IOCAS-IR  > 海洋地质与环境重点实验室
Upper mantle density modelling for large-scale Moho gravity inversion: case study on the Atlantic Ocean
Bai, Yongliang1,2; Li, Mei3; Wu, Shiguo4; Dong, Dongdong5; Gui, Zhou1,2; Sheng, Jie1,2; Wang, Zhenjie1,2
2019-03-01
Source PublicationGEOPHYSICAL JOURNAL INTERNATIONAL
ISSN0956-540X
Volume216Issue:3Pages:2134-2147
Corresponding AuthorBai, Yongliang(yongliang.bai1986@gmail.com)
AbstractMoho geometry is an important parameter in geodynamic understanding. Seismic methods can provide accurate burial depths, but the coverage is low; the widely used CRUST1.0 model under oceans is greatly restricted by a low coverage of seismic data. Gravity inversion can provide high coverage of Moho undulations, but the accuracy is relatively low. Observed gravity anomalies integrate gravity effects induced by 3-D density perturbations in the Earth. For studies of the geometry of a specific density interface based on gravity, all gravity effects caused by other interfaces should be removed from the total anomaly map based on 3-D density distributions. We use temperature-based and velocity-based methods to model the lithospheric/upper mantle density; two temperature-calculation parameter models (PSM and GDH1), three thermal expansion coefficients (alpha) and three scaling ratio models are tested for each method. PSM and GDH1 result in a similar mantle gravity anomaly (MGA) pattern but different MGA average values when the alpha model is the same. Different alpha and scaling ratio models result in different Moho inversion results, and the optimal result from the temperature-based method has an RMS of 3.2 km with the CRUST1.0 model. A comparison between this inversion result and the CRUST1.0 model shows that the temperature-based method performs well in reproducing Moho geometry in the main part of the Atlantic Ocean, especially in the central basin. The optimal result from the velocity-based method has an RMS of 4.3 km with the CRUST1.0 model. Compared with the temperature-based method, the velocity-based method performs worse in the central basin but better in regions with low-velocity and low-density mantle away from the mid-ocean ridge.
KeywordStructure of the Earth Gravity anomalies and Earth structure Atlantic Ocean
DOI10.1093/gji/ggz003
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[41506055] ; National Natural Science Foundation of China[41476046] ; National Natural Science Foundation of China[41476042] ; National Natural Science Foundation of China[U170120019] ; National Natural Science Foundation of China[41506085] ; Fundamental Research Funds for the Central Universities China[17CX02003A] ; Open Fund of the Key Laboratory of Marine Geology and Environment, CAS[MGE2017KG01]
WOS Research AreaGeochemistry & Geophysics
WOS SubjectGeochemistry & Geophysics
WOS IDWOS:000465601500044
PublisherOXFORD UNIV PRESS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.qdio.ac.cn/handle/337002/161431
Collection海洋地质与环境重点实验室
Corresponding AuthorBai, Yongliang
Affiliation1.China Univ Petr, Sch Geosci, Qingdao 266580, Shandong, Peoples R China
2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Mineral Resources, Qingdao 266071, Peoples R China
3.Longitude & Latitude Ctr Qingdao Ecotech Dev Zone, Qingdao 266555, Shandong, Peoples R China
4.Chinese Acad Sci, Inst Deep Sea Sci & Engn, Sanya 572000, Peoples R China
5.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China
Recommended Citation
GB/T 7714
Bai, Yongliang,Li, Mei,Wu, Shiguo,et al. Upper mantle density modelling for large-scale Moho gravity inversion: case study on the Atlantic Ocean[J]. GEOPHYSICAL JOURNAL INTERNATIONAL,2019,216(3):2134-2147.
APA Bai, Yongliang.,Li, Mei.,Wu, Shiguo.,Dong, Dongdong.,Gui, Zhou.,...&Wang, Zhenjie.(2019).Upper mantle density modelling for large-scale Moho gravity inversion: case study on the Atlantic Ocean.GEOPHYSICAL JOURNAL INTERNATIONAL,216(3),2134-2147.
MLA Bai, Yongliang,et al."Upper mantle density modelling for large-scale Moho gravity inversion: case study on the Atlantic Ocean".GEOPHYSICAL JOURNAL INTERNATIONAL 216.3(2019):2134-2147.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Bai, Yongliang]'s Articles
[Li, Mei]'s Articles
[Wu, Shiguo]'s Articles
Baidu academic
Similar articles in Baidu academic
[Bai, Yongliang]'s Articles
[Li, Mei]'s Articles
[Wu, Shiguo]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Bai, Yongliang]'s Articles
[Li, Mei]'s Articles
[Wu, Shiguo]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.