| Focal Depth of Earthquakes in the Qinghai-Xizang Plateau and Its Tectonic Implication |
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| 作者姓名： | Zheng SihuaCenter for Analysis and Prediction SSB Beijing China |
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| 作者单位： | Zheng SihuaCenter for Analysis and Prediction，SSB，Beijing 100036，China |
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| 基金项目： | This project was spousored by the state science and Technology Commission ,China. |
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| 摘 要： | In the previous work of the present study,moment tensors of 11 major earthquakes in the Qinghai-Xizang Plateau and its surrounding region from 1966 to 1980 are estimated by generalized inversion technique.The seismic source time function and focal depth are immediately determined in the inversion.The results indicated that all earthquakes investigated here are shallow events within the upper crust.The purpose of this paper is to present a summary of the distribution of focal depths of earthquakes in and near the Qinghai-Xizang Plateau from the above result,combining the focal depths of 78 significant earthquakes from 1964 to 1986,which are relocated individually by other authors,as well as to discuss its tectonic implication.
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Focal Depth of Earthquakes in the Qinghai-Xizang Plateau and Its Tectonic Implication |
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| Zheng SihuaCenter for Analysis and Prediction,SSB,Beijing ,China.Focal Depth of Earthquakes in the Qinghai-Xizang Plateau and Its Tectonic Implication[J].Earthquake Research in China,1996(1). |
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| Authors: | Zheng SihuaCenter for Analysis and Prediction SSB Beijing China |
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| Institution: | Zheng SihuaCenter for Analysis and Prediction,SSB,Beijing 100036,China |
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| Abstract: | In the previous work of the present study,moment tensors of 11 major earthquakes in the Qinghai-Xizang Plateau and its surrounding region from 1966 to 1980 are estimated by generalized inversion technique.The seismic source time function and focal depth are immediately determined in the inversion.The results indicated that all earthquakes investigated here are shallow events within the upper crust.The purpose of this paper is to present a summary of the distribution of focal depths of earthquakes in and near the Qinghai-Xizang Plateau from the above result,combining the focal depths of 78 significant earthquakes from 1964 to 1986,which are relocated individually by other authors,as well as to discuss its tectonic implication. |
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| Keywords: | Qinghai-Xizang Plateau Focal depth Rock heat state Rock thermal state Thermal state of the lithosphere |
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