Sentences with phrase «such deep earthquakes»

Such deep earthquakes usually don't cause enough shaking on the surface to be hazardous, but scientifically they are of great interest.

Not exact matches

The brief magnetic pulses observed prior to some moderate - sized earthquakes might be triggered by chemical bonds breaking in rocks under stress (such as those deep beneath the San Andreas fault, shown).

Because such shifts in olivine change the structure of earth's subducted lithosphere, the new phase transition mechanism could help explain the origins of some deep earthquakes.

More broadly, the Pisagua event has seismologists rethinking some basic ideas about the risk of earthquakes in similar geological settings elsewhere — places with deep - diving crustal plates, such as Japan and Indonesia.

Because we can not sample the deep Earth, we must deduce its composition either by looking at the clues hidden in igneous and metamorphic rocks, or by examining proxies for composition and structure such as the three - dimensional variation of the velocity of seismic waves produced by earthquakes and sampled by networks of seismometers on the surface.

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