GB763184A - Apparatus for inductive prospecting - Google Patents
Apparatus for inductive prospectingInfo
- Publication number
- GB763184A GB763184A GB23909/54A GB2390954A GB763184A GB 763184 A GB763184 A GB 763184A GB 23909/54 A GB23909/54 A GB 23909/54A GB 2390954 A GB2390954 A GB 2390954A GB 763184 A GB763184 A GB 763184A
- Authority
- GB
- United Kingdom
- Prior art keywords
- trailed
- aug
- aircraft
- voltage
- phase
- 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
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
- G01V3/15—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation specially adapted for use during transport, e.g. by a person, vehicle or boat
- G01V3/165—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation specially adapted for use during transport, e.g. by a person, vehicle or boat operating with magnetic or electric fields produced or modified by the object or by the detecting device
Abstract
763,184. Geophysical exploration. CANADIAN AIRBORNE GEOPHYSICS, Ltd. Aug. 17, 1954 [Aug. 31, 1953], No. 23909/54. Class 37. In inductive geophysical exploration wherein a transmitting coil energized with low frequency A.C. is trailed by a moving vehicle, and the phase of the signal picked up by a receiving coil is noted to determine the type of local earth strata, the effect of eddy currents produced in the locally associated metal bodies of the vehicles is compensated by one or more auxiliary coils fed with a current which is 90 degrees out-of-phase with that in the main transmitting coil, or by auxiliary metal sheets producing compensating eddy currents. For use with aircraft, the receiving coil is trailed as near to the earth's surface as practical, the tow-line containing the connecting wires, or consisting of a single, thin, steel wire, and the pick-up voltage being transmitted by radio to the aircraft as L.F. modulation of an R.F. voltage. Specification 763,185 is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI763184X | 1953-08-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB763184A true GB763184A (en) | 1956-12-12 |
Family
ID=8556263
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB23909/54A Expired GB763184A (en) | 1953-08-31 | 1954-08-17 | Apparatus for inductive prospecting |
Country Status (2)
| Country | Link |
|---|---|
| GB (1) | GB763184A (en) |
| MY (1) | MY5700023A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2173903A (en) * | 1985-04-18 | 1986-10-22 | Shell Int Research | A method and system for primary field compensation in a towed receiver for airborne electromagnetic survey systems |
-
1954
- 1954-08-17 GB GB23909/54A patent/GB763184A/en not_active Expired
-
1957
- 1957-12-31 MY MY195723A patent/MY5700023A/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2173903A (en) * | 1985-04-18 | 1986-10-22 | Shell Int Research | A method and system for primary field compensation in a towed receiver for airborne electromagnetic survey systems |
Also Published As
| Publication number | Publication date |
|---|---|
| MY5700023A (en) | 1957-12-31 |
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