2024年1月23日乌什7.1级地震强震动记录特征分析  

ANALYSIS OF STRONG GROUND MOTION RECORDS OF WUSHI M_(S)7.1 EARTHQUAKE ON JANUARY 23,2024

作　　者：马鑫 乌尼尔[1] 阿布都热依木江·巴克 赵晓成 何金刚[1] MA Xin;Wunier;Abudureyimujiang Bake;ZHAO Xiao-cheng;HE Jin-gang(Earthquake Agency of Xinjiang Uygur Autonomous Region,Urumqi 830011,Xinjiang,China)

机构地区：[1]新疆维吾尔自治区地震局,新疆乌鲁木齐830011

出　　处：《内陆地震》2024年第2期143-150,共8页Inland Earthquake

基　　金：新疆地震青年科学基金(202408);新疆维吾尔自治区区域协同创新专项(2023E01023).

摘　　要：新疆地震台网中心共获取乌什7.1级地震813条仪器烈度信息、496组强震动记录,其中PH002台站峰值加速度280.68 cm·s^(-2)为本次获得的最大峰值加速度。对获取的219个台站的峰值加速度与第五代中国地震动参数区划图衰减关系对比发现两者在100 km范围内比较符合。计算分析5个峰值加速度超过100 cm·s^(-2)的台站加速度反应谱,并与地震动设计反应谱进行比对分析,同时计算出5个台站地震动有效持时,显示200 km内地震能量释放较迅速,体现出地震破坏力较大。A total of 813 instrument intensity information and 496 sets of strong motion records of Wushi 7.1 earthquake were obtained by Xinjiang Seismic Network Center.The peak acceleration of PH002 station was 280.68 cm·s^(-2),which was the maximum peak acceleration obtained this time.This paper compares the attenuation relationship between the peak accelerations obtained from 219 stations and the fifth generation of China Seismic Ground Motion Parameter Zoning Map,and finds that the two are more consistent within a range of 100 km.This paper calculates and analyzes 5 peak accelerations exceeding 100 cm·s^(-2).The acceleration response spectrum of these 5 stations was compared and analyzed with the seismic design response spectrum.At the same time,the effective seismic duration of these 5 stations was calculated,and it was found that the seismic energy release was faster within 200 km,indicating a greater seismic destructive force.

关 键 词：乌什7.1级地震 强震动记录 峰值加速度 加速度反应谱 能量有效持时 

分 类 号：P315.7[天文地球—地震学]