CRUSTAL STRUCTURE BENEATH CAMEROON FROM
EGM2008
Ngatchou Heutchi Evariste1，2，Liu Genyou1，Tabod Charles Tabod2，Kamguia Joseph3，Nguiya Severin4，Tiedeu Alain5 and KE Xiaoping11State Key Laboratory of Geodesy and Earth’s Dynamics，Institute of Geodesy and Geophysics，Chinese Academy of Sciences，Wuhan 430077，China
【摘 要】Abstract: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 ETOPO1 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． 【期刊名称】大地测量与地球动力学（英文版）
Crustal structure beneath Cameroon from EGM2008
