摘要
迄今为止,想直接利用某一种重力异常曲线求解倾斜台阶类隐伏地质体的物性和几何参数是十分困难的,一般只能从异常曲线特征上作定性分析详细分析了倾斜台阶Δg重力异常的理论公式及其特征点列的性质,提出了倾斜台阶的规范重力异常、规范特征点及其序列以及差比变换等新概念,建立了直接利用Δg曲线反演倾斜台阶全部未知参数的一种新解法──规范特征点序列灰关联反演法,并对该方法进行了成功的模型试算验证.
It has been very difficult up to now that a certain kind of the gravity anomaly curves can be directly applied to the solution to the physical and geometrical parameters of the inclined step-like buried geological body. Generally speaking, the qualitative analysis can be made in terms of the anomaly curve feature. In this paper, a detailed analysis is firstly made of the theoretical equation of the gravity anomaly Δg for inclined steps, and its characteristic point sequence. Secondly, this paper presents the normalized gravity anomalies, normalized characteristic points and their apuences, and differential transformation for inclined steps. Thirdly, this paper establishes the gray-correlated inversion of the normalized characteristic point sequence, a new solution to the inversion of all the unknown paramters for inclined steps, directly by means of the Δg curve. Finally, this new methed is successfully proved by means of medel pilot calculation.
出处
《地球科学(中国地质大学学报)》
EI
CAS
CSCD
北大核心
1999年第5期516-518,共3页
Earth Science-Journal of China University of Geosciences
基金
国家自然科学基金!49874027
国土资源部矿产资源定量预测及勘查评价开放研究实验室基金
关键词
倾斜台阶
重力异常
重力勘探
灰关联分析
探矿
inclined step, normalized gravity anomaly, normalized characteristic point, differential transformation, gray correlation analysis