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Journal of Geodesy

, Volume 81, Issue 11, pp 703–712 | Cite as

Correcting superconducting gravity time-series using rainfall modelling at the Vienna and Membach stations and application to Earth tide analysis

  • Bruno MeurersEmail author
  • Michel Van Camp
  • Toon Petermans
Original Article

Abstract

We demonstrate the possibility to improve the signal-to-noise ratio of superconducting gravity time-series by correcting for local hydrological effects. Short-term atmospheric events associated with heavy rain induce step-like gravity signals that deteriorate the frequency spectrum estimates. Based on 4D modeling constrained by high temporal resolution rain gauge data, rainfall admittances for the Vienna and Membach superconducting gravity stations are calculated. This allows routine correction for Newtonian rain water effects, which reduces the standard deviation of residuals after tidal parameter adjustment by 10%. It also improves the correction of steps of instrumental origin when they coincide with step-like water mass signals.

Keywords

Gravity time-series Tidal analysis Rain water effect modeling Superconducting gravity 

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Copyright information

© Springer-Verlag 2007

Authors and Affiliations

  • Bruno Meurers
    • 1
    Email author
  • Michel Van Camp
    • 2
  • Toon Petermans
    • 2
  1. 1.Institute of Meteorology and GeophysicsUniversity ViennaWienAustria
  2. 2.Royal Observatory of BelgiumBruxellesBelgium

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