地磁场空间变化及相关性分析  

Space Changing and Correlation Analysis of the Geomagnetic Field

作　　者：刘晓刚[1,2,3] 吴娟 王凯[4] 孙广 Liu Xiaogang;Wu Juan;Wang Kai;Sun Guang(Xi＇an Research Institute of Surveying and Mapping, Xi＇an 710054, China;State Key Laboratory of Geo-Information Engineering, Xi＇an 710054, China;State Key Laboratory of Geodesy and Earth＇s Dynamics, Wuhan 430077, China;Unit 63918, Beijing 100028, China;Xi＇an Aerospace Remote Sensing Data Technology Co. , Ltd. Xi＇an 710100, China)

机构地区：[1]西安测绘研究所,陕西西安710054 [2]地理信息工程国家重点实验室,陕西西安710054 [3]大地测量与地球动力学国家重点实验室,湖北武汉430077 [4]63918部队,北京100028 [5]西安航天天绘数据技术有限公司,陕西西安710100

出　　处：《测绘科学与工程》2018年第1期1-7,共7页Geomatics Science and Engineering

基　　金：国家自然科学基金资助项目（41774018,41304022,41504018,41404020）;大地测量与地球动力学国家重点实验室开放基金资助项目（SKLGED2017-1-1-E）;地理信息工程国家重点实验室开放研究基金资助项目（SKLGIE2015-M-1-4）.

摘　　要：地磁场空间变化特性及其规律的分析研究，对于地磁台站数据的通化处理具有重要参考价值。本文从纬线、经线方向分别选取了CLF、WNG、FUR、NGK和BEL、GCK、HLP、HRB等4个地磁台站，计算了不同台站数据在同一时期不同方向的日变相关系数和日变差值，获得了地磁场在不同季节、不同磁情指数下的空间相关性结果。计算结果表明，地磁台站之间相关性的整体变化趋势是随着台站之间距离的增加而下降；地磁日变数据具有明显的周期性，在9点-14点会出现峰值；在春夏秋三季，地磁变化较为活跃，在冬季的变化较为平缓。Research and analysis of space changing feature and regularity of the geomagnetic field has provide important reference for the reduce processing of geomagnetic station data. Four geomagnetic stations are selected from each direction, specifically, CLF, WNG, FUR and NGK from the latitudinal direction, and BEL, GCK, HLP, and HRB from the longitudinal direction. The diurnal correlation coefficients and differences of different geomagnetic stations in the same time but different directions are calculated, and the space correlation results of geomagnetic field in different seasons and magnetic indexes are obtained. Calculation results show that the space correlation will descend with the increase of distance among geomagnetic stations generally; the diurnal data are obviously periodic and will reach the peak value between 9 and 14 o＇clock; the geomagnetic field changes actively in spring, summer, and autumn, while gently in winter.

关 键 词：地磁场 地磁台站 日变改正 磁情指数 

分 类 号：P228[天文地球—大地测量学与测量工程]