Definition: Self-Potential (SP)

Self-Potential (SP)

The self-potential (SP) technique is a passive electrical geophysical method based upon the measurement of spontaneous or natural electrical potential developed in the earth due to: 1) electrochemical interactions between minerals and subsurface fluids; 2) electrokinetic processes resulting from the flow of ionic fluids; or 3) thermoelectric mechanisms from temperature gradients in the subsurface.

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Also Known As

Spontaneous Potential

Related Terms

streaming potential, electrofiltration potential, thermoelectric potential, electromical potential