Informat, Shenzhen, Peoples R China
2.Shenzhen Univ, Sch Architecture & Urban Planning, Guangdong Lab Artificial Intelligence & Digital E, Shenzhen, Peoples R China
3.Shenzhen Urban Publ Safety & Technol Inst, Shenzhen, Peoples R China
4.Hong Kong Polytech Univ, Dept Land Surveying & Geoinformat, Hong Kong, Peoples R China
5.China Earthquake Adm, State Key Lab Earthquake Dynam, Inst Geol, Beijing, Peoples R China
6.Southern Univ Sci & Technol, Acad Adv Interdisciplinary Studies, Shenzhen, Peoples R China
7.Southern Univ Sci & Technol, Dept Earth & Space Sci, Shenzhen, Peoples R China

Wang, Chisheng,Wang, Xinyu,Xiu, Wenqun,et al. Characteristics of the Seismogenic Faults in the 2018 Lombok, Indonesia, Earthquake Sequence as Revealed by Inversion of InSAR Measurements[J]. SEISMOLOGICAL RESEARCH LETTERS,2020,91(2):733-744.

Wang, Chisheng,Wang, Xinyu,Xiu, Wenqun,Zhang, Bochen,Zhang, Guohong,&Liu, Peng.(2020).Characteristics of the Seismogenic Faults in the 2018 Lombok, Indonesia, Earthquake Sequence as Revealed by Inversion of InSAR Measurements.SEISMOLOGICAL RESEARCH LETTERS,91(2),733-744.

Wang, Chisheng,et al."Characteristics of the Seismogenic Faults in the 2018 Lombok, Indonesia, Earthquake Sequence as Revealed by Inversion of InSAR Measurements".SEISMOLOGICAL RESEARCH LETTERS 91.2(2020):733-744.