Surface Deformation and Hazard Analysis After the 2023 Ms 6.2 Earthquake in Jishishan， Gansu Province Based on InSAR and Optical Imagery Interpretation

CHEN Peng; QIU Liangcai; YAO Yibin; ZHU Chengchang; LU Jierui; GUAN Xingyao; HONG Yang; SUN Shizheng

doi:10.13203/j.whugis20240074

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Surface Deformation and Hazard Analysis After the 2023 Ms 6.2 Earthquake in Jishishan， Gansu Province Based on InSAR and Optical Imagery Interpretation

Jishishan Earthquake | 更新时间：2026-11-05

- Surface Deformation and Hazard Analysis After the 2023 Ms 6.2 Earthquake in Jishishan， Gansu Province Based on InSAR and Optical Imagery Interpretation
- Geomatics and Information Science of Wuhan University Vol. 50, Issue 2, Pages: 257-270(2025)
- 作者机构：
  
  1.西安科技大学测绘科学与技术学院，陕西西安，710054
  2.中国科学院精密测量科学技术创新研究院大地测量与地球动力学国家重点实验室，湖北武汉，430077
  3.武汉大学测绘学院，湖北武汉，430079
  4.武汉大学地球空间环境与大地测量教育部重点实验室，湖北武汉，430079
- 作者简介：
- 基金信息：
- DOI：10.13203/j.whugis20240074
  CLC： P227
- Received：06 March 2024，
  
  Published：05 February 2025
- 稿件说明：
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陈鹏,邱梁才,姚宜斌，等.基于InSAR和光学影像解译的2023年甘肃积石山Ms 6.2震后地表形变和灾害分析[J].武汉大学学报（信息科学版）,2025,50(2):257-270.

CHEN Peng,QIU Liangcai,YAO Yibin,et al.Surface Deformation and Hazard Analysis After the 2023 Ms 6.2 Earthquake in Jishishan, Gansu Province Based on InSAR and Optical Imagery Interpretation[J].Geomatics and Information Science of Wuhan University,2025,50(2):257-270.
陈鹏,邱梁才,姚宜斌，等.基于InSAR和光学影像解译的2023年甘肃积石山Ms 6.2震后地表形变和灾害分析[J].武汉大学学报（信息科学版）,2025,50(2):257-270. DOI：10.13203/j.whugis20240074

CHEN Peng,QIU Liangcai,YAO Yibin,et al.Surface Deformation and Hazard Analysis After the 2023 Ms 6.2 Earthquake in Jishishan, Gansu Province Based on InSAR and Optical Imagery Interpretation[J].Geomatics and Information Science of Wuhan University,2025,50(2):257-270. DOI：10.13203/j.whugis20240074

摘要

2023⁃12⁃18甘肃省临夏回族自治州积石山发生了Ms 6.2地震，导致建筑物被损毁并诱发了大量的同震滑坡，造成了严重的人员伤亡和社会经济损失。首先通过合成孔径雷达干涉测量（interferometric synthetic aperture radar，InSAR）技术获取了地表同震形变信息，并利用高分辨率光学影像对震中区域进行目视解译。然后，基于InSAR同震形变信息和高分辨率光学目视解译信息进行地灾提取；最后，对提取的地灾信息进行统计，并简要分析其形成的潜在因素。结果表明，地震导致震中东北侧两个断层间形成一处近似椭圆的隆起，其长、短轴分别约22.5 km和15 km，最大隆起接近8 cm，符合逆冲型地震运动特征。地震造成震中附近1 506处房屋损毁，震中距主要分布在5~25 km范围内，方位角主要在0°~30°和330°~360°之间，以砖木和土木结构的农村自建房为主；震中附近共解译出同震滑坡4 996处，震中距主要分布在5~30 km范围内，方位角在0°~60°和330°~360°之间，以小型黄土滑坡为主；其中寨子村大型滑坡体表面存在裂缝208条，滑坡和崩塌共计73处，存在重大安全隐患；中川乡滑坡-泥流受灾面积达456 982.10 m

，导致158间房屋损毁，道路损毁4 569 m。此次地震在震中5 km内未造成严重的地表灾害，说明受灾最严重的地区并不一定会集中在微观震中，这与地震波传递方向和区域地质状况有密切的关系。

Abstract

Objective

On 18th December 2023

an Ms 6.2 earthquake struck Jishishan County

Linxia Hui Autonomous Prefecture

Gansu Province

China. It triggered significant building damage and induced numerous coseismic landslides

resulting in severe casualties and substantial socio-economic losses. The acquisition of post-earthquake surface deformation and disaster distribution information is of great guiding significance for disaster assessment and post-disaster reconstruction.

Methods

First

surface coseismic deformation information was obtained using interferometric synthetic aperture radar (InSAR). And

high-resolution optical imagery was employed for visual interpretation near the epicenter. Second

seismic disaster extraction was performed based on coseismic deformation information from InSAR and visual interpretation information from high-resolution optical images. Finally

the extracted seismic disaster information was statistically analyzed

and potential factors contributing to its formation were briefly analyzed.

Results and Conclusions

The earthquake resulted in an approximately elliptical uplift between two faults to the northeast of the epicenter

with long and short axes measuring approximately 22.5 km and 15 km

respectively. The maximum uplift approached 8 cm

consistent with characteristics of thrust-type seismic motion. The earthquake destroyed 1 506 buildings near the epicenter

mainly affecting self-built rural houses made of brick

wood

and earth structures. The epicentral distance was primarily distributed within a range of 5 to 25 km

and the azimuths were predominantly between 0° to 30° and 330° to 360°. A total of 4 996 coseismic landslides were interpreted near the epicenter

primarily distributed within a range of 5 to 30 km distance to the epicenter

with azimuths between 0° to 60° and 330° to 360°

predominantly comprising small-scale loess landslides. Among these

the surface of the large landslide in Zhaizi Villag

e exhibited 208 cracks and 73 landslides and collapses

posing significant safety hazards. The area affected by the flowslide in Zhongchuan Township was about 456 982.10 m

destroying 158 buildings and 4 569 m of roads. The earthquake did not cause severe surface disasters within 5 km of the epicenter

indicating that the most severely affected areas may not necessarily concentrate around the micro-epicenter

which is closely related to the direction of seismic wave propagation and regional geological conditions.

关键词

Keywords

references

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