| 甘肃地区sPn震相研究及其震源深度计算 |
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| 引用本文： | 尹欣欣,陈继锋,刘佳敏.甘肃地区sPn震相研究及其震源深度计算[J].高原地震,2013,25(1):31-34. |
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| 作者姓名： | 尹欣欣 陈继锋 刘佳敏 |
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| 作者单位： | 1. 中国地震局兰州地震研究所,甘肃兰州,730000
2. 上海市地震局,上海,200000 |
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| 基金项目： | 中国地震局兰州地震研究所科技发展基金项目 |
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| 摘 要： | 通过对甘肃2012年5月2个M〉4．0级地震的震相分析，得出在震中距大于300km时，甘肃数字地震台网部分台站可记录到较清晰的sPn震相。采用sPn和Pn震相确定震源深度的方法，重新计算震源深度，并和甘肃地震台网中心所得的结果相比较，证明了该方法的可行性。
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| 关 键 词： | sPn震相 震源深度 震相特征 震中距 |
STUDY ON THE sPn PHASE AND CALCULATION OF THE FOCAL DEPTH IN GANSU PROVINCE |
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| YIN Xinxin
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CHEN Jifeng
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LIU Jiamin.STUDY ON THE sPn PHASE AND CALCULATION OF THE FOCAL DEPTH IN GANSU PROVINCE[J].Plateau Earthquake Research,2013,25(1):31-34. |
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| Authors: | YIN Xinxin CHEN Jifeng LIU Jiamin |
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| Institution: | 1. Lanzhou Institute of Seismology, CEA , Lanzhou 730000, China; 2. Earthquake Administration of Shanghai Municipality, Shanghai 200000, China) |
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| Abstract: | According to the analysis of the seismic phases of the two M 〉 4 earthquakes occurred in Gansu in May, 2012, Gansu digital seismograph network recorded the relatively clear sPn seismic phase in the area of more than 300 km around the epicenter. In this article, the method of using sPn and Pn seismic phases to calculate the seismic depth is adopted to recalculate the seismic depths of the two earthquakes, and the resuhs obtained from this calculation were compared with those gained by Gansu network center, this method is proved to be feasible. |
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| Keywords: | sPn seismic phase Focal depth Characteristics of seismic phase Epicentral distance |
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