Skip to Main content Skip to Navigation
Journal articles

Retrieving electric resistivity data from self-potential measurements by cross-correlation

Abstract : We show that the two-point cross-correlation of self-potential field recordings is equal to the electric resistivity between the two points. This holds under the condition that spatially and temporally uncorrelated noise sources exist throughout the volume. These sources should have a known amplitude spectrum and their correlated strengths should be proportional to the dissipative medium property function. Natural fluctuations, such as thermal noise, may occur that satisfy the necessary conditions. When these fluctuations are random deviations from a state of thermal equilibrium, the fluctuation-dissipation theorem can be used to describe these sources. Other types of sources may exist, such as the ones creating the self-potential field through coupling with fluctuations in pressure, temperature and chemical potential gradients.
Complete list of metadata

https://hal-insu.archives-ouvertes.fr/insu-00549001
Contributor : Pascale Talour <>
Submitted on : Thursday, March 11, 2021 - 8:31:00 AM
Last modification on : Tuesday, July 27, 2021 - 9:36:02 AM
Long-term archiving on: : Saturday, June 12, 2021 - 6:09:15 PM

File

2009GL042247.pdf
Publisher files allowed on an open archive

Identifiers

Collections

Citation

Evert Slob, Roel Snieder, André Revil. Retrieving electric resistivity data from self-potential measurements by cross-correlation. Geophysical Research Letters, American Geophysical Union, 2010, 37, pp.04308. ⟨10.1029/2009GL042247⟩. ⟨insu-00549001⟩

Share

Metrics

Record views

239

Files downloads

60