摘要
选取2015—2017年全国自动地震速报综合触发系统在新疆境内触发的自动速报震级[基于“多路综合触发”策略产出的综合触发结果震级(AU)],与人工速报震级数据进行偏差分析,获取研究区震级平均偏差为0.435 4,标准误差为±0.542 9,分析认为:对于新疆不同震级档和不同区域的地震,自动速报震级精准度有所不同,反映了震级偏差存在地域性与层次性;研究区自动速报震级(AU)与人工速报震级偏差小于或等于±0.3的地震约占总数的40.8%,表明自动地震速报综合触发系统在新疆区域的精准度一般,且不可靠结果均表现为自动速报震级(AU)偏大,均大于人工速报震级。
Based on the AU data produced by the“multi-channel integrated triggering”strategy,the magnitude is analyzed by using the data of Xinjiang large earthquake quick report from 2015 to 2017.The average deviation of magnitude in the study area is 0.435 4 and the standard error is±0.542 9.According to the analysis of magnitude deviation obtained,it is concluded that the accuracy of automatic positioning results varies in different magnitude scales and regions,reflecting the regional and hierarchical nature of magnitude deviation.The difference between AU magnitude and quick-report magnitude in Xinjiang is about 40.8%of the total,which is less than half of the total.Generally speaking,the accuracy of AU magnitude in Xinjiang is general,and the unreliable results are that the AU magnitude is larger than that of artificial quick-report magnitude.
作者
南芳芳
张锋
龚固斌
赖爱京
黄帅堂
冯英
Nan Fangfang;Zhang Feng;Gong Gubin;Lai Aijing;Huang Shuaitang;Fen Ying(Aksu Center Seismic Station,Xinjiang Uygur Autonomous Region 843000,China;Hetian Seismic Station,Xinjiang Uygur Autonomous Region 848000,China;Earthquake Agency of Xinjiang Uygur Autonomous Region,Urumqi 830011,China)
出处
《地震地磁观测与研究》
2019年第4期45-52,共8页
Seismological and Geomagnetic Observation and Research
基金
新疆科学基金课题(项目编号：201726)
关键词
综合触发结果(AU)
人工速报震级
震级偏差
精准度
comprehensive trigger result(AU)
rapid magnitude reporting
magnitude deviation
accuracy
