文件名称：Geomagnetic Observations and Models
文件大小：17.37MB
文件格式：PDF
更新时间：2021-05-22 06:59:55
magnetic Models
The magnetic field is one of the oldest observable Earth properties. The first measured geomagnetic field component, declination, was linked to the use of compasses,having their origin in the human curiosity of the north-pointing characteristics of loadstone. Starting with the 16th century measuring the Earth’s magnetic field components (firstly only declination, thereafter also inclination and finally the full field vector) has become more systematic and kept improving over time.