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地核位于地球的中心,其半径为3470公里。地核的体积约占地球的16％,但其质量却占地球总质量的32％。 据(1978)的资料;在A”模型中,地核包括下列几个部分: 带 深度(公里) 压力(兆巴) 密度(克/匣米~3) E(外核) 2898—4980 1.36—3.20 9.98—12.17 F(过渡带) 4980—5120 3.20—3.28 12.17—12.15 G(内核) 5120—6371 3.28—3.61 12.25—12.51 地震观测没有发现穿透外核的横波。据此认为外核是液态的。地球磁场的存在以及一系列其他地球物
The core is located in the center of the earth, with a radius of 3470 km. The core of the Earth accounts for about 16% of the volume, but its mass accounts for 32% of the total mass of the earth. According to (1978), in the A "model, the core consists of the following sections: Depth (km) Pressure (in megabases) Density in g / m³ E (outer) 2898-4980 1.36- 3.20 9.98-12.17 F (transition zone) 4980-5120 3.20-3.28 12.17-12.15 G (core) 5120-6371 3.28-3.61 12.25-12.51 No shear waves penetrating the outer core were observed during the seismic observation, and the outer core was considered to be liquid The existence of the earth ’s magnetic field and a series of other earth objects