A detailed analysis of tropospheric effects on geodetic observations at TMGO

Improvements in geodetic tools are making previously subtle effects significant. Two examples affecting GPS observations are atmospheric loading of the Earth's crust and the tropospheric delays, specifically the wet component. Each measurement, tropospheric delays and site coordinates, requires...

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Bibliographic Details
Published in:Physics and chemistry of the earth 1998, Vol.23 (1), p.103-106
Main Authors: Schenewerk, M., vanDam, T.M., Sasagawa, G., Philipsen, S., Larson, K.
Format: Article
Language:English
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Summary:Improvements in geodetic tools are making previously subtle effects significant. Two examples affecting GPS observations are atmospheric loading of the Earth's crust and the tropospheric delays, specifically the wet component. Each measurement, tropospheric delays and site coordinates, requires unambiguous determination of the other to achieve the highest accuracy. Table Mountain Geophysical Observatory (TMGO) is a unique site where a long history of observations from two complementary techniques, GPS and superconducting gravimetry, have been accrued. In particular, the superconducting gravity measurements provide a unique baseline for evaluating GPS vertical estimates over a variety of time frames. Positional estimates for TMGO using these techniques will be compared. Tropospheric effects will be identified and discussed. The ability for GPS to make subdaily, daily, and long term vertical estimates will be evaluated.
ISSN:0079-1946
1879-3568
DOI:10.1016/S0079-1946(97)00250-4