重力地形校正研究进展及展望  

Research Progress and Prospect of Gravity Topographic Correction

作　　者：张菲菲 王林[1] 马静 王万银[1,3,4] 李建国[5] 周新鹏 李倩[5] Zhang Feifei;Wang Lin;Ma Jing;Wang Wanyin;Li Jianguo;Zhou Xinpeng;Li Qian(College of Geology Engineering and Geomatics,Chang’an University,Xi’an 710054,China;Qingdao Institute of Marine Geology,Qingdao 266071,Shandong,China;National Engineering Research Center of Offshore Oil and Gas Exploration,Beijing 100028,China;Key Laboratory of Marine Geology&Environment,Chinese Academy of Sciences,Qingdao 266071,Shandong,China;Geophysical and Geochemical Exploration Institute of Shanxi Province,Yuncheng 044004,Shanxi,China)

机构地区：[1]长安大学地质工程与测绘学院,西安710054 [2]青岛海洋地质研究所,山东青岛266071 [3]海洋油气勘探国家工程研究中心,北京100028 [4]中国科学院海洋地质与环境重点实验室,山东青岛266071 [5]山西省地球物理化学勘查院,山西运城044004

出　　处：《吉林大学学报(地球科学版)》2025年第1期254-273,共20页Journal of Jilin University:Earth Science Edition

基　　金：国家重点研发计划项目(2017YFC0602202);山西省政府购买服务项目(201908)。

摘　　要：重力地形校正的目的是消除地形质量对观测重力的影响,包括传统地形校正和中间层校正,是重力勘探外部校正中最重要的一环,也是影响重力勘探精度的关键因素。长期以来,研究人员对地形校正计算模型、计算方法、计算精度的影响因素等开展了大量研究,但忽视了不同测量方式(陆、海、空、井)过程中地形校正方法的统一,以及不同影响因素变化规律及选取原则的讨论。本文详细介绍了不同测量方式地形校正的原理、计算方法及精度影响因素的研究进展及展望,指出地形校正方法中存在不同重力测量方式地形校正方法不统一、重力异常意义不统一、精度影响因素研究程度不同的问题。针对不同重力测量方式地形校正方法的基本原理,制定统一的地形校正规范成为重力数据统筹使用的必然。通过讨论分析地形网格间距、地形校正半径及地层密度对地形校正精度的影响,提出需要开展地形网格间距、地形校正半径与计算精度之间规律性关系的研究,实现地形网格间距和地形校正半径在实际工作中的灵活选取,提高方法的适用性。The purpose of gravity topographic correction is to eliminate the influence of terrain quality on observed gravity,including traditional topographic correction and intermediate layer correction,which is the most important part of external correction of gravity exploration,and also the key factor affecting the accuracy of gravity exploration.For a long time,researchers have carried out a lot of research on calculation models of topographic correction,calculation methods,and influencing factors of calculation accuracy,but neglected the unification of topographic correction methods in the process of different measurement methods such as land gravity,ship-borne gravity,air-born gravity and well gravity,as well as the discussion on the variation law and selection principles of different influencing factors.This paper introduces in detail the research progress and prospect of the fundamental theory,the calculation methods,and the influencing factors of topographic correction.Simultaneously,there are some problems in topographic correction methods,such as the topographic correction methods of different gravity measurement techniques are not uniform,the significance of gravity anomaly is not uniform,and the research degree of influencing factors of topographic correction accuracy is different.According to the basic principle of topographic correction methods with different gravity measurement methods,it is necessary to formulate a unified topographic correction standard for the overall use of gravity data.Through discussing and analyzing the influence of topographic grid spacing,topographic correction radius and stratum density on topographic correction accuracy,it is proposed that the regular relationship between topographic grid sapcing,topographic correction radius and stratum density should be studied to realize the flexible selection of grid spacing and correction radius in practical work and improve the applicability of topographic correction methods.

关 键 词：重力地形校正 地形质量 计算模型 计算方法 影响因素 研究进展及展望 

分 类 号：P631.1[天文地球—地质矿产勘探]