• Title/Summary/Keyword: electric potential decay curve

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Pole-pole array electrical resistivity survey and an effective interpretational scheme of its data (2극법 전기비저항 탐사 자료의 효율적인 해석방법)

  • Cho Dong-Heng;Lee Chang Yourl;Jee Sang-Keun
    • 한국지구물리탐사학회:학술대회논문집
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    • 2000.09a
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    • pp.112-131
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    • 2000
  • In spite of its many strong points, pole-pole electrode configuration is not often used for ground electrical resistivity survey except for bore hole survey as normal logging and for archaeological investigation. Above all, poor spatial resolution of pole-pole survey may be responsible for this. But recent experiences so far gained by the present authers lead them to think that pole-pole survey can be at least a viable means of reconnaissance survey in near-surface conductive environment and an effective interpretational scheme may augment its resolution. As well known, a response of any other electrode configuration is a linear combination of pole-pole responses. Based on this principle of linear superposition and the principle of reciprocity, the other 'responses' can be derived with simple additions and subtractions of pole-pole responses. Though such responses are not always correct due to the adverse effects of noises, combined with the potential decay curves, they can be helpful to interprete better pole-pole survey data especially in connection of the resolution. This can be comparable to the use of the first or second derivatives of gravity and magnetic intensity surveys.

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