TERRAPUB Earth, Planets and Space

Earth Planets Space, Vol. 59 (No. 9), pp. 1007-1014, 2007

Automation of absolute measurement of the geomagnetic field

H. U. Auster1, M. Mandea2, A. Hemshorn1, E. Pulz2, and M. Korte2

1Institut für Geophysik und extraterrestrische Physik, TU Braunschweig, Mendelssohnstrasse 3, 38106 Braunschweig, Germany
2GeoForschungsZentrum Potsdam, Telegrafenberg, 14473 Potsdam, Germany

(Received December 21, 2006; Revised July 2, 2007; Accepted July 19, 2007; Online published September 28, 2007)

Abstract: In this paper a device is presented to measure the geomagnetic field vector absolutely and automatically. In contrast to the standard DI-Flux measurement procedure our automation approach is based on the rotation of a three-component fluxgate magnetometer about precisely monitored axes without using a non-magnetic theodolite. This method is particularly suitable for automation because it only requires exact knowledge of the axes orientations. Apart from this, requirements on mechanical precision are moderate. The design of the facility is presented, and mechanical, optical and magnetic limitations are discussed. First promising results of measuring the Earth's magnetic field absolutely and automatically with the new device at Niemegk observatory are discussed.
Key words: Automation of absolute measurement, geomagnetic field.

Corresponding author E-mail: uli.auster@tu-braunschweig.de

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