Original scientific paper

https://doi.org/10.17559/TV-20140417135956

Geomagnetic survey on Sinjsko polje repeat station and data reduction using the onsite dIdD variometer

Danijel Šugar orcid.org/0000-0002-7796-9915 ; Faculty of Geodesy, University of Zagreb, Kačićeva 26, HR-10 000 Zagreb, Croatia
András Csontos ; Faculty of Geodesy, University of Zagreb, Kačićeva 26, HR-10 000 Zagreb, Croatia
Mario Brkić ; Geological and Geophysical Institute of Hungary, Tihany Geophysical Observatory, Kossuth L. u., H-8237 Tihany, Hungary

Abstract

Within the Croatian-Hungarian project for the first time in the Republic of Croatia the repeat stations survey was carried out using an onsite dIdD (delta Declination / delta Inclination) variometer. Since the geomagnetic field vector observations are obtained in the instrument’s reference frame, the calibration parameters have to be determined enabling the transformation to the geographic coordinate system XYZ. Three and a half days long occupation of the Sinjsko polje (SINP) repeat station revealed the temporal variability of the geomagnetic field gradients. Although observations were affected by extra magnetic field contributions, the determination of the quiet-time level geomagnetic field differences between the SINP repeat station and THY (Tihany) reference observatory enabled a more reliable data reduction. The comparison of results of different data reduction methods pointed out the improvement of the geomagnetic survey with the onsite variometer.

Keywords

calibration parameters; data reduction; dIdD; geomagnetic survey; onsite variometer; repeat station

Hrčak ID:

139744

URI

https://hrcak.srce.hr/139744

Publication date:

15.6.2015.

Article data in other languages: croatian

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