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Volume 6, issue 2
Geosci. Instrum. Method. Data Syst., 6, 487–493, 2017
https://doi.org/10.5194/gi-6-487-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

Special issue: The Earth’s magnetic field: measurements, data, and applications...

Geosci. Instrum. Method. Data Syst., 6, 487–493, 2017
https://doi.org/10.5194/gi-6-487-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research article 09 Nov 2017

Research article | 09 Nov 2017

Merging fluxgate and induction coil data to produce low-noise geomagnetic observatory data meeting the INTERMAGNET definitive 1 s data standard

Heinz-Peter Brunke et al.

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Cited articles

Brunke, H.-P., Korte, M., and Widmer-Schidrig, R.: IndCoilsFGE – A software package for merging Fluxgate and Induction Coil data V.1.0, GFZ Data Services, https://doi.org/10.5880/GFZ.2.3.2017.002, 2017.
Korepanov, V. and Rasson, J.: New INTERMAGNET fluxgate magnetometer, publications of the institute of geophysics, Pol. Acad. 75 Sc., 398–406, 2007.
Pedersen, L. W. and Merenyi, L.: The FGE Magnetometer and the INTERMAGNET 1 Second Standard, J. Ind. Geophys. Union, 30–36, 2016.
Ritter, O. and Pulz, E.: Entwicklung einer Kalibriereinrichtung für Induktionsspulenmagnetometer, Scientific Technical Report 01/10 des GeoForschungsZentrum Potsdam, https://doi.org/10.2312/GFZ.b103-0100, 2001.
Schmucker, U. and Weidelt, P.: Electromagnetic Induction in the Earth, Lectures Notes Aarhus, https://doi.org/10.1038/ncomms12883, 1975.
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Short summary
In magnetic observatory data, according to the INTERMAGNET definitive 1 s data standard, the fluxgate magnetometer self noise usually covers the natural signal for frequencies higher than about 30 mHz. We present a numerical method how to merge the data with induction coil data in order to drastically reduce noise and to fill the entire possible bandwidth with information on the earth magnetic field. In spectrograms we visualize interesting phenomena revealed with the method.
In magnetic observatory data, according to the INTERMAGNET definitive 1 s data standard, the...
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