摘要
根据各大网站地震目录和前人研究成果,分析全球地震台网与地震台阵、我国区域台网与地震台阵的监测能力,阐述了地震台阵与密集台网/台阵的区别。研究表明,对同一地区所检测的地震数,地震台阵是地震台网的3—10倍,而震级下限可降低1.2—2级。一般情况下,以微弱信号检测为目的的地震台阵监测能力均优于以结构研究为目的的密集台网/台阵,2种台阵是目的、性质、孔径、形状、台间距、技术手段、研究方法均不同的监测系统。
Based on the earthquake catalogs of major websites and previous research results,we analyze the monitoring capabilities of global seismic networks and arrays,remote seismic arrays and regional arrays,and Chinese seismic arrays,and explain the differences between seismic arrays and dense networks/arrays.The study shows that for the number of earthquakes detected in the same area,the seismic array is 3-10 times higher than the seismic network,and the lower limit of magnitude can be decreased by 1.2-2 magnitudes.In general,the monitoring capability of a seismic array for weak signal detection is better than that of a dense network/array for structural research.
作者
郝春月
郑重
HAO Chunyue;ZHENG Zhong(Institute of Geophysics,China Earthquake Administration,Beijing 100081,China)
出处
《地震地磁观测与研究》
2020年第6期3-14,共12页
Seismological and Geomagnetic Observation and Research
基金
IMS台阵测试与评估(合同号:2016-1154)。
关键词
地震台阵
密集台阵
监测能力
seismic array
dense array
monitoring capability
