首页|期刊导航|中国地震研究：英文版|Determination Method of Focal Depth of Local Earthquake Using the Travel-time Difference between Pn and sPn
中国地震研究：英文版2011，Vol.25Issue(3)：300-309,10.
Determination Method of Focal Depth of Local Earthquake Using the Travel-time Difference between Pn and sPn
Determination Method of Focal Depth of Local Earthquake Using the Travel-time Difference between Pn and sPn
摘要
Abstract
In this paper, we derived the relationships between the travel time difference of sPn and Pn and the local earthquake focal depth. In these equations, the travel time difference of sPn and Pn is not related to the epicentral distance, but depends only on the regional crustal mode and the focal depth. According to the equations, we provided a simple and accurate method to determine local earthquake focal depth by using the travel time difference between phase sPn and Pn. This method has been used to determine the focal depths of two earthquake of Ms6. 1 and Ms5.6 which occurred at the junction of Panzhihua and Huili, Sichuan on August 30 and 31, 2008. The results were compared to those from other sources such as the China Earthquake Networks Center, and the comparison shows that the results are accurate and reliable.关键词
震源深度/地震台网/旅行时间/SPN/测定方法/震中距/攀枝花/交界处Key words
Focal depth/sPn seismic phase/Travel-time difference between sPn and Pn/Critical epicentral distance分类
天文与地球科学引用本文复制引用
Wang Dengwei,Xu Qinping,Ma Fuhong,Cheng Xuefen..Determination Method of Focal Depth of Local Earthquake Using the Travel-time Difference between Pn and sPn[J].中国地震研究：英文版,2011,25(3):300-309,10.基金项目
This research was funded by the special support project, entitled ＂ Sorting out and processing of seismic data＂ of central public-interest basic scientific and technological research of Institute of Crustal Dynamics, China Earthquake Administration （ZDJ2007-4). （）
