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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

fault slip rate

Earth science; Seismology

The rate of slip on a fault averaged over a time period involving several large earthquakes.

acceleration

Earth science; Seismology

The rate of change of velocity of a reference point. Commonly expressed as a fraction or percentage of the acceleration due to gravity (g) where g = 980 cm/s2.

stick slip

Earth science; Seismology

The rapid displacement that occurs between two sides of a fault when the shear stress on the fault exceeds the frictional stress. Stick-slip displacement on a fault radiates ...

interplate coupling

Earth science; Seismology

The qualitative ability of a subduction thrust fault to lock and accumulate stress. Strong interplate coupling implies that the fault is locked and capable of accumulating ...

liquefaction

Earth science; Seismology

The process in which a granular solid (soil) takes on the characteristics of a liquid as a result of an increase in pore pressure and a reduction in stress. In other words, solid ...

isoseismal line

Earth science; Seismology

A line connecting points on the Earth's surface at which earthquake intensity is the same. It is usually a closed curve around the epicentre.

regression analysis

Earth science; Seismology

A statistical technique applied to data to determine, for predictive purposes, the degree of correlation of a dependent variable with one or more independent variables. (See ...