2021年11月17日江苏省盐城市大丰区海域M_(S)5.0地震快速测定与应急产品产出  

Fast detection and emergency products output of the M_(S)5.0 earthquake in Dafeng sea area,Yancheng City,Jiangsu Province on November 17,2021

作　　者：于海英[1,2] 魏薇 王鹏[1,2] 刘芳 孙冬军[1,2] 王俊菲 温燕林[1,2] 邵永谦 毕波 YU Haiying;WEI Wei;WANG Peng;LIU Fang;SUN Dongjun;WANG Junfei;WEN Yanlin;SHAO Yongqian;BI Bo(Shanghai Earthquake Agency,Shanghai 200062,China;Shanghai Sheshan National Geophysical Observatory and Research Station,Shanghai 200062,China;Jiangsu Earthquake Agency,Nanjing 210014,China)

机构地区：[1]上海市地震局,中国上海200062 [2]上海佘山地球物理国家野外科学观测研究站,中国上海200062 [3]江苏省地震局,中国南京210014

出　　处：《地震地磁观测与研究》2022年第3期172-177,共6页Seismological and Geomagnetic Observation and Research

基　　金：上海佘山地球物理国家野外科学观测研究站资助项目(项目编号:2020K07)。

摘　　要：2021年11月17日13时54分(北京时间)江苏盐城市大丰区海域发生M_(S)5.0地震。江苏盐城、南通等地区震感强烈,上海普遍有感,山东和浙江等部分地区亦有震感。上海地震台在震后7 min发布人工速报结果,并启动地震应急产品产出工作,产品包括地震基本参数、历史地震、地震构造、震源机制、仪器烈度和余震精定位等数据。本次地震发生在黄海南部坳陷地区,震源机制解表明该地震为一次走滑型事件,断层呈NE走向,余震主要沿主震NE方向拓展约20 km,深度集中在15 km以内范围。The M_(S)5.0 earthquake struck at 13:54(UTC+8)on November 17,2021,Beijing time,in Dafeng sea area,Yancheng City,Jiangsu Province.The tremors were felt strongly in Yancheng,Nantong and other areas of Jiangsu Province,generally in Shanghai,and also in some areas of Shandong Province and Zhejiang Province.Shanghai Seismic Station reported the formal quick report in 7 min after the earthquake and started to work on the emergency output of earthquake-related products including basic seismic parameters,historical earthquakes,seismological tectonics,focal mechanism,instrumental intensity and aftershocks precision positioning and so on.The earthquake occurred in the south depression of Yellow Sea.The focal mechanism result suggests a strike-slip event and the strike direction is northeast.The aftershock mainly expands about 20 km along the southeast direction of the main earthquake.The depth is concentrated within 15 km.

关 键 词：江苏盐城大丰地震 地震速报 震源机制 地震烈度 数据产品 

分 类 号：P315.7[天文地球—地震学]