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A New Argentinean Gravimetric Geoid Model: GEOIDEAR

  • Conference paper
International Symposium on Earth and Environmental Sciences for Future Generations

Part of the book series: International Association of Geodesy Symposia ((IAG SYMPOSIA,volume 147))

Abstract

A new Argentinean gravimetric geoid model named GEOIDEAR was developed using the remove-compute-restore technique and incorporating the GOCO05S satellite-only global geopotential model (GGM) together with 560,656 land and marine gravity measurements. Terrain corrections were calculated for all gravity observations using a combination of the SRTM_v4.1 and SRTM30_Plus_v10 digital elevation models. For the regions that lacked of gravity observations, the DTU13 gravity model was utilised. The residual gravity anomalies were gridded using the tensioned spline algorithm. The resultant gravity anomaly grid was applied in the Stokes’ integral using the spherical multi-band FFT approach and the deterministic kernel modification proposed by Wong and Gore. The accuracy of GEOIDEAR was assessed by comparing it with GPS-levelling derived geoid undulations at 1904 locations and the EGM2008 GGM. Results show that the new Argentinean geoid model has an accuracy of less than 10 cm.

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Acknowledgements

We would like to thank Prof. C.C. Tscherning (R.I.P. 1942–2014) for providing the GRAVSOFT software and for all his help and support. We are also very grateful to the many individuals and organisations that supplied data for this study, and to the IGN’s Geodesy Division staff for their support and assistance over the past year. Finally, we would like to acknowledge three anonymous reviewers for their assertive and helpful comments and suggestions.

This research was partially funded by the Department of Foreign Affairs and Trade (DFAT) and RMIT, University Australia.

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Authors and Affiliations

  1. The SPACE Research Centre, Royal Melbourne Institute of Technology (RMIT) University, Melbourne, VIC, Australia

    D. A. Piñón, K. Zhang & S. Wu

  2. Instituto Geográfico Nacional, Buenos Aires, Argentina

    D. A. Piñón & S. R. Cimbaro

Authors
  1. D. A. Piñón
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  2. K. Zhang
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  3. S. Wu
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  4. S. R. Cimbaro
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Corresponding author

Correspondence to D. A. Piñón .

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Editors and Affiliations

  1. Geophysical Institute and Department of Geosciences, University of Alaska Fairbanks, 903 Koyukuk Dr., Fairbanks, Alaska, 99775, USA

    Jeffrey T. Freymueller (Series Editor) (Series Editor)

  2. Deutsches Geodätisches Forschungsinstitut, Technische Universität München, Arcisstr. 21, DE-80333, Munich, Germany

    Laura Sánchez (Assistant Editor) (Assistant Editor)

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Piñón, D.A., Zhang, K., Wu, S., Cimbaro, S.R. (2017). A New Argentinean Gravimetric Geoid Model: GEOIDEAR. In: Freymueller, J.T., Sánchez, L. (eds) International Symposium on Earth and Environmental Sciences for Future Generations. International Association of Geodesy Symposia, vol 147. Springer, Cham. https://doi.org/10.1007/1345_2017_267

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