SENTINEL-1A影像用于台湾高雄Mw6.7地震形变分析

Seismic Deformation Monitoring of Taiwan Kaohsiung Based on Sentinel-1A Image

为及时获取大范围地震震前震后的形变数据,监测和分析地表形变,利用欧空局最新发射的SENTINEL-1ASAR影像,采用D-InSAR技术获取台湾高雄Mw6.7级地震同震形变场。研究分析得到台湾高雄地震的震中位置约为120.41°E、22.96°N,地震主要形变范围为震中方圆约8.3km,地表在雷达视线向最大形变约为16.4cm、最大相对形变约18.0cm。

In order to obtain large-area seismic deformation data, monitoring and analysis of surface deformation, based on InSAR data from the newly launched ESA’s Sentinel-1 A satellite, we used D-InSAR to obtain coseismic deformation field of the Kaohsiung Mw6.7 earthquake located in Taiwan, China. The results show that the epicenter of the earthquake is about120.41 E, 22.96 N. The main deformation range is about 8.3 km. The maximal deformation in the line of sight(LOS) direction reaches about 16.4 cm, and the maximal relative deformation in LOS direction reaches about 18.0 cm.