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一、前言高斯理论是近代地磁学的理论基础。人们在对地磁场进行球谱分析时,可以把地球当作园球,也可以把地球当作椭球,使用的地磁资料可以是测量资料(陆地、海洋、航空、卫星、地磁台),也可以是从地磁图上量取的磁场值,使用的地磁要素可以是北向分量x东向分量y垂直分量z,也可以是它们的各种形式的组合,球谐分析的阶数一般为6～12阶。地磁场的球谱分析已有近150年的历史,但是,国际地磁参考场的历史并不长,这主要是因为在本世纪六十年代以前,缺乏国际间的合作。国际地磁学和高空物现学协会(IAGA)
I. Introduction The Gaussian theory is the theoretical basis of modern geomagnetism. When people make spherical analysis of geomagnetic field, they can think of the earth as a park ball or as an ellipsoid. The geomagnetic data used can be measurement data (land, sea, air, satellite, geomagnetic station) Can be measured from the geomagnetic field magnetic field value, the use of geomagnetic elements can be the north component x east component y vertical component z, can also be a combination of their various forms, the order of the ball harmonic analysis is generally 6 ~ 12 orders. Geospheric ball spectroscopy has been nearly 150 years of history, but the history of the international geomagnetic reference field is not long, mainly because before the sixties of this century, the lack of international cooperation. International Association of Geology and Alaskan Discovery (IAGA)