地震波速度结构层析成像和地震各向异性分析，是推测现今地幔流动的主要观测依据。
The current inference of mantle flow is largely based on seismic tomography and anisotropic analysis.
岩石孔隙结构是控制砂岩和碳酸盐岩的地震波速度和渗透率的重要参数之一。
Rock pore structure is one of the important parameters in controlling both seismic wave velocity and permeability in sandstones and carbonate rocks.
内核的半球结构曾经被很好的记录下来：其东半球物质均匀且地震波速很快，西半球地震波速度较慢且不均匀2-4。
A hemispherical structure of the inner core is well-documented: an isotropic eastern hemisphere with fast seismic velocities contrasts with a slower, anisotropic western hemisphere2–4.
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