Method and apparatus for geophysical exploration using GMR senso

Details Method and apparatus for geophysical exploration using GMR senso Method and apparatus for geophysical exploration using GMR senso

1997-09-10

2000-03-14

Snow, Walter E.

Electricity: measuring and testing

Of geophysical surface or subsurface in situ

By magnetic means

324348, G01U 300, G01U 308, G01R 3304

Patent

active

060377763

ABSTRACT:
An instrument for geophysical measurement of magnetic field strength, using a GMR sensor is provided. The instrument achieves high sensitivity across a relatively wide bandwidth in an instrument which is small and lightweight. The instrument makes it feasible to obtain data, substantially simultaneously, at a plurality of locations and/or frequencies, thus not only reducing time requirements involved in measurements but reducing or eliminating the need for correcting data for changes in earth's magnetic fields. The instrument has relatively high vector sensitivity and relatively low power consumption.

REFERENCES:
patent: 5519318 (1996-05-01), Koerner

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