Device for measuring terrestrial magnetic field horizontal compo

Details Device for measuring terrestrial magnetic field horizontal compo Device for measuring terrestrial magnetic field horizontal compo

1975-04-21

1977-05-31

Corcoran, Robert J.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Frequency of cyclic current or voltage

G01R 3302

Patent

active

040272346

ABSTRACT:
A device is provided for the determination of the components of a terrestrial magnetic field as well as transitory variations therein. Two variometers including permanent magnets, mounted so that there is a constant angle between them, detect the magnetic field. A calculation system is provided for the determination of the direction and magnitude of each compensating field generated by the two variometers. Proper operation of the calculation system is assured without regard to the orientation of the device with respect to the magnetic north pole. Accordingly, the device may be used in any orientation and is thus suitable for use in such locations as the ocean floor. According to a preferred embodiment of the invention, the two variometers are mounted at right angles to each other.

REFERENCES:
patent: 2151627 (1939-03-01), Vacquier
Bobrov, N., Quartz-H-Magnetometer, Geomagnetic & Aeronomy, vol. 9, No. 6 (1969) pp. 922-924.
Burtsev, Y. Method of Recording Field Variations, Geomagnetic & Aeronomy, vol. 10, No. 3 (1969), pp. 443-444.
Bobrov, V., Quartz Magnetic Variometer, Geomagnetism & Aeronomy, vol. 10, No. 3 (1969) pp. 445-446.

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