Two public inventories of landslides induced by the 10 June 2022 Maerkang Earthquake swarm, China and ancient landslides in the affected area
Xiaoyi Shao, Chong Xu, Peng Wang, Lei Li, Xiangli He, Zhaoning Chen, Yuandong Huang, Xiwei Xu
Abstract
The June 10, 2022 M s5.8, M s6.0 and M s5.2 earthquake swarm of Maerkang, Sichuan, China has triggered a lot of landslides. The primary purpose of this paper is to prepare a detailed coseismic landslides inventory and ancient landslide inventory in the earthquake swarm-affected area. Based on pre- and post-quake high-resolution optical satellite images (planet), we delineated 650 individual coseismic landslides in the VI-intensity area and above, occupying an area of about 1.2 km 2 . The largest landslide covers about 70217 m 2 in horizontal projection, while the smallest one is just 81 m 2 . In addition, based on the series of high-precise images on the Google Earth Platform, 759 ancient landslides were also delineated with an area of 117 km 2 . The maximum area reaches about 2 km 2 and the minimum is 2580 m 2 . The two inventories provide a basis for landslide spatial distribution and hazard assessment, disaster prevention and mitigation of earthquake-triggered landslides in similar regions. We opened these two landslide inventories to facilitate researchers to carry out more in-depth work.