| 用多道反褶积方法测定台站接收函数 |
| |
| 引用本文： | 吴庆举,李永华,张瑞青,张乃铃.用多道反褶积方法测定台站接收函数[J].地球物理学报,2007,50(3):791-796. |
| |
| 作者姓名： | 吴庆举 李永华 张瑞青 张乃铃 |
| |
| 作者单位： | 中国地震局地球物理研究所, 北京100081 |
| |
| 基金项目： | 国家自然科学基金(40274029)资助 |
| |
| 摘 要： | 本文提出了一种在时间域用多道反褶积测定台站接收函数的方法, 以提高台站接收函数的测量精度与分辨率.在单道反褶积的基础上，选取若干个质量较好的远震P波波形事件，构成多道信号，以垂直分量为输入，径向和切向分量作为期望输出，依据最小二乘，设计多道滤波器，提取接收函数.合成地震图与观测地震图的检验表明, 多道滤波方法能有效地测定台站接收函数，特别是多道反褶积能够有效地恢复地壳上地幔间断面所产生的弱转换波震相.
|
| 关 键 词： | 接收函数 反褶积 多道滤波器 |
| 文章编号： | 0001-5733（2007）03-0791-06 |
| 收稿时间： | 2005-11-28 |
| 修稿时间： | 2005-11-28 |
Receiver function estimated by multi-channel deconvolution |
| |
| WU Qing-Ju,LI Yong-Hua,ZHANG Rui-Qing,ZHANG Nai-Ling.Receiver function estimated by multi-channel deconvolution[J].Chinese Journal of Geophysics,2007,50(3):791-796. |
| |
| Authors: | WU Qing-Ju LI Yong-Hua ZHANG Rui-Qing ZHANG Nai-Ling |
| |
| Institution: | Institute of Geophysics, China Earthquake Administration, Beijing 100081,China |
| |
| Abstract: | Time-domain multi-channel deconvolution is put forward to estimate receiver function, to improve resolution. Based on the deconvolution results of individual teleseismic P waveforms, a number of events with good quality are selected to form multi-channel signals, the vertical components are regarded as inputs, and radial and transverse components are taken as expected outputs. Least-square error is used to design the multi-channel filter, to get the common filter factors, i.e., receiver function. Both synthetic and real data experiments show that multi-channel deconvolution is an effective approach to measure receiver function, especially, it can recover the weak converted phases from the upper mantle. |
| |
| Keywords: | Receiver function Deconvolution Multi-channel filter |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《地球物理学报》浏览原始摘要信息 |
| 点击此处可从《地球物理学报》下载免费的PDF全文 |
|
