Question

How sesimography is helpful to us

Answer 1

Explanation:

Seismographs sometimes detect small and long-continuing oscillations of the ground, called microseisms, that do not originate as earthquakes. ... The depths of underground layers, their angle of inclination, and the speed of seismic waves in each layer can be also determined by using seismographs.

Answer 2

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Explanation:

Seismographs sometimes detect small and long-continuing oscillations of the ground, called microseisms, that do not originate as earthquakes. The depths of underground layers, their angle of inclination, and the speed of seismic waves in each layer can be also determined by using seismographs.

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