論文

査読有り
1997年

A one-year systematic study of electrodes for long period measurements of the electric field in geophysical environments

JOURNAL OF GEOMAGNETISM AND GEOELECTRICITY
  • FE Perrier
  • G Petiau
  • G Clerc
  • Bogorodsky, V
  • E Erkul
  • L Jouniaux
  • D Lesmes
  • J Macnae
  • JM Meunier
  • D Morgan
  • D Nascimento
  • G Oettinger
  • G Schwarz
  • H Toh
  • MJ Valiant
  • K Vozoff
  • O Yazici-Cakin
  • 全て表示

49
11-12
開始ページ
1677
終了ページ
1696
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.5636/jgg.49.1677
出版者・発行元
TERRA SCIENTIFIC PUBL CO

Various types of electrodes designed for the measurement of the electric field in the soil or in sea water at periods larger than one minute have been compared in a one-year experiment in Garchy, France. The experiment included more than fifty electrode pairs with liquid or absorbed electrolytes and Pb/PbCl2, Ag/AgCl, Cu/CuSO4 and Cd/CdCl2 metal-ion couples. The electrode parameters were systematically measured in the laboratory and the electrodes were installed in the field to constitute 50-meter long parallel dipoles separated by 2 meters. Pairs of electrodes used for sea measurements were monitored in a salted water vessel. Fourty-two potential differences were recorded with a sampling interval of 1 minute between May 1995 and April 1996. When electrodes are compared, large differences are observed in the long term stability as well as in the sensitivity to diurnal variations, rainfall and soil saturation. For measurements in soil, the installation method of the electrodes plays an important role. In salted water, the best performing electrode pair has a drift of the order of 0.1 mV per year. In soil, typical drifts for the best sensors are of the order of 0.2 mV per month in dry soil and 0.5 mV per month in soaked soil. Preferred electrode designs and installation methods, depending on the external conditions or the type of geophysical measurement, emerge from this experiment. In addition to the magneto-telluric field, potential variations which are not electrode or installation effects are observed and attributed to electrical sources in the soil.

リンク情報
DOI
https://doi.org/10.5636/jgg.49.1677
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000072832300029&DestApp=WOS_CPL
ID情報
  • DOI : 10.5636/jgg.49.1677
  • ISSN : 0022-1392
  • Web of Science ID : WOS:000072832300029

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