Discussion of Current Correction Methods of the Normal Magnetic Field for Data Processing of Ground Magnetic Surveys
详细信息
- 责任者：Sun Zhongren (Shenyang Institute of Geology and Mineral Resources ; Shenyang 110034 ; China) ; Zhao Xuejuan
- 刊名：Geology and Prospecting
- 出版年：2011
- 卷期：47(4)
- 关键词：磁法勘探 ; magnetic prospecting ; 磁异常 ; magnetic anomaly
- 页码：p.679-685
- 图表：3 illus., 16 refs.
- 分类号：1600
- issnNo：ISSN0495-5331
- isbnNo：CN11-2043/P
摘要
This paper presents the calculation method for the international geomagnetic reference field (IGRF), discusses the significance of correction of the normal magnetic field to ground magnetic surveys, compares accuracies of the IGRF and geomagnetic maps, and discusses the current correction methods for geomagnetic data from ground surveys. The results indicate that the regional correction based on gridded nationwide geomagnetic data can yield much finer result compared to the traditional methods. Therefore, the authors prefer to utilize the gridded nationwide geomagnetic data to make correction for ground geomagnetic data.