物探与化探2026，Vol.50Issue(2)：277-291,15.DOI:10.11720/wtyht.2026.1161
大比例尺重力精细化改正方法
Fine-scale correction methods for large-scale gravity survey data
摘要
Abstract
Performing various corrections to the measured gravity values relative to a datum plane serves as a necessary step in obtain-ing the values of Bouguer gravity anomalies.Currently,the various corrections of large-scale gravity survey data primarily follow the re-quirements and methods of regional gravity surveys.The obtained Bouguer gravity anomalies often contain false anomalies,failing to ac-curately interpret the relevant properties and details of targets.Moreover,there exists neither systematic research on the variable-density terrain correction for large-scale gravity survey data nor publicly available variable-density correction calculation software.Therefore,this study proposed a set of fine-scale correction methods for large-scale gravity survey data.Specifically,the traditional datum plane for various corrections was elevated.Based on the rating of density property data,the variable-density generalized terrain correction method was employed to integrally calculate the values of traditional terrain and intermediate layer corrections.The Li-Gotze96 equation was ap-plied to integrally calculate the values of traditional latitude and height corrections,as well as the height correction value based on the custom datum plane.A new equation for calculating the value of Bouguer gravity anomalies was derived.Moreover,the universal gravi-ty survey correction calculation software was developed accordingly.The verification based on simulated and measured data shows that these methods can significantly reduce false anomalies within the Bouguer gravity anomalies and their association with terrains,thereby highlighting the anomaly characteristics of the targets and revealing richer anomaly details.关键词
变密度广义地改/各项改正/精细化/大比例尺重力Key words
variable-density generalized terrain correction/various corrections/refinement/large-scale gravity survey分类
天文与地球科学引用本文复制引用
张焕侠,刘建利,李百顺,冯治汉,王庆国,屈挺,任乖雅..大比例尺重力精细化改正方法[J].物探与化探,2026,50(2):277-291,15.基金项目
陕西地矿集团2023年度科研专项资金项目重点项目(KY202315) （KY202315）
