Effect of the Long-Wavelength Topographical Correction on the Low-Degree Earth's Gravity Field

Robert Tenzer, P. Novák

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review


In the context of the regional gravity field modelling, the smoothing effect of the topographical correction on the high-frequency part of the gravity signal is well documented. In this study, the effect of the long-wavelength topographic correction on the low-degree Earth's gravity potential and attraction is investigated. For this purpose, the Earth's gravity field and the topography-corrected gravity field are compared for various spectral resolutions. The topography-corrected gravity field is obtained from the low-degree Earth's gravity field after subtracting the long-wavelength gravitational field generated by the topography. The Earth's gravity field is computed from a global geopotential model (GGM). The gravitational field generated by the topography is modelled from a global elevation model (GEM), adopting the constant topographical mass-density distribution.
Original languageEnglish
Title of host publicationGravity, Geoid and Earth Observation - IAG Commission 2
Subtitle of host publicationGravity Field
Number of pages6
Publication statusPublished - 1 Dec 2010
Externally publishedYes
EventIAG International Symposium on "Gravity, Geoid and Earth Observation 2008" - Chania, Crete, Germany
Duration: 23 Jun 200827 Jun 2008


ConferenceIAG International Symposium on "Gravity, Geoid and Earth Observation 2008"
CityChania, Crete


  • Gravity field
  • Topographical correction

ASJC Scopus subject areas

  • Computers in Earth Sciences
  • Geophysics

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