CAJ | 학술논문

推导了sPn与Pn波走时差与震源深度的关系。方程中sPn与Pn波的走时差与震中距无关，只与区域地壳模型和震源深度有关。根据该方程，提出用近震震相sPn与Pn的走时差来测定地震深度的简便、准确方法。运用本方法对2010年6月22日与2012年10月20日发生在宁夏永宁M4．9、 M4．6级地震的震源深度进行了测定，并与Jopens测定结果、中国地震台网中心的结果进行了对比，所测得的结果较准确、可靠。
추도료sPn여Pn파주시차여진원심도적관계。방정중sPn여Pn파적주시차여진중거무관，지여구역지각모형화진원심도유관。근거해방정，제출용근진진상sPn여Pn적주시차래측정지진심도적간편、준학방법。운용본방법대2010년6월22일여2012년10월20일발생재저하영저M4．9、 M4．6급지진적진원심도진행료측정，병여Jopens측정결과、중국지진태망중심적결과진행료대비，소측득적결과교준학、가고。
In this paper, we derived the relationship 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 , only depended on the regional crustal model and the focal depth. According to the equation, 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 M4.9 and M4.6 earthquakes occurred at the junction of Yongning , on June. 22, 2010 and October 20, 2012. The results have been compared with those from other sources such as Jopens and China Earthquake Network Center , showing that our results are accurate and reliable.