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Grace Signal Filtering as a Means of Determining Equivalent Water Thickness in Poland

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  • Biryło Monika

    (University of Warmia and Mazury, Department of Astronomy and Geodynamics Heweliusza St. 10/2, 10-724 Olsztyn, Poland)

  • Nastula Jolanta

    (Social Academy of Science Sienkiewicza St. 9, 90-113 Łódź, Poland)

Abstract

In the paper an Equivalent Water Thickness (EWT) determination as a way of observing gravity variations is described. Since raw data acquired directly from Gravity Recovery and Climate Experiment - GRACE satellites is unsuitable for analysis due to stripes occurrence, a filtering algorithm must be used. In this paper, authors are testing two isotropic (Gauss, CNES/GRGS) filters and two anisotropic filters (Wiener- -Kolomogorov, ANS). Correlation, amplitude ratio, and modification were determined as well as maps were generated.

Suggested Citation

  • Biryło Monika & Nastula Jolanta, 2012. "Grace Signal Filtering as a Means of Determining Equivalent Water Thickness in Poland," Papers on Global Change IGBP, Sciendo, vol. 19(1), pages 33-42, January.
    • Handle: RePEc:vrs:paoglc:v:19:y:2012:i:1:p:33-42:n:2
    DOI: 10.2478/v10190-012-0002-9
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