Abstract
A new portable magnetometer theodolite with fluxgate sensor has been developed for measuring the components of the earth's magnetic field. With this instrument, used as a null detector, it is possible to make absolute measurements of declination (D) and inclination (I). The compensation of the main magnetic field allows direct intensity measurements (H, X, Y, Z components); in this case the calibration is made by reference to a proton magnetometer.
The observation procedure is particularly easy and quick. The accuracy is better than 5 sec of arc forD andI and better than 1 nT for direct intensity measurements.
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References
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Trigg, D. F.: 1970,A Portable D and I Magnetometer, Geomagnetic Lab. Report No. 70-3, Earth Phys. Branch, Dept. Energy, Mines and Resources, Ottawa, Canada.
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Bitterly, J., Cantin, J.M., Schlich, R. et al. Portable magnetometer theodolite with fluxgate sensor for earth's magnetic field component measurements. Geophysical Surveys 6, 233–239 (1984). https://doi.org/10.1007/BF01465538
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DOI: https://doi.org/10.1007/BF01465538