防灾减灾工程学报2024，Vol.44Issue(3)：725-729,5.DOI:10.13409/j.cnki.jdpme.20240222001
国家地震烈度速报江苏子系统参数测定能力评估
Evaluation of the Parameter Determination Capability of Jiangsu Subsystem in the National Earthquake Rapid Reporting System
摘要
Abstract
This article analyzes the reliability and accuracy of the seismic intensity rapid reporting and warning system's source parameter determination in Jiangsu since March 2023.The study selected 98 seismic events with ML≥2.0 that occurred in the Jiangsu region from March 1,2022,to December 20,2023,and compared the results of the new and old systems for the same events.The results show that the epicenter location deviations are mostly within the range of 0.3-12.1 km,with the majority of errors falling within the normal range.The seismic magnitude deviations of both systems are generally small,with only a few results showing larger deviations due to factors such as the number of locating stations,clock errors,data noise,and interference.Additionally,in terms of monitoring capability,the seismic magnitude monitoring lower limit of the new system decreased overall by ML0.5.Two-di-mensional simulation earthquake location testing methods showed an improvement in positioning accu-racy.Overall,the new system demonstrated good practicality and can provide reliable data support for earthquake analysis and scientific research.关键词
江苏/地震烈度速报预警系统/震级偏差/震中位置/定位精度Key words
Jiangsu/earthquake intensity rapid reporting and early warning system/magnitude devia-tion/epicenter location/positioning accuracy分类
建筑与水利引用本文复制引用
钱婷,王俊,魏梦婉,何奕成,杜航,倪昊琦..国家地震烈度速报江苏子系统参数测定能力评估[J].防灾减灾工程学报,2024,44(3):725-729,5.基金项目
地震科技星火项目(XH23015A)、江苏省地震局科技创新团队(202204)、中国地震局监测、预报、科研三结合课题(3JH-202401014)资助 （XH23015A）
