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地球固体内核,一个半径为1220km(地球液体核的1/3)的铁合金球体,吸引着许多科学家在许多领域探索了至少10年。地球内核的一个显著特性是各向异性:地震波沿平行于地球旋转轴方向的传播比沿垂直于地球旋转轴方向的传播快。这种3％
The Earth’s solid core, a ferrous alloy sphere with a radius of 1220 km (1/3 of the Earth’s liquid core), has attracted many scientists to explore in many fields for at least 10 years. One of the notable features of the Earth’s core is anisotropy: the propagation of seismic waves along a direction parallel to the Earth’s axis of rotation is faster than that along a direction perpendicular to the Earth’s axis of rotation. This 3%