地震学和地磁学都是观测的科学。在近代历史上，地震学和地磁学的每一项重要的发现，每一步重大的进展，无一不是与缜密的观测和深入的研究直接或间接联系的——从１９０６年地核的确认到１９３６年地球内核的发现，一直到最近（１９９６年）宋晓东和Ｒｉｃｈａｒｄｓ发现地球 Seismology and geomagnetic science are all observational sciences. In modern history, every major discovery in seismology and geomagnetism, and every major step forward, is directly or indirectly linked with careful observation and in-depth research - from the confirmation of the 1906 Earth Core The discovery of the Earth's core in 1936, until recently (1996) by Song Xiaodong and Richards found that Earth