Abstract

The displacements of the Earth’s surface before and after the earthquakes that took place near the southern shore of Lake Baikal on September 21, 2020 (Bystrinskoe earthquake with a magnitude of M = 5.5), and August 27, 2008 (Kultukskoye earthquake with a magnitude of M = 6.3), were analyzed using satellite radar interferometry methods. Remote sensing data obtained by the Sentinel-1B (C-band) and the ALOS-1/2 PALSAR-1/2 (L-band) spaceborne synthetic aperture radars were used to study deformation processes. Blocks with different strain rates were found based on the results of analysis of satellite radar interferometric measurements for the period from May 2017 to October 2020 for the Bystrinskoe earthquake and from January 2007 to February 2011 for the Kultukskoe earthquake. The difference in the deformation values before the Bystrinskoe earthquake was 14 mm and that before the Kultukskoe earthquake ranged from 12 to 13 mm.

中文翻译：

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2008-2020年南贝加尔湖附近地震区块断层构造动力学的卫星无线电干涉分析

摘要

2020年9月21日贝加尔湖南岸附近地震（M =5.5级的Bystrinskoe地震）和2008年8月27日（Kultukskoye地震，震级为米= 6.3)，使用卫星雷达干涉测量方法进行分析。Sentinel-1B（C波段）和ALOS-1/2 PALSAR-1/2（L波段）星载合成孔径雷达获得的遥感数据用于研究变形过程。根据对 2017 年 5 月至 2020 年 10 月期间的 Bystrinskoe 地震和 2007 年 1 月至 2011 年 2 月的 Kultukskoe 地震卫星雷达干涉测量的分析结果，发现了具有不同应变率的块体。Bystrinskoe地震前的变形值为14 mm，而Kultukskoe地震前的变形值为12～13 mm。