The Causative Fault of the 2016 Mwp 6.1 Petermann Ranges Intraplate Earthquake (Central Australia) Retrieved by C- and L-Band InSAR Data

Remote Sensing

Simone Atzori¹  Christian Bignami¹  Salvatore Stramondo¹  Matteo Albano¹  Marco Polcari¹ 

[1] Istituto Nazionale di Geofisica e Vulcanologia, Via di Vigna Murata 605, 00143 Rome, Italy;

关键词: InSAR;    Sentinel-1;    ALOS-2;    Australia;    intraplate earthquake;    source modeling;    Petermann Ranges Orogen;    Woodroffe thrust;   

DOI  :  10.3390/rs10081311

来源: DOAJ

【 摘 要 】

On 21 May 2016, an Mwp 6.1 earthquake occurred along the Petermann Ranges in Central Australia. Such a seismic event can be classified as a rare intraplate earthquake because the affected area presents low seismicity, being at the center of the Indo-Australian plate. Also, the architecture and kinematics of shear zones in the Petermann Orogen are largely unknown. We used Sentinel-1 C-band descending data and ALOS-2 L-band ascending data to constrain the causative fault. Our analysis revealed that the earthquake nucleated along an unmapped secondary back-thrust of the main feature of the area, namely the Woodroffe thrust.

【 授权许可】

Unknown