China News Service, Chengdu, September 13 (Reporter He Shaoqing) The reporter learned from the State Key Laboratory of Earth Disaster Prevention and Geological Environmental Protection of Chengdu University of Technology on the 13th that the results of radar satellite remote sensing monitoring showed that the earthquake caused the east side of the main peak of Gongga Mountain. The glaciers such as Hailuogou, Mozigou, Yanzigou, Nanmenguangou and their trailing edges have all monitored significant deformation signals, and the glaciers on the west side of the main peak were relatively less affected by the earthquake.
On September 5, an earthquake of magnitude 6.8 occurred in Luding County, Sichuan.
The epicenter of the earthquake was located in the Hailuogou Glacier Forest Park of Gongga Mountain. How the glaciers near the main peak of Gongga Mountain were affected by the earthquake has received widespread concern from the society.
Deformation radar satellite remote sensing monitoring map of the Gongga Mountain glacier group in the Luding earthquake.
Photo by Chengli Earthquake-hit National Laboratory
The Chengli Earthquake Disaster National Severity Laboratory used two phases of the ESA Sentinel-1 radar satellite orbital intensity images before the Luding earthquake on August 26, 2022 and after the earthquake on September 7 to calculate based on pixel offset tracking technology (POT). The deformation results of glaciers around the main peak of Gongga Mountain are obtained.
The deformation results show that the Hailuogou Glacier was most affected by the earthquake, especially a large-scale continuous deformation area was monitored at the front edge of the ice waterfall, with an area of about 2 square kilometers and a maximum displacement of about 30 meters.
Deformation radar satellite remote sensing monitoring map of the Hailuogou Glacier Icefall area of the Luding earthquake.
Photo by Chengli Earthquake-hit National Laboratory
In addition, the Chengli Geological Disaster National Severity Laboratory also identified a total of 441 geological disasters near Caoke Township, Shimian County.
The drone image covers an area of 12.8 square kilometers in Caoke Township, Shimian County. According to the results of remote sensing interpretation, a total of 441 earthquake landslides occurred within the range, with a total area of about 0.88 square kilometers, and the largest single landslide area is 53,441 square meters.
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