大地测量与地球动力学2018，Vol.38Issue(3)：260-262,267,4.DOI:10.14075/j.jgg.2018.03.008
大地水准面起伏对国际地磁参考场计算的间接影响
Indirect Impact of Geoid Undulation on Calculation of International Geomagnetic Reference Field
摘要
Abstract
When calculating the main field using the international geomagnetic reference field(IGRF) model,the height above the mean sea level,instead of the geodetic height,is utilized and the corresponding indirect impact of the geoid undulation is often ignored.Through global practical computation,the results show that neglecting the geoid undulation will introduce the errors of —2.37～1.59 nT,—0.51～0.33 nT,—1.95～2.09 nT,—2.37～1.59 nT,and —2.39～1.82 nT for the north,east,vertical and horizontal components and total intensity of the main field on the Earth's surface,respectively.关键词
国际地磁参考场/主磁场/地磁要素/正高与大地高/大地水准面起伏Key words
international geomagnetic reference field/main field/geomagnetic elements/orthometric height and geodetic height/geoid undulation分类
天文与地球科学引用本文复制引用
胡正旺,杜劲松,陈超..大地水准面起伏对国际地磁参考场计算的间接影响[J].大地测量与地球动力学,2018,38(3):260-262,267,4.基金项目
国家自然科学基金(41604060) （41604060）
湖北省自然科学基金(2015CFB361) （2015CFB361）
中央高校基本科研业务费专项(CUG170618).National Natural Science Foundation of China,No.41604060 （CUG170618）
Natural Science Foundation of Hubei Province,No.2015CFB361 （）
Fundamental Research Funds for the Central Universities,No.CUG170618. （）
