| 利用sPn震相计算九江-瑞昌地区地震的震源深度 |
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| 引用本文： | 罗丽,肖孟仁,项月文,曾文敬,肖健.利用sPn震相计算九江-瑞昌地区地震的震源深度[J].大地测量与地球动力学,2012,32(Z1):34-36. |
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| 作者姓名： | 罗丽 肖孟仁 项月文 曾文敬 肖健 |
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| 作者单位： | 江西省地震局,南昌,330039 |
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| 摘 要： | 近震震相sPn与Pn到时差与震中距无关,只与震源深度和地壳模型有关.应用此方法,计算了发生在九江-瑞昌地区两次地震的震源深度,结果表明,利用区域台网sPn-Pn的到时差确定地震震源深度较为可信.根据华南地区速度模型,建立了九江-瑞昌地区sPn与Pn到时差与震源深度便查表.
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| 关 键 词： | sPn震相 Pn震相 到时差 震源深度 震相识别 |
CALCULATION OF FOCAL DEPTH IN JIUJIANG-RUICHANG REGION BY USING sPn PHASE |
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| Luo Li
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Xiao Mengren
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Xiang Yuewen
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Zeng Wenjing
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Xiao Jian.CALCULATION OF FOCAL DEPTH IN JIUJIANG-RUICHANG REGION BY USING sPn PHASE[J].Journal of Geodesy and Geodynamics,2012,32(Z1):34-36. |
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| Authors: | Luo Li Xiao Mengren Xiang Yuewen Zeng Wenjing Xiao Jian |
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| Institution: | (Earthquake Administration of Jiangxi Province,Nanchang 330039) |
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| Abstract: | The arrival-time difference between sPn and Pn is independent of epicentral distance,but only related to the focal depth and crustal model.We calculated the focal depth of two earthquakes occurred in Jiujiang-Ruichang region in Jiangxi province with the method and the results show that it is feasible.The table of the arrival-time difference between sPn and Pn and focal depth in Jiujiang-Ruichang region was established based on the velocity model of the South China area. |
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| Keywords: | sPn phase Pn phase arrival-time difference focal depth phase identification |
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