English | 武汉大学 | 院长信箱
点击展开菜单
科研论文
当前位置: > 科学研究 > 科研论文 >

[SCI]Moho Modeling Using FFT Technique

时间:2017-05-03 来源:未知 点击:
作者:Chen, WJ (Chen, Wenjin)[ 1,2 ] ; Tenzer, R (Tenzer, Robert)[ 3 ]
PURE AND APPLIED GEOPHYSICS
: 174  : 4  : 1743-1757
DOI: 10.1007/s00024-017-1503-4
出版年: APR 2017
摘要
To improve the numerical efficiency, the Fast Fourier Transform (FFT) technique was facilitated in ParkerOldenburg's method for a regional gravimetric Moho recovery, which assumes the Earth's planar approximation. In this study, we extend this definition for global applications while assuming a spherical approximation of the Earth. In particular, we utilize the FFT technique for a global Moho recovery, which is practically realized in two numerical steps. The gravimetric forward modeling is first applied, based on methods for a spherical harmonic analysis and synthesis of the global gravity and lithospheric structure models, to compute the refined gravity field, which comprises mainly the gravitational signature of the Moho geometry. The gravimetric inverse problem is then solved iteratively in order to determine the Moho depth. The application of FFT technique to both numerical steps reduces the computation time to a fraction of that required without applying this fast algorithm. The developed numerical producers are used to estimate the Moho depth globally, and the gravimetric result is validated using the global (CRUST1.0) and regional (ESC) seismic Moho models. The comparison reveals a relatively good agreement between the gravimetric and seismic models, with the RMS of differences (of 4-5 km) at the level of expected uncertainties of used input datasets, while without the presence of significant systematic bias.
关键词
作者关键词:CrustgravitylithosphereMohospherical harmonics
KeyWords Plus:SPHERICAL HARMONIC-ANALYSISMORITZ INVERSE PROBLEMCRUSTAL THICKNESSGRAVITY-FIELDSEAWATER DENSITYISOSTATIC MODELHIGH-RESOLUTION;GOCE DATARECOVERYTRANSFORM
作者信息
通讯作者地址Chen, WJ (通讯作者)

http://images.webofknowledge.com/WOKRS524B8/images/zh_CN/expand.gif Wuhan Univ, Sch Geodesy & Geomat, 129 Luoyu Rd, Wuhan 430079, Peoples R China.
通讯作者地址: Chen, WJ (通讯作者)
http://images.webofknowledge.com/WOKRS524B8/images/zh_CN/expand.gif Univ Trieste, Dept Math & Geosci, Trieste, Italy.
地址:
http://images.webofknowledge.com/WOKRS524B8/images/zh_CN/expand.gif [ 1 ] Wuhan Univ, Sch Geodesy & Geomat, 129 Luoyu Rd, Wuhan 430079, Peoples R China
http://images.webofknowledge.com/WOKRS524B8/images/zh_CN/expand.gif [ 2 ] Univ Trieste, Dept Math & Geosci, Trieste, Italy
http://images.webofknowledge.com/WOKRS524B8/images/zh_CN/expand.gif [ 3 ] Univ West Bohemia, Fac Sci Appl, NTIS, Plzen, Czech Republic
电子邮件地址:chenwenjin-whu@gmail.com
基金资助致谢

基金资助机构 授权号
Chinese Scholarship Council (CSC)   
Czech Ministry of Education, Youth and Sport  LO1506 
查看基金资助信息   
出版商
SPRINGER BASEL AG, PICASSOPLATZ 4, BASEL, 4052, SWITZERLAND
类别 / 分类
研究方向:Geochemistry & Geophysics
Web of Science 类别:Geochemistry & Geophysics
文献信息
文献类型:Article
语种:English
入藏号: WOS:000398042000014
ISSN: 0033-4553
eISSN: 1420-9136
期刊信息
·         Impact Factor (影响因子): 1.677