地震地磁观测与研究2012，Vol.33Issue(3)：240-246,7.DOI:10.3969/j.issn.1003-3246.2012.03/04.045
北京地震台地震走时表的研制
The development of travel timetable for earthquake in Beijing Seismic Station
摘要
Abstract
Basing on the long-term analysis of earthquake,we found that the seismic travel time have a little residuals between the IASP91 and the actual recording of Beijing Seismic Station. We established BJT model for computing seismic travel times which combined the velocity structure of BJT 40 km underground with AK135 model for the deeper than 40 km. We used the real travel times from the recording of BJT station between 2003 and 2008 to modify this model. Ultimately, we have developed BJT travel-time tables. The results of comparing with natural earthquake and artificial earthquake, we found the precision of BJT travel timetable was over 38% higher than IASP91. Especially for near earthquake, the precision raised more than 50%.关键词
走时残差/地球模型/走时表/IASP91/AK135/PK9Key words
travel time residuals/ earth-model/ travel timetable/ IASP91/ AK135/ PK9引用本文复制引用
朱战斌,郑需要,田鑫..北京地震台地震走时表的研制[J].地震地磁观测与研究,2012,33(3):240-246,7.基金项目
中央公益性科研院所基本科研业务专项(DQJB08B22,DQJB10B31) （DQJB08B22,DQJB10B31）
