Earth science

Earth science

Any of several geological sciences that are concerned with the earth, its origins, and all of its various structures and physical forms and phenomena.

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Earth science > Seismology

moment of earthquakes

Earth science; Seismology

A measure of earthquake size related to the leverage of the forces (couples) across the area of the fault slip. The rigidity of the rock times the area of faulting times the ...

delta function

Earth science; Seismology

A mathematical generalized function that can be regarded as the limit of any several sequences of continuous function. It also has the "sifting " property where the delta ...

capable fault

Earth science; Seismology

A fault along which it is mechanically feasible for sudden slip to occur.

earthquake swarm)

Earth science; Seismology

A series of minor earthquakes, none of which may be identified as the main shock, occurring in a limited area and time.

viseoelastic material

Earth science; Seismology

A material which can behave as an elastic solid on a short-time scale and as a viscous fluid on a long-time scale.

coefficient of friction

Earth science; Seismology

A property of rocks that describes the amount of stress that can be accumulated before two bodies of rock will slide past each other. It is related to the roughness or ...