2024年1月23日乌什MW7.0地震InSAR同震形变与滑动分布特征
INSAR COSEISMIC DEFORMATION AND SLIDING DISTRIBUTION CHARACTERISTICS OF WUSHI MW7.0 EARTHQUAKE ON JANUARY 23,2024
黄旺 1李杰 2陈荣柳 1李瑞2
作者信息
- 1. 新疆大学建筑工程学院,新疆乌鲁木齐 830046
- 2. 新疆帕米尔陆内俯冲国家野外观测研究站,新疆乌鲁木齐 830011;新疆维吾尔自治区地震局,新疆乌鲁木齐 830011
- 折叠
摘要
研究2024年1月23日乌什县MW7.0地震是了解该地区孕震构造的关键.利用InSAR技术和分布式滑动模型反演乌什地震的滑动分布,结果表明:发震断层为迈丹断裂,且发震断层呈现逆冲型式为主并具有少量左旋走滑分量,走向为230°,倾角为48°,最大滑移量为2.23 m,矩震级为MW6.99,地震的运动模式为逆冲型地震.地震引起的静态库伦应力表明,沿着断层走向方向南北两端的近场区为未来中强地震的危险区.
Abstract
Studying Wushi MW7.0 earthquake on January 23,2024 is the key to understanding the seismogenic structure in this area.The slip distribution of Wushi earthquake is inverted by using In-SAR technology and distributed slip model.The results show that the seismogenic fault is Maidan fault,and the seismogenic fault is dominated by thrust type and has a small amount of left-lateral strike-slip component.The strike is 230°,the dip angle is 48°,the maximum slip is 2.23 m,the moment magnitude is MW6.99,and the motion mode of the earthquake is thrust earthquake.The static Coulomb stress caused by the earthquake shows that the near-field area along the fault strike direction at both ends of the north and south is a dangerous area for future moderate-strong earth-quakes.
关键词
乌什地震/InSAR/同震形变/滑动分布/库伦应力Key words
Wushi earthquake/InSAR/Coseismic deformation/Slip distribution/Coulomb stress引用本文复制引用
基金项目
国家自然科学基金(42274014)
国家自然科学基金(41874015)
国家重点研发项目(2022YFC3003703)
国家外国专家局引智项目(G2022045013L)
自治区重点研发专项(2022B03001-1)
第三次新疆科考(2022xjkk1305)
新疆维吾尔自治区自然科学基金(2022D01B44)
新疆维吾尔自治区自然科学基金(2023D01A105)
出版年
2024
NETL
NSTL
万方数据