Process and a device for prospecting the ocean bed by measuring

Details Process and a device for prospecting the ocean bed by measuring Process and a device for prospecting the ocean bed by measuring

1975-07-24

1977-09-06

Strecker, Gerald R.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Frequency of cyclic current or voltage

G01V 308

Patent

active

040470989

ABSTRACT:
The present invention relates to a process and a device for prospecting the ocean bed by measuring electromagnetic fields.
A loop 4 emitting electromagnetic rays is towed by its electricity supply cables 3. These cables are twisted and possess a sufficient cross section to reduce their electrical resistance. The loop per se has a low reactance owing to the low frequency which is used. The pick-ups for the components of the magnetic or electric fields, which make it possible to detect the variations in resistivity of the ground, are situated with the supply generator for the loop 4 on the boat 1.
The present invention is intended for use in prospecting for mineral resources situated under water and, more generally, for all geological studies carried out on ground covered by water.

REFERENCES:
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patent: 3329929 (1967-07-01), Burnett
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patent: 3490032 (1970-01-01), Zurflueh
patent: 3514693 (1970-05-01), Cagniard
patent: 3521153 (1970-07-01), Moss
patent: 3548299 (1970-12-01), Duroux et al.
patent: 3763419 (1973-10-01), Barringer
patent: 3875497 (1975-04-01), Madsen
patent: 3936728 (1976-02-01), Ghosh et al.

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