2023年2月6日土耳其M_(W)7.8帕扎尔哲克地震地表破裂特征分析  

The Surface Rupture Characteristics of M_(W)7.8 Pazarcık Earthquake in Turkey on February 6,2023

作　　者：梁朋[1] 田勤俭 徐岳仁[1] 周晓成[1] 熊仁伟[1] 李文巧[1] Liang Peng;Tian Qinjian;Xu Yueren;Zhou Xiaocheng;Xiong Renwei;Li Wenqiao(Key Laboratory of Earthquake Prediction,Institute of Earthquake Forecasting,China Earthquake Administration,Beijing 100036,China;China Earthquake Disaster Prevention Center,Beijing 100029,China)

机构地区：[1]中国地震局地震预测研究所,地震预测重点实验室,北京100036 [2]中国地震灾害防御中心,北京100029

出　　处：《震灾防御技术》2023年第3期483-494,共12页Technology for Earthquake Disaster Prevention

基　　金：基本科研业务费专项基金(CEAIEF20230602、2021IEF0104、CEAIEF2022050502、CEAIEF20230403、2020IEF0603)。

摘　　要：2023年2月6日土耳其东南部连续发生2次7级以上破坏性地震,造成大量人员伤亡和建筑物损坏。基于高分辨率遥感系统解译了帕扎尔哲克7.8级地震地表破裂空间分布,结合野外科考验证、基于立体像对生成的高分辨率数字地表模型及余震精定位数据,对帕扎尔哲克7.8级地震地表破裂特征进行分析。该次地震地表破裂主要沿先前断层迹线发育,总长度约为320 km。地表破裂位置地貌特征、野外典型位置调查结果及余震精定位结果均显示该次地震以左旋走滑运动为主,局部伴有小规模垂向运动。最大左旋位移位于东安纳托利亚断裂帕扎尔哲克段,蒂尔克奥卢以南地表破裂逐渐不连续,左旋位错不明显。On February 6,2023,two consecutive devastating earthquakes that are larger than M_(W)7 occurred in southeastern Turkey,causing a large number of people dead and buildings damaged.In this paper,the spatial distribution of surface rupture of Pazarcık M_(W)7.8 earthquake is interpreted based on high-resolution remote sensing images,and the characteristics of surface rupture are analyzed in combination with field research verification,high-resolution DSM generated based on stereoscopic image pairs and aftershock precise location data.The surface rupture of this earthquake mainly developed along the previous fault trace,with a total length of about 320 km.The geomorphologic characteristics of the surface rupture location,the field survey and the aftershock location all show that the earthquake is dominated by left-lateral strike-slip movement,with some small vertical movements.The maximum left-lateral displacement is located in the Pazarcık section of the East Anatolian fault,and the surface rupture is gradually discontinuous and the left-lateral dislocation is not obvious in south of Türkoğlu.This study has great significance for understanding the distribution of the East Anatolia fault in the southwest and its connection with the Dead Sea fault.

关 键 词：帕扎尔哲克7.8级地震 东安纳托利亚断裂 地表破裂 高分辨率数字地表模型 

分 类 号：P315.2[天文地球—地震学]