Fig. 1

a Distribution map of topography, fault, major historical earthquake and InSAR data in the Jiashi areas. The black beach balls are focal mechanism solutions of the historical earthquake from the GCMT catalog. The red star marks the epicenter of the Jiashi earthquake from CENC. The green box is the coverage of Sentinel SAR data. The blue dots represent the major cities. The black lines are faults that are from the display system of active faults in China provided by the Institute of Geology, China Earthquake Administration. (http://www.neotectonics.cn/arcgis/apps/webappviewer/index.html?id=3c0d8234c1dc43eaa0bec3ea03bb00bc). b Tectonic map of the Kalping thrust system. The red beach balls are focal mechanism solutions of the Jiashi earthquake from USGS and GCMT. The purple circles represent the aftershocks till 17 June 2020 from CENC. The red arrows represent the horizontal velocity field relative to the Eurasian plate (from CMONOC between 1999 and 2019) provided by the GNSS Data, Products and Services Platform (http://www.cgps.ac.cn/) of the China Earthquake Administration