Palmer LTER: Comparison between a global tide model and observed tides at Palmer Station
oX Direct measurements of tidal currents around Antarcticaare sparse (Lutjeharms, Stav opoulis, and Koltermann 1985), and most of the available measurements are from sites at shore-based laboratories. A recent global tidal model (Egbert, Bennett, and Foreman 1994), however, provides an alternative a...
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| Format: | Text |
| Language: | English |
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| Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.461.4486 http://pal.lternet.edu/docs/bibliography/Public/071lterc.pdf |
| Summary: | oX Direct measurements of tidal currents around Antarcticaare sparse (Lutjeharms, Stav opoulis, and Koltermann 1985), and most of the available measurements are from sites at shore-based laboratories. A recent global tidal model (Egbert, Bennett, and Foreman 1994), however, provides an alternative approach for estimating tides around Antarctica, provided the simulated tides are representative of the actual tides. The objective of this article is to compare the simulated tidal structure with that measured at Palmer Station. The global tide model is a generalized inverse model in which the crossover differences from the TOPEX/Poseidon altimeter are fit to the Laplace tidal equations. The model solu tion provides the amplitude and phase of eight tidal con stituents (M2, S2, N2, K2, Kl, 01, PI, Ql) on a latitude-longi tude grid with a spatial resolution of about 40 by 65 kilometers (km) at the latitude of Palmer Station. The surface elevation and tidal velocity are calcu lated using the eight basic tidal constituents and esti mated amplitudes for nine minor constituents (2N2 |
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