Home Science Dictionaries thesauruses pictures and press releases geometric factor

geometric factor

A Dictionary of Earth Sciences
© A Dictionary of Earth Sciences 1999, originally published by Oxford University Press 1999.

geometric factor (Kg) A numerical multiplier defined by the geometrical spacings between electrodes, which is used in conjunction with the voltage-to-current (R) ratio measured in electrical resistivity surveys to give an apparent resistivity (ρa) such that ρa = Kg × R. The generalized formula for calculating Kg for a four-electrode configuration is: Kg = 2π(1/C1P1 − 1/C1P2 − 1/C2P1 + 1/C2P2)−1 where C1 and C2, and P1 and P2 are the current and potential electrode positions respectively. The geometric factor for the three main electrode configurations are: dipole—dipole, Kg = πn(n + 1)(n + 2)p; Schlumberger, Kg = (πp2/q)(1 − q2/4p2); Wenner, Kg = 2πp, where p and q are defined for each case.

Cite this article
Pick a style below, and copy the text for your bibliography.

  • MLA
  • Chicago
  • APA

"geometric factor." A Dictionary of Earth Sciences. . Encyclopedia.com. 21 Jan. 2019 <https://www.encyclopedia.com>.

"geometric factor." A Dictionary of Earth Sciences. . Encyclopedia.com. (January 21, 2019). https://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/geometric-factor

"geometric factor." A Dictionary of Earth Sciences. . Retrieved January 21, 2019 from Encyclopedia.com: https://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/geometric-factor

Learn more about citation styles

Citation styles

Encyclopedia.com gives you the ability to cite reference entries and articles according to common styles from the Modern Language Association (MLA), The Chicago Manual of Style, and the American Psychological Association (APA).

Within the “Cite this article” tool, pick a style to see how all available information looks when formatted according to that style. Then, copy and paste the text into your bibliography or works cited list.

Because each style has its own formatting nuances that evolve over time and not all information is available for every reference entry or article, Encyclopedia.com cannot guarantee each citation it generates. Therefore, it’s best to use Encyclopedia.com citations as a starting point before checking the style against your school or publication’s requirements and the most-recent information available at these sites:

Modern Language Association

http://www.mla.org/style

The Chicago Manual of Style

http://www.chicagomanualofstyle.org/tools_citationguide.html

American Psychological Association

http://apastyle.apa.org/

Notes:
  • Most online reference entries and articles do not have page numbers. Therefore, that information is unavailable for most Encyclopedia.com content. However, the date of retrieval is often important. Refer to each style’s convention regarding the best way to format page numbers and retrieval dates.
  • In addition to the MLA, Chicago, and APA styles, your school, university, publication, or institution may have its own requirements for citations. Therefore, be sure to refer to those guidelines when editing your bibliography or works cited list.