| 上海佘山(SSE)地震台站下方170km深度低速界面研究 |
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| 引用本文： | 沈旭章.上海佘山(SSE)地震台站下方170km深度低速界面研究[J].地球物理学报,2011,54(3):698-705. |
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| 作者姓名： | 沈旭章 |
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| 作者单位： | 1. 中国地震局兰州地震研究所,兰州 730000;
2. 中国地震局地震预测研究所兰州科技创新基地,兰州 730000;
3. 东京大学地震研究所,东京 113-0032 |
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| 基金项目： | 国家自然科学基金项目，中国地震局地震预测研究所基本科研业务专项 |
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| 摘 要： | 利用接收函数多次波研究了上海SSE台站下方170 km深度低速界面.通过全波场理论接收函数模拟,对观测资料进行了合理解释.结合该区域已有研究成果,推断该低速界面可能由软流圈中的低速异常体引起.另一方面,该结果也和面波层析成像结果相一致.
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| 关 键 词： | 接收函数 多次波 软流圈 低速异常 |
| 收稿时间： | 2010-03-10 |
Study on the low-velocity discontinuity at the depth of 170 km beneath SSE station in Shanghai,China |
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| SHEN Xu-Zhang.Study on the low-velocity discontinuity at the depth of 170 km beneath SSE station in Shanghai,China[J].Chinese Journal of Geophysics,2011,54(3):698-705. |
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| Authors: | SHEN Xu-Zhang |
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| Institution: | 1. Lanzhou Institute of Seismology, China Earthquake Administration, Lanzhou, 730000, China;
2. Lanzhou Base of Institute of Earthquake Science, China Earthquake Administration, Lanzhou 73000, China;
3. Earthquake Research Institute, University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-0032, Japan |
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| Abstract: | The low-velocity discontinuity at 170 km depth was determined with multiples on the receiver functions beneath the SSE station in Shanghai, China. The synthetic receiver functions calculated from full-wave field seismograms explain the observed results perfectly. This low-velocity discontinuity might result from the low velocity abnormities in asthenosphere. The result is also consistent with the result from surface-wave tomography. |
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| Keywords: | Receiver functions Multiples Asthenosphere Low velocity abnormities |
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