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Detailed Reference Information |
Soudarin, L., Crétaux, J. and Cazenave, A. (1999). Vertical crustal motions from the DORIS Space-Geodesy System. Geophysical Research Letters 26: doi: 10.1029/1999GL900215. issn: 0094-8276. |
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Five years (1993--1997) of DORIS data on the SPOT and Topex-Poseidon satellites have been analyzed to estimate vertical motions at 33 sites of the permanent DORIS network. Rates have been determined assuming constant velocity over the 5-year time span. Except for a few stations, vertical rates are lower than 5 mm/yr. Comparison with solutions provided by GPS, SLR or VLBI at colocated sites shows good agreement for most stations. Some space-geodesy vertical rates however disagree significantly. This may result from interannual to decadal fluctuations affecting the vertical motions, giving rise to different apparent linear trends if estimated over different time spans. Except for six high-latitude stations, post-glacial rebound produces negligible signal and cannot explain the observed motions. Other local or regional phenomena from geophysical or anthropogenic origin may be responsible for the estimated vertical motions. ¿ 1999 American Geophysical Union |
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Abstract |
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Keywords
Geodesy and Gravity, Geodesy and Gravity, Reference systems, Geodesy and Gravity, Terrestrial reference systems |
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Publisher
American Geophysical Union 2000 Florida Avenue N.W. Washington, D.C. 20009-1277 USA 1-202-462-6900 1-202-328-0566 service@agu.org |
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