@article{fdi:010023106,
  title = {{T}he location of infinite electrodes in pole-pole electrical surveys : consequences for 2{D} imaging},
  author = {{R}obain, {H}enri and {A}lbouy, {Y}ves and {D}abas, {M}. and {D}escloitres, {M}arc and {C}amerlynck, {C}. and {M}echler, {P}. and {T}abbagh, {A}.},
  editor = {},
  language = {{ENG}},
  abstract = {{I}n 2{D}-multielectrode electrical survey using the pole-pole array, the distance to "infinite electrodes" is actually finite. {A}s a matter of fact, the available cable length generally impose a poor approximation of theoretical location of these electrodes at infinity. {T}his study shows that in most of the cases, the resulting apparent resistivity pseudosection is strongly distorted. {N}umerical simulation validated by field test also shows that a particular finite array provides results that are as close as possible to the one of the ideal pole-pole array. {T}his is achieved when two conditions that are weaker than an infinite location are fulfilled : (i) the "infinite electrodes" are placed symmetrically on both sides of the in-line electrodes with a spread angle of 30° and (ii) the length of "infinite lines" is at least 20 times the greatest distance between in-line electrodes. {T}he electrical 2{D} image obtained with this enhanced array is the least distorded one with respect to the pole-pole image. {A}pparent resistivities are generally underestimated, but this deviation is almost homogeneous. {T}hough the shift cannot be determined a priori, the interpretation of such an image with direct or inverse software designed for pole-pole data provides an accurate interpretation of the ground geometry. ({R}{\'e}sum{\'e} d'auteur)},
  keywords = {{GEOPHYSIQUE} ; {PROSPECTION} {ELECTRIQUE} ; {RESISTIVITE} ; {APPAREIL} {DE} {MESURE} ; {SIMULATION} ; {LOGICIEL} {D}'{APPLICATION} ; {MODELISATION} ; {MODELE} {MATHEMATIQUE} ; {METHODE} {D}'{ANALYSE}},
  booktitle = {},
  journal = {{J}ournal of {A}pplied {G}eophysics},
  volume = {41},
  numero = {},
  pages = {313--333},
  ISSN = {0926-9851},
  year = {1999},
  DOI = {10.1016/{S}0926-9851(99)00010-5},
  URL = {https://www.documentation.ird.fr/hor/fdi:010023106},
}