"Eight months of microseismic picks out the subducted slab beneath Japan"

the subducted slab beneath Japan

The earthquake data here were recorded over a six month period (published by Hasegawa and others in 1978). The subducted slab has seismic velocities (P-waves and S-waves) that are 6% higher than the surrounding mantle, This is an example of a result from seismic tomography.

Subduction zones

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