地震地磁观测与研究2023，Vol.44Issue(6)：20-26,7.DOI:10.3969/j.issn.1003-3246.2023.06.003
2023年山东平原MS5.5地震预警处理结果分析
Analysis of early warning processing results from the 2023 Shandong Pingyuan MS 5.5 earthquake
摘要
Abstract
On August 6,2023,the MS 5.5 earthquake occurred in Pingyuan County,Shandong Province.The JEEW data processing system of the China Earthquake Networks Center had effectively processed and produced the early warning information.This earthquake occurred within the Shandong earthquake early warning network.The first early warning processing results were released 5.5 s after the earthquake,using data from 5 stations.Compared with the official quick report results,the first early warning processing results show that the deviation of the epicenter position is 3.5 km,the magnitude deviation is-0.5,and the blind zone radius is 16 km.The main reason for the small early warning magnitude is that there were few effective waveform data in the short term after the earthquake.In addition,the overall large early warning magnitude is mainly related to the amplification effect of the sedimentary basin in the North China Plain,different magnitude algorithms,and the number of trigger stations.The results show that the JEEW warning system has good results,but the magnitude algorithm remains to be improved.关键词
地震预警/预警处理结果分析/山东平原MS5.5地震Key words
earthquake early warning/analysis of early warning processing results/the Shandong Pingyuan MS 5.5 earthquake引用本文复制引用
徐佳静,张雅茜,席楠,孙丽..2023年山东平原MS5.5地震预警处理结果分析[J].地震地磁观测与研究,2023,44(6):20-26,7.基金项目
国家自然科学基金(项目编号:42304072) （项目编号:42304072）
