華北地區(qū)1900—1970年5級以上地震發(fā)震位置與震源機(jī)制研究
發(fā)布時(shí)間:2018-05-15 20:11
本文選題:華北地區(qū) + 歷史地震; 參考:《地球物理學(xué)報(bào)》2016年11期
【摘要】:本文通過整理世界地震臺網(wǎng)1900—1970年世界臺站震相報(bào)告,對該時(shí)期發(fā)生在我國華北地區(qū)震級5級以上強(qiáng)震的震源位置及震源機(jī)制(斷層面解)進(jìn)行了測量.具體開展了以下三點(diǎn)工作:(1)使用1900—1970年之間Shide Circulars(BAASSC,1900—1912),《國際地震資料匯編》(ISS)和EHB Bulletin的震相到時(shí),對該時(shí)間范圍內(nèi)的22個(gè)地震事件重新定位,得到了21個(gè)地震事件的可靠結(jié)果;(2)使用1933年至1970年之間ISS的P波初動,對該時(shí)間范圍內(nèi)的15個(gè)地震事件求解震源機(jī)制解,得到了其中12個(gè)地震事件的震源機(jī)制解的可靠結(jié)果,從而豐富了華北地區(qū)基于全球地震臺網(wǎng)觀測的1900—1970年歷史強(qiáng)震目錄震源機(jī)制資料;(3)基于華北地區(qū)地震地質(zhì)及區(qū)域構(gòu)造應(yīng)力場研究結(jié)果,推斷了華北地區(qū)M≥5.0的部分缺乏地震資料觀測的歷史地震斷層面參數(shù),并對這種方法推斷的斷層面參數(shù)的可靠性進(jìn)行了討論.
[Abstract]:In this paper, the focal location and focal mechanism (fault plane solution) of strong earthquakes with magnitude 5 or above occurred in North China during the period of 1900-1970 are measured by sorting out the world seismograph report of the world seismograph network from 1900 to 1970. The following three specific tasks have been carried out: (1) using the seismograms of Shide Circulars BAASSC 1900-1912 (International Seismological data Repertory) and EHB Bulletin from 1900-1970 to relocate 22 earthquake events within that time range. A reliable result of 21 earthquake events is obtained. Using the initial P wave of ISS from 1933 to 1970, the focal mechanism solutions are obtained for 15 earthquake events in this time range, and the reliable results for the focal mechanism solutions of 12 of them are obtained. This enriches the focal mechanism data of the historical strong earthquakes catalogue from 1900 to 1970 in North China based on the global seismograph.) based on the results of the study on seismic geology and regional tectonic stress field in North China, In this paper, the authors infer the parameters of fault plane of historical earthquake where M 鈮,
本文編號:1893763
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