SCSIO OpenIR  > 中科院边缘海地质重点实验室
Joint inversion of P-wave velocity and Vp-Vs ratio: imaging the deep structure in NE Japan
Zhi, W
2014
发表期刊APPLIED GEOPHYSICS
ISSN1672-7975
卷号11期号:2页码:119-127
摘要A new inversion scheme is presented to obtain three-dimensional images of P-wave velocity (Vp) and P S-wave velocity ratio (Vp/Vs) using P- and S-phase pairs, i.e., the same source receiver pairs for the P- and S-wave arrival-time data. The S-wave velocity (Vs) was separately inverted using the S-phase arrival times. The earthquake hypocenters were simultaneously relocated in the joint inversion. The method considers the Vp/Vs anomaly as a model parameter in the inversion. The proposed method thus provides a more robust calculation of the Vp/Vs anomaly than the conventional method of dividing Vp by Vs. The method also takes into account the ray path difference between P- and S-waves, and hence yields a less biased Vp Vs ratio than the method of inverting S P-wave data for Vp and Vp/Vs anomalies under the assumption of identical P and S ray paths. The proposed method was used to image the crust and upper mantle in northeastern (NE) Japan taking advantage of a large number of high-quality arrival times of P- and S-wave source receiver pairs. The inverted structures suggest that the subducting slab of the Pacific plate is an inclined zone of high-Vp and Vs anomalies with low Vp/Vs perturbation. The mantle wedge is characterized by low-Vp, low-Vs, and high-Vp/Vs anomalies at shallow depths beneath active volcanoes. These features are also observed at greater depths in the back-arc region. Although these features have been previously reported, the Vp/Vs anomaly pattern obtained in this study shows much less scatter and is much better correlated with the seismic velocity perturbation patterns than previous studies. The proposed method can be used, in conjunction with velocity anomaly patterns, to quantify thermal processes associated with plate subduction.
部门归属[Zhi, Wang] Chengdu Univ Technol, State Key Lab Oil & Gas Reservoir Geol & Exploita, Chengdu 610059, Peoples R China ; [Zhi, Wang] Chinese Acad Sci, South China Sea Inst Oceanol, Key Lab Marginal Sea Geol, Guangzhou 510301, Guangdong, Peoples R China
关键词Seismic Tomography p And s Source-receiver Pairs Pacific Subduction Zone Mantle Wedge
学科领域Geochemistry & Geophysics
资助者Chinese Academy of Sciences [17314059]; Natural Science Foundation of China [41372229]; Sichuan Province Outstanding Youth Foundation [2010JQ0033. KYTD201002]; State Key Laboratory of Geohazard Prevention and Geoenvironment Protection; Research Foundation for the Doctoral Program of Higher Education of China [20115122110007, 20125122110002] ; Chinese Academy of Sciences [17314059]; Natural Science Foundation of China [41372229]; Sichuan Province Outstanding Youth Foundation [2010JQ0033. KYTD201002]; State Key Laboratory of Geohazard Prevention and Geoenvironment Protection; Research Foundation for the Doctoral Program of Higher Education of China [20115122110007, 20125122110002] ; Chinese Academy of Sciences [17314059]; Natural Science Foundation of China [41372229]; Sichuan Province Outstanding Youth Foundation [2010JQ0033. KYTD201002]; State Key Laboratory of Geohazard Prevention and Geoenvironment Protection; Research Foundation for the Doctoral Program of Higher Education of China [20115122110007, 20125122110002] ; Chinese Academy of Sciences [17314059]; Natural Science Foundation of China [41372229]; Sichuan Province Outstanding Youth Foundation [2010JQ0033. KYTD201002]; State Key Laboratory of Geohazard Prevention and Geoenvironment Protection; Research Foundation for the Doctoral Program of Higher Education of China [20115122110007, 20125122110002]
URL查看原文
收录类别sci
资助项目海洋地质
资助者Chinese Academy of Sciences [17314059]; Natural Science Foundation of China [41372229]; Sichuan Province Outstanding Youth Foundation [2010JQ0033. KYTD201002]; State Key Laboratory of Geohazard Prevention and Geoenvironment Protection; Research Foundation for the Doctoral Program of Higher Education of China [20115122110007, 20125122110002] ; Chinese Academy of Sciences [17314059]; Natural Science Foundation of China [41372229]; Sichuan Province Outstanding Youth Foundation [2010JQ0033. KYTD201002]; State Key Laboratory of Geohazard Prevention and Geoenvironment Protection; Research Foundation for the Doctoral Program of Higher Education of China [20115122110007, 20125122110002] ; Chinese Academy of Sciences [17314059]; Natural Science Foundation of China [41372229]; Sichuan Province Outstanding Youth Foundation [2010JQ0033. KYTD201002]; State Key Laboratory of Geohazard Prevention and Geoenvironment Protection; Research Foundation for the Doctoral Program of Higher Education of China [20115122110007, 20125122110002] ; Chinese Academy of Sciences [17314059]; Natural Science Foundation of China [41372229]; Sichuan Province Outstanding Youth Foundation [2010JQ0033. KYTD201002]; State Key Laboratory of Geohazard Prevention and Geoenvironment Protection; Research Foundation for the Doctoral Program of Higher Education of China [20115122110007, 20125122110002]
WOS记录号WOS:000339307200001
引用统计
被引频次:2[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.scsio.ac.cn/handle/344004/10620
专题中科院边缘海地质重点实验室
推荐引用方式
GB/T 7714
Zhi, W. Joint inversion of P-wave velocity and Vp-Vs ratio: imaging the deep structure in NE Japan[J]. APPLIED GEOPHYSICS,2014,11(2):119-127.
APA Zhi, W.(2014).Joint inversion of P-wave velocity and Vp-Vs ratio: imaging the deep structure in NE Japan.APPLIED GEOPHYSICS,11(2),119-127.
MLA Zhi, W."Joint inversion of P-wave velocity and Vp-Vs ratio: imaging the deep structure in NE Japan".APPLIED GEOPHYSICS 11.2(2014):119-127.
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。