地震地磁观测与研究2026，Vol.47Issue(3)：41-46,6.DOI:10.3969/j.issn.1003-3246.2026.03.006
内蒙古地震预警站网下不同类型地震定位方法适用性对比分析
Comparative analysis of applicability of earthquake location methods for different event types based on the Nei Mongol earthquake early warning station network
摘要
Abstract
The Nei Mongol Zizhiqu is located at the junction of the North China and Northwest China seismic belts.After the upgrade of the early warning station network,earthquake location schemes adapted to different source types are urgently needed.Based on monitoring data from the Nei Mongol earthquake early warning station network from the year of 2023 to 2025,100 natural earthquakes(ML 2.5-4.7)and 20 non-natural seismic events(blasting and collapse,ML 2.7-3.5)were selected.Seismic phase travel-time residuals and epicentral horizontal location deviations were used as evaluation indicators to compare the applicability of four location methods,namely HypoSAT,LocSAT,HYP2000 and the Simplex method.The results show that HypoSAT performs well for natural-earthquake rapid reporting,with strong adaptability to complex terrain and station-sparse network-edge areas,stable residuals and relatively high location accuracy.For non-natural events,the Simplex method is more consistent with the shallow source depth and relatively simple signal characteristics,and,the epicentral horizontal location deviations are within 5 km.The differentiated scheme of"HypoSAT preferred for natural earthquakes and Simplex preferred for non-natural events"can provide a reference for selecting location methods in regional seismic rapid-reporting operations.关键词
内蒙古地震预警站网/地震定位方法/天然地震/非天然地震/定位精度Key words
Nei Mongol earthquake early warning station network/earthquake location method/natural earthquake/non-natural seismic events/location accuracy引用本文复制引用
马亮,宋程,尹战军,徐岩,王勇,倪铭..内蒙古地震预警站网下不同类型地震定位方法适用性对比分析[J].地震地磁观测与研究,2026,47(3):41-46,6.基金项目
内蒙古自治区地震局局长基金课题(项目编号:2024QN03) （项目编号:2024QN03）
天津市地震局重点科研项目(项目编号:Zd202502) （项目编号:Zd202502）
