| 用远震接收函数反演福建地区宽频带台站下方莫霍界面深度 |
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| 引用本文： | 袁丽文,郑斯华.用远震接收函数反演福建地区宽频带台站下方莫霍界面深度[J].华南地震,2009,29(3):85-97. |
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| 作者姓名： | 袁丽文 郑斯华 |
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| 作者单位： | 福建省地震局,福建,福州,350003 |
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| 基金项目： | 福建省地震局科研项目基金 |
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| 摘 要： | 收集福建省“九五”数字地震遥测台网中8个宽频带台站的远震波形资料，应用接收函数的研究方法计算各个台站下方的接收函数。采用非线性的反演方法获得这些台站下方的S波速度结构．确定这些台站下方莫霍界面深度的分布情况。分析得到的反演结果，福建地区莫霍面的起伏不大．平均的地壳厚度约为32km。在0～2km之间均存在一层低速层，这与地表覆盖着一层松散的沉积层是相对应的。内陆地区台站附近莫霍界面深度较沿海地区略高，沿海台站的莫霍界面深度北部略高于南部。
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| 关 键 词： | 接收函数 反演 莫霍界面深度 福建地区 |
Moho Depths beneath Broad-Band Stations in Fujian Area Inversed by Teleseismic Receiver Function |
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| YUAN Liwen,ZHENG Sihua.Moho Depths beneath Broad-Band Stations in Fujian Area Inversed by Teleseismic Receiver Function[J].South China Journal of Seismology,2009,29(3):85-97. |
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| Authors: | YUAN Liwen ZHENG Sihua |
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| Institution: | YUAN Liwen and ZHENG Sihua (Earthquake Administration of Fujian Province, Fuzhou 350003, China) |
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| Abstract: | Based on some teleseismic data collected from seismostations of Fujian digital network （＂Ninth Five Year Plan＂ network） , we obtained the receiver functions of these stations by the receiver function method, and inversed the crustal S-wave velocity structure under these stations by non-linear inversion method to calculate the depths of Moho. In view of the inversion results of 8 stations, the depth of Moho varies a little, and the average crustal thickness is about 32km. There exists a low velocity layer between 0-2km underground, which might be caused by the loose sediment covered on the surface. The Moho depth of inland areas is a little deeper than coastal areas, and becomes deeper from south to north in coastal areas. |
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| Keywords: | Receiver function Inversion Moho depth Fujian area |
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