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  Absolute vector-scalar Overhauser Magnetometers for ground Geophysics and secular Trend Research

Denisov, A., Sapunov, V., Sergeev, A., Soloviev, A., Belyakov, D., Borodin, P., Muravyеv, L., Narkhov, E., Khomutov, S., Martyshko, P. (2023): Absolute vector-scalar Overhauser Magnetometers for ground Geophysics and secular Trend Research, XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) (Berlin 2023).
https://doi.org/10.57757/IUGG23-3480

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Item Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5019446 Version Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5019446_2
Genre: Conference Paper

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 Creators:
Denisov, Alexey1, Author
Sapunov, Vladimir1, Author
Sergeev, Andrew1, Author
Soloviev, Anatoly1, Author
Belyakov, Denis1, Author
Borodin, Pavel1, Author
Muravyеv, Lev1, Author
Narkhov, Evgeny1, Author
Khomutov, Sergey1, Author
Martyshko, Petr1, Author
Affiliations:
1IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations, ou_5011304              

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 Abstract: Scalar proton Overhauser magnetometers are widely used in ground magnetic exploration, magnetic observatories, repeat station survey and on space satellites. The main property of these magnetometers is the high metrological accuracy, long-term and temperature stability of measurements, which is based on world spectroscopic constants.Currently, the use of vector-scalar Overhauser magnetometers measuring both the total field intensity and components is promising, which is demonstrated using the magnetometers dIdD (GEM Systems, Canada) and POS-3 and POS-4 (QMLab, Russia).The POS-3 magnetometer measures the absolute total field F and vertical component Z. Ten years of operating experience of this magnetometer has shown long-term stability of 0.1 nT/year and up to 1 nT of absolute accuracy in the range of -30...+60 ºC. The method of horizontal rotation and a simple mathematical formula allow us to determine the correction of the misalignment of the magnetic and gravitational vertical. Monthly and yearly calibrations confirmed the stability of the magnetic system based on a Garrett solenoid with a precision titanium frame. A preliminary calibration was carried out on the state standard of the The D.I. Mendeleev All-Russian Institute for Metrology. The successful experience of application at repeat station net of the Urals is presented.The possibility of using such magnetometers for ground-based geophysical surveys and at the magnetic observatories is being considered.

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Language(s): eng - English
 Dates: 2023
 Publication Status: Finally published
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 Rev. Type: -
 Identifiers: DOI: 10.57757/IUGG23-3480
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Title: XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)
Place of Event: Berlin
Start-/End Date: 2023-07-11 - 2023-07-20

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Title: XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)
Source Genre: Proceedings
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Publ. Info: Potsdam : GFZ German Research Centre for Geosciences
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