确定震源深度的PTD方法及其应用  

A PTD method a new method for determinating focal depth and its application

作　　者：朱元清[1] 夏从俊[1] 李平[1] 

机构地区：[1]上海市地震局

出　　处：《地震地磁观测与研究》1997年第3期21-29,共9页Seismological and Geomagnetic Observation and Research

基　　金：地震联合基金

摘　　要：根据对不同台站间初至到时作变换后的到时差来计算地震的深度，利用该方法计算了华东地区１９８２～１９９２年底能定出深度的地震，并作了相应的误差分析。按中国分区速度结构，编制出各区的深度－走时差表。A method using the first arrival times to determinate the focal depth have been introduced in this paper. The trave time difference is calculated by transforming the arrival times of initial phases at different stations. Most of focal depthes in the East of China have been calculated from 1982 to 1992 by this method and the error was estimated. According to regional velocity structure of China, we established the Depth Trave Time Difference Tables. And two samples show the usage of the table.

关 键 词：震源深度 走时差表 PTD法 地震 

分 类 号：P315.3[天文地球—地震学]