| 用数字台网的面波资料研究中国大陆的地壳上地幔结构 |
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| 引用本文： | 陈国英,胡家富.用数字台网的面波资料研究中国大陆的地壳上地幔结构[J].地震研究,1991,14(3):239-246. |
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| 作者姓名： | 陈国英 胡家富 |
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| 作者单位： | 国家地震局地球物理所，国家地震局地球物理所，国家地震局地球物理所，中国科学院地球物理所 北京，100081，北京，100081，北京，100081，北京，100101 |
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| 摘 要： | 本文采用适配滤波频时分析技术对中国数字地震台网记录的长周期面波资料进行处理,获得了路经中国大陆的23条波路径的基阶瑞雷面波群速度频散曲线,频散曲线的周期从10.5秒至150秒。使用HARKRIDER面波反演程序反演了各条波路径的平均地壳上地幔结构。所得模型直至230km。深处仍有较好的分辨。根据所得结果将中国大陆划分为四个构造单元。各构造单元之间差异明显且在某些单元内部横向变化也很显著。
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| 关 键 词： | 面波 大陆 地壳 上地幔 数字台网 |
A STUDY OF UPPER MANTLE STRUCTURE OF CHINACONTINENT BY SURFACE WAVE DATA FROMCHINA DIGITAL-NETWORK |
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| Chen Guoying He Zhengqin Chen Guangying.A STUDY OF UPPER MANTLE STRUCTURE OF CHINACONTINENT BY SURFACE WAVE DATA FROMCHINA DIGITAL-NETWORK[J].Journal of Seismological Research,1991,14(3):239-246. |
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| Authors: | Chen Guoying He Zhengqin Chen Guangying |
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| Abstract: | The adaptive filtering frequency-time analysis is used to process the long-term surface wave data recorded by China Digital-Network in this paper. The frequency scattering curves of fundamental Rayieigh wave group velocity travelled along 23 wave paths in China continent are obtained, with periods ranging 10.5-150 s. The average upper mantle structure along those wave paths is reversed by the Harkrider Program. The obtained model presents a better resolution as deep as 230 km downwards. Based on the obtained results China continent has been divided into 4 structural units, between which there exist striking differences and also within some of which there exists an obvious lateral variation. |
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| Keywords: | Surface wave Group velocity Frequency scattering Reversion Crust Upper mantle |
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