The existing of earthquake swarm, S wave shadow in some seismic stations and gradually uplifting of surface suggest a magma system beneath these volcanoes.

火山区存在的震群活动、部分台站观测到的S波阴影区以及地表的缓慢抬升等，指示火山区存在一个岩浆系统。

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The shear (s) -wave velocity of near-surface materials and its effect on seismic-wave propagation are of fundamental interest in many engineering, environmental, and groundwater studies.

横波速度由于更能直接反映岩石的物理性质，从而在许多工程、环境和地下水勘查中有重要作用。

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As the S-wave transmission from the impact of fluid properties, compared to the longitudinal wave the near-surface of S-wave can reach under the water table.

横波传播不受孔隙流体性质的影响，与纵波相比，横波的近地表层可以达到潜水面以下。

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There's barely time to understand what's happening before a flash of silver whale's skin breaks the surface, dips beneath a wave and plunges down to the dark fathoms of the North Atlantic.

BBC: An Icelandic journey to the centre of the earth