GB710286A - Apparatus for geophysical exploration - Google Patents

Apparatus for geophysical exploration

Info

Publication number
GB710286A
GB710286A GB22532/51A GB2253251A GB710286A GB 710286 A GB710286 A GB 710286A GB 22532/51 A GB22532/51 A GB 22532/51A GB 2253251 A GB2253251 A GB 2253251A GB 710286 A GB710286 A GB 710286A
Authority
GB
United Kingdom
Prior art keywords
earth
measuring
horizontal component
galvanometer
magnetometer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB22532/51A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Centre National de la Recherche Scientifique CNRS
Original Assignee
Centre National de la Recherche Scientifique CNRS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Centre National de la Recherche Scientifique CNRS filed Critical Centre National de la Recherche Scientifique CNRS
Publication of GB710286A publication Critical patent/GB710286A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • 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
    • G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
    • G01V3/082—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices operating with fields produced by spontaneous potentials, e.g. electrochemical or produced by telluric currents

Landscapes

  • Remote Sensing (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Electromagnetism (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics (AREA)
  • Geophysics And Detection Of Objects (AREA)

Abstract

710,286. Magnetic tests; geophysical surveying. CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE. Sept. 26, 1951, [Oct. 6, 1950.] No. 22532/51. Class 37. Apparatus for determining the average resistivity of the subsoil at various depths comprises a galvanometer connected to electrodes buried in the ground for measuring the horizontal component of the natural and artificial currents flowing in the earth, and a magnetometer for measuring the horizontal component of the magnetic field at the earth's surface produced by the normal earth's field combined with that produced by the earth currents, and analysing the variations in the measurements into their respective Fourier Series. It is stated that the relative magnitudes of any particular frequency will indicate the average resistivity at a depth defined by that frequency. The galvanometer and magnetometer readings may be simultaneously recorded by moving mirror suspensions, on a common photographic strip moving at the rate of a few centimeters per minute.
GB22532/51A 1950-10-06 1951-09-26 Apparatus for geophysical exploration Expired GB710286A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR710286X 1950-10-06

Publications (1)

Publication Number Publication Date
GB710286A true GB710286A (en) 1954-06-09

Family

ID=9071043

Family Applications (1)

Application Number Title Priority Date Filing Date
GB22532/51A Expired GB710286A (en) 1950-10-06 1951-09-26 Apparatus for geophysical exploration

Country Status (1)

Country Link
GB (1) GB710286A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108693412A (en) * 2017-04-06 2018-10-23 上海市地震预测分析中心 Earthquake Observation of The Geoelectric Field device and observation procedure

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108693412A (en) * 2017-04-06 2018-10-23 上海市地震预测分析中心 Earthquake Observation of The Geoelectric Field device and observation procedure
CN108693412B (en) * 2017-04-06 2024-05-03 上海市地震预测分析中心 Earthquake ground electric field observation device and observation method

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