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Title
Determination of Love and Shida numbers from VLBI / Hana Špičáková
AuthorŠpičáková, Hana
CensorSchuh, Harald ; Böhm, Johannes ; Mendes Cerveira, Paulo Jorge
Published2008
Description72 Bl. : 1 CD-ROM ; Ill., graph. Darst.
Institutional NoteWien, Techn. Univ., Mag.-Arb., 2008
LanguageEnglish
Document typeMaster Thesis
Keywords (DE)Gezeiten der festen Erde / Love Zahlen / Shida Zahlen / Free Core Nutation / Weltraumtechniken / VLBI
Keywords (EN)solid Earth tides / Love numbers / Shida numbers / Free Core Nutation / space techniques / VLBI
URNurn:nbn:at:at-ubtuw:1-26194 Persistent Identifier (URN)
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Determination of Love and Shida numbers from VLBI [1.3 mb]
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Abstract (German)

Modern space geodetic techniques, such as VLBI (Very Long Baseline Interferometry), allow the validation of theoretically estimated global Love and Shida parameters from direct measurements. The modelling of tidal displacement of the Earth's surface as it is recommended in the IERS Conventions 2003 is implemented in the VLBI analysis software package OCCAM, which is used at the Institute of Geodesy and Geophysics, TU Vienna. In this thesis, a thorough description of the components of the tidal displacement is provided.

Main goal of this master thesis is to determine Love and Shida numbers of second degree from observations from CONT05, a 15 days continuous VLBI campaign in September 2005. Before applying the procedure for the determination of the Love numbers to real data, it was validated in a Matlab based program with simulated observations. When Earth rotation is considered, the Love numbers in the diurnal band become frequency dependent with a resonance around the frequency of Free Core Nutation.

In this thesis, the Love number h2, the Shida number l2 and Love numbers for six diurnal tidal waves are estimated.

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