| 南海及邻区地壳上地幔三维S波速度结构的面波波形反演>. |
| |
| 引用本文： | 曹小林,朱介寿,赵连锋,曹家敏,洪学海.南海及邻区地壳上地幔三维S波速度结构的面波波形反演>.[J].地震学报,2001,23(2):113-124. |
| |
| 作者姓名： | 曹小林 朱介寿 赵连锋 曹家敏 洪学海 |
| |
| 作者单位： | 1）中国长沙410073国防科技大学计算机学院
2）中国成都610059成都理工学院信息工程与地球物理系 |
| |
| 基金项目： | 国家自然科学基金!重点项目 ( 4973 4 1 50 )，国家高性能计算基金资助 |
| |
| 摘 要： | 对南海及邻区中国数字地震台网４个台站接收到的328条长周期地震记录的面波波形进行分块波形反演．分块波形反演把大尺度的优化问题转化为小尺度的优化问题，采用非线性优化方法求解，从而得到南海及邻区22网格划分、从地表深至430ｋｍ 的地壳上地幔三维S波速度结构，并用检验板法进行了分辨率分析．结果表明，海域、岛弧和大陆在速度分布、岩石圈和软流圈存在明显的结构差异．
|
| 关 键 词： | 南海及邻区 面波波形 分块波形反演 三维S波速度结构 |
| 文章编号： | 0253-3782(2001)02-0113-12 |
| 修稿时间： | 1999年12月21 |
THREE DIMENSIONAL SHEAR WAVE VELOCITY STRUCTURE OF CRUST AND UPPER MANTLE IN SOUTH CHINA SEA AND ITS ADJACENT REGIONS BY SURFACE WAVEFORM INVERSION |
| |
| Cao Xiaolin,Zhu Jieshou,Zhao Lianfeng,Cao Jiamin,Hong Xuehai.THREE DIMENSIONAL SHEAR WAVE VELOCITY STRUCTURE OF CRUST AND UPPER MANTLE IN SOUTH CHINA SEA AND ITS ADJACENT REGIONS BY SURFACE WAVEFORM INVERSION[J].Acta Seismologica Sinica,2001,23(2):113-124. |
| |
| Authors: | Cao Xiaolin Zhu Jieshou Zhao Lianfeng Cao Jiamin Hong Xuehai |
| |
| Abstract: | We assembled approximately 328 seismic records. The data set was from 4 digitally recording long-period and broadband stations of CDSN. We carried out the inversion based on the partitioned waveform inversion (PWI). It partitions the large-scale optimization problem into a number of independent small-scale problems. We adopted surface waveform inversion with an equal block (2°×2°) discretization in order to acquire the images of shear velocity structure at different depths (from surface to 430 km) in the crust and upper-mantle. The resolution of all these anomalies has been established with “check-board” sensitivity tests. These results show significant difference in velocity, lithosphere and asthenosphere structure between South China Sea and its adjacent regions. |
| |
| Keywords: | South China Sea and its adjacent regions surface waveform partitioned waveform inversion three dimensional shear wave velocity structure |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《地震学报》浏览原始摘要信息 |
|
点击此处可从《地震学报》下载全文 |
