Evaluation of Earthquake Monitoring and Early Warning Capability of Guangdong Seismic Network
XIONG Cheng
LIANG Ming
HONG Yuqing
ZHANG Yanxin
YE Shishan
ZENG Xiaoyan
TANG Yaowei
QIAN Yinping
Abstract：The"National Seismic Intensity Rapid Reporting and Early Warning Project Guangdong Subproject"has been completed,which will significantly enhance the service capability and level of seismic disaster prevention and mitigation in Guangdong Province.In this paper,based on the construction of the station network in the Guangdong Subproject,the earthquake early warning capability of the Guangdong Seismic Network was analyzed,and several key parameters were evaluated.The results show that after the integration of base stations,basic stations,and general stations,the average station spacing of the Guangdong Seismic Network is 14.1 km,and the average station spacing of the early warning network in key warning areas can reach 12.9 km.The entire Guangdong warning network can monitor earthquakes of magnitude 1.2 throughout the province and earthquakes of magnitude 1.0 in key warning areas,and the monitoring capability in local key areas can reach magnitude 0.0.The average first warning time for the entire province is 5.2 s,and it is 4.3 s in key warning areas.The average accuracy of intensity rapid reporting for the entire province is 6.5 km,and it is 4.4 km in key warning areas.This paper provides reasonable expectations for the performance and effectiveness of the Guangdong warning system,and is an important reference for further research and improvement of the early warning system.
Keywords：Guangdong Seismic NetworkStation spacingMonitoring capacityEarthquake early warning
Publication Date：2024-09-30
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：10( 127-136 )