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First results of the GyroDIF at Livingston Island Geomagnetic Observatory, Antarctica |
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Marsal, S. (1), Torta, J.M. (1), Curto, J.J. (1), Segarra, A. (1), Ibañez, M. (1) |
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(1) Observatori de l'Ebre (OE), Univ. Ramon Llull - CSIC, 43520 Roquetes (Spain) |
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The GyroDIF is an automatic DIflux developed by the Royal Meteorological Institute which is based on a fibre optic gyroscope to refer the Declination measurements to the True North. Once the infrastructure in the Livingston Island geomagnetic observatory (LIV) is ready to accommodate it, the 2017-2018 Antarctic summer survey has been dedicated to deploying and testing the instrument. We compare the baselines of the magnetic field components obtained with the GyroDIF with those arising from a manual DIflux theodolite. The magnetic Inclination baseline and derived elements (H and Z) compare really well with manual determinations; however, Declination baselines (and its derived magnetic East component) from both instruments are more divergent from each other due to the low resolution of the gyroscope measurements. Even if the amount of data available is still scarce, we discuss the limitations of the instrument and point some possible solutions for baseline adoption. |
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Instrumentation |
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oral |
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