地球构造和地震波都是地学研究的重要内容。加强这方面的研究,不仅能深化对它们的认识,更有利于对各类灾害的预测预防工作的开展,争取防灾减灾取得最佳的效果。一、地球的内部构造我们赖以生存的地球,是近似实心的椭圆球体,半径约6371千米,由外向里可分为地壳、地幔、地核三个圈层。 Earth structure and seismic waves are important contents of geosciences research. Strengthening research in this area can not only deepen their understanding of these issues, but also help promote the prevention and control of various types of disasters and achieve the best results in disaster prevention and mitigation. First, the Earth’s internal structure The Earth we live on is an approximately solid elliptical sphere with a radius of 6371 km. It can be divided into three layers of the crust, the mantle and the earth core.