数字地震台网对不同区域地震事件的震中定位研究
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摘要
应用广东数字遥测地震台网数据,通过对广东省周边50 km以外的62次地震重新定位,对比研究广东数字遥测地震台网数据处理软件提供的几种地震定位程序,初步认为:中国东南部、西北部地区及国外距广东地区较近的位于中国东南方向的印尼、日本等地区的地震,3种定位方法均可对其进行定位;而分布在国外较远地区的地震,用Hyposat及locSAT定位程序尚可,且locSAT优于Hyposat定位程序,而单纯型定位程序几乎不能用。
Based seismic waveform data of Guangdong digital network,through relocating of 62 distant earthquakes over 50km to Guangdong province,the three earthquake locating methods used in Guangdong digital seismic network are contrasted with each other.The result shows that to the earthquakes in east-southern China,west-northern China,and earthquakes not far from Guangdong area in Indonesia and Japan,all the three earthquake location methods are effective.As to the earthquakes far from China in abroad,the Hyposat method and locSAT method are also effective,but the simplex location method is out of action.
Based seismic waveform data of Guangdong digital network,through relocating of 62 distant earthquakes over 50km to Guangdong province,the three earthquake locating methods used in Guangdong digital seismic network are contrasted with each other.The result shows that to the earthquakes in east-southern China,west-northern China,and earthquakes not far from Guangdong area in Indonesia and Japan,all the three earthquake location methods are effective.As to the earthquakes far from China in abroad,the Hyposat method and locSAT method are also effective,but the simplex location method is out of action.
引文
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[2]吕金水,何晓灵,缪维成.广东省地震局地球物理观测研究回顾及设想[J].华南地震,2007,27(3)107-110.
[3]朱元清,赵仲和.提高地震定位精度新方法的研究[J].地震地磁观测与研究,1997,18(3):59-67.
[4]贾庆华,陈贵美.国内5.0级以上地震数字记录波形及震相特征分析[J].华南地震,2004,24(3):57-64.
[5]陈贵美,杨选,刘锦.广东数字地震台网“十五”系统的几种地震定位方法的定位效果分析[J].华南地震,2009,29(1):69-78.
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