Choice of suitable regional and residual gravity maps, the case of the South-West Cameroon zone

作     者：Fidèle Koumetio Donatien Njomo Constant Tatchum Noutchogwe Eric Ndoh Ndikum Sévérin Nguiya Alain-Pierre Kamga Tokam 

作者机构：Department of Physics Faculty of Science University of Dschang Department of Physics Faculty of Science University of Yaounde I Department of Physics ENS Bambili University of Bamenda Department of Fundamental Sciences H.T.T.T.C.Bambili-Bamenda University of Bamenda Department of Physics Faculty of Genial Engineering University of Douala 

出 版 物：《Earth and Planetary Physics》 (地球与行星物理（英文版）)

年 卷 期：2019年第3卷第1期

页      面：26-32页

核心收录：

学科分类：0709[理学-地质学] 07[理学] 0708[理学-地球物理学] 0706[理学-大气科学] 0816[工学-测绘科学与技术] 0704[理学-天文学] 0825[工学-航空宇航科学与技术] 

主　　题：gravity regional anomaly residual anomaly upward continuation correlation factors intrusive body 

摘      要：The quantitative interpretation of gravity anomalies due to shallow structures needs separation between long wavelength anomalies(regional anomalies) and short wavelength anomalies(residual anomalies).The regional-residual field separation can be carried out using the polynomial *** this case, the so-called regional field of order n is treated as a polynomial of degree *** present study shows that the degree n must vary between a smallest value n_(min) and a maximum value n_(max).This article presents a method to process gravity data that allows determination of n_(min) and n_(max) for a given study *** apply the method to gravity data of the South-West Cameroon *** this chosen study area, we find that regional anomaly maps of orders ranging from 1 to 9 and residual anomaly maps of orders ranging from 1 to 8 can be used for suitable *** analyses show that one may need residual anomaly maps of several orders to perform satisfactory quantitative interpretation of the different intrusive bodies found in a given area.