Scientific publications
Ngatchou Heutchi Evariste
Other affiliations: Chinese Academy of Sciences · Institute of Geodesy and Geophysics
Tiedeu Alain
Liu Genyou* (Corresponding author)
Other affiliations: Institute of Geodesy and Geophysics
K.E. Xiaoping
Other affiliations: Institute of Geodesy and Geophysics
Joseph Kamguia
Sévérin Nguiya
Geodesy and Geodynamics
We used the Earth Gravitational Model (EGM2008) data sets to analyze the regional gravity anomalies and to study the underground structures in Cameroon. We first created a high-resolution Free-Air anomaly database, then corrected the gravity field of the topographic effect by using ETOPOl DEM with a resolution of 0.01° to obtain the Bouguer anomaly, then applied a multi-scale wavelet-analysis technique to separate the gravity-field components into different parts of shallow-to-deep origins, and finally used the logarithmic power spectrum technique to obtain detailed images and corresponding source depths as well as certain lateral inhomogeneity of structure density. The anomalies of shallow origin show successive elongated gravity “highs” and “lows” attributable to subsurface Tertiary and lower Cretaceous undulations. Our results are in good agreement with previous investigations.
