G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
G01V3/18—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation specially adapted for well-logging
G01V3/20—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation specially adapted for well-logging operating with propagation of electric current
G01V3/22—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation specially adapted for well-logging operating with propagation of electric current using DC
Landscapes
Life Sciences & Earth Sciences
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Engineering & Computer Science
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Environmental & Geological Engineering
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Geology
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Remote Sensing
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Physics & Mathematics
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General Life Sciences & Earth Sciences
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General Physics & Mathematics
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Geophysics
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Geophysics And Detection Of Objects
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Investigating Or Analyzing Materials By The Use Of Electric Means
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Procede et agencement pour la transmission d'informations, de parametres et de donnees a un organe electro-magnetique de reception ou de commande associe a une canalisation souterraine de grande longueur.