地理空间信息2024，Vol.22Issue(6)：109-112,117,5.DOI:10.3969/j.issn.1672-4623.2024.06.026
基于Sentinel-1的门源Ms 6.9三维同震形变提取与分析
Extraction and Analysis of 3D Coseismic Deformation of Menyuan Ms6.9 Earthquake Based on Sentinel-1 Data
蒲颂文 1闻鑫 1周志伟 2汪汉胜 2江利明 1李晨程2
作者信息
- 1. 中国科学院精密测量科学与技术创新研究院 大地测量与地球动力学国家重点实验室,湖北 武汉 430077||中国科学院大学,北京 100049
- 2. 中国科学院精密测量科学与技术创新研究院 大地测量与地球动力学国家重点实验室,湖北 武汉 430077
- 折叠
摘要
Abstract
On the basis of Sentinel-1 synthetic aperture radar(SAR)data of ascending and descending orbits,using differential InSAR(D-In-SAR)and pixel offset tracking(POT)techniques,we obtained the LOS deformation of Ms6.9 earthquake in Menyuan,Qinghai on January 8th,2022,and used 3D model to extract the 3D coseismic deformation field.The results show that①the maximal deformation results of D-InSAR are 0.56 m and 0.6 m respectively,while the maximal deformation results of POT are 0.65 m and 0.72 m respectively.②The length of earth sur-face rupture zone caused by the earthquake is more than 20 km,and it is generally distributed in the NWW direction.The coseismic deformation field is butterfly-shaped,and the deformation is distributed along the symmetry axis according to the law of similar amplitude and opposite direc-tion.③The earthquake mainly features east-west displacement,with the maximal horizontal displacement exceeding 1.1 m and the maximal verti-cal displacement about 0.5 m,which is consistent with the characteristics of strike-slip earthquake.The results of this paper are basically in con-sistent with the field survey,which enrich the observation results of coseismic deformation of this earthquake,and identify and complement the characteristics of surface rupture zone.关键词
门源地震/Sentinel-1数据/三维同震形变场/实地踏勘Key words
Menyuan earthquake/Sentinel-1 data/3D coseismic deformation field/field survey分类
天文与地球科学引用本文复制引用
蒲颂文,闻鑫,周志伟,汪汉胜,江利明,李晨程..基于Sentinel-1的门源Ms 6.9三维同震形变提取与分析[J].地理空间信息,2024,22(6):109-112,117,5.
