Observing Long-period Tides in Gravity and VLBI Observations at Ny-Ålesund (Svalbard) -- A Progress Report

Details Observing Long-period Tides in Gravity and VLBI Observations at Ny-Ålesund (Svalbard) -- A Progress Report Observing Long-period Tides in Gravity and VLBI Observations at Ny-Ålesund (Svalbard) -- A Progress Report

Dec 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001evga.conf..108b&link_type=abstract

Proceedings of the 15th Workshop Meeting on European VLBI for Geodesy and Astrometry. Institut d'Estudis Espacials de Catalunya,

Astronomy and Astrophysics

Astronomy

Scientific paper

The Mf body tide is studied from gravity and space geodesy observations performed at Ny-Ålesund (Svalbard). Observations with a superconducting gravimeter are analysed and gravimetric factors for 13 tidal harmonics are determined. The observed gravimetric factor of the Mf tide deviates from theoretical values within two times the formal error. Global Very Long Baseline Interferometry data including Ny-Ålesund are analysed in two ways, with and without modelling of the Mf tide in the apriori body tide model. The Mf tide is clearly visible in the spectrum of the time series of topocentric up-component when the tide is not included in the apriori modelling of the VLBI analysis.

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