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Data Details

Gravity-derived Crustal Thickness Dataset in Southwest Indian Ocean


LIU Chiheng1LI Jianghai1
1 School of Earth and Space Sciences，Peking University，Beijing 100871，China

DOI:10.3974/geodb.2018.08.05.V1

Published:Dec. 2018

Visitors：8691       Data Files Downloaded：33      
Data Downloaded：453.42 MB      Citations：

Key Words：

Southwest Indian Ocean,Crustal thickness,mantle Bouguer anomaly,Residual mantle Bouguer anomaly,Chinese Journal of Geophysics

Abstract：

The global satellite free-air gravity anomaly (Sandwell et al., 2014), satellite bathymetry (GEBCO_2014), sediment thickness (Divins, 2003) and oceanic lithosphere crust age data (Muller et al., 2008) was utilized to compute mantle Bouguer anomaly (MBA) and residual mantle Bouguer anomaly (RMBA) in Southwest Indian Ocean. Residual mantle Bouguer was used to inversion crustal thickness. The Gravity-derived Crustal Thickness Dataset in Southwest Indian Ocean is consisted of: (1) Bouguer gravity anomaly data of southwest Indian Ocean basin with grid spacing of 5'; (2) the residual mantle Bouguer gravity anomaly data of southwest Indian Ocean basin with grid spacing of 5'; (3) oceanic crust thickness data of southwest Indian Ocean basin with grid spacing of 5'. The geolocation of the dataset ranges from 0° ~ 72°E, 20°S ~ 60°S. The dataset is archived at .xyz and .grd data formats, which is composed to six data files with data size of 69.2 MB (Compressed to one single file with data size of 13.7 MB). The analysis paper based on the dataset was published at Chinese Journal of Geophysics, Vol.61, No.7, 2018.

Foundation Item：

State Oceanic Administration, P. R. China (DY135-S1-1-03); Ministry of Science and Technology of P. R. China (2016YFC0503301, 2016ZX05033002-007)

Data Citation：

LIU Chiheng, LI Jianghai. Gravity-derived Crustal Thickness Dataset in Southwest Indian Ocean[J/DB/OL]. Digital Journal of Global Change Data Repository, 2018. https://doi.org/10.3974/geodb.2018.08.05.V1.

Data Product:

ID Data Name Data Size Operation
1 CrustalThicknessSWIndianOcean.rar 14069.63KB
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