Abstract
Current meter records from two depths, approximately 1000 and 3000 m, at three moorings in the deep mid-Arabian Sea were used to study tidal components. Tidal ellipses for the semi-diurnal (M2, S2 and K2) and the diurnal (K1, and P1) tidal constituents have been determined using the currents recorded at hourly intervals during May 1986–May 1987. The clockwise rotating M2 tidal currents were the strongest. The maximum horizontal velocities due to M2,2 and K1 tides were 2.2 cm/s, l.0cm/s and 0.89 cm/s respectively. The amplitudes of the other two constituents (P1, and K2) were much smaller. The barotropic M2 ellipses have been estimated by averaging the M2 tidal currents at the upper and lower levels. Although the amplitudes of computed ellipses are lower than those that have been predicted using numerical models of global tidal model, their orientations are the same.
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References
Cartwright D E and Ray R D 1990 Oceanic tides from GEOSAT altimetry;J. Geophys. Res. 95 3069–3090
Foreman M G G 1977 Manual for tidal heights analysis and prediction. Institute of Ocean Sciences (Canada); Pacific Marine Science Report, 77-10, 97 pp
Foreman M G G 1978 Manual for tidal current analysis and prediction. Institute of Ocean Sciences (Canada); Pacific Marine Science Report, 78-6, 70 pp
Godin G 1972The analysis of tides (Toronto: University of Toronto Press) 264 pp
Gould W J and McKee W D 1973 Vertical structure of semi-diurnal tidal currents in the Bay of Biscay;Nature (London) 244 88–91
Levitus S 1982 Climatological Atlas of the World Ocean; NOAA Professional paper 13, US Department of Commerce, Washington, DC
Magaard L and McKee W D 1973 Semi diurnal tidal currents at site ‘D’;Deep Sea Res. 20 997–1009
Nair R R, Ittekkot V, Mainginini S J, Ramaswamy V, Haake B, Degens E T, Desai B N and Honjo S 1989 Increased particle flux to the deep ocean related to monsoons;Nature (London) 338 749–751
Pekeris C L and Accad Y 1969 Solution of Laplace’s equations for the M2 tide in the world oceans;Phil. Trans. R. Soc. (London) A265 413–436
Regal R and Wunsch C 1973 M2 tidal currents in the western north Atlantic;Deep Sea Res. 20 493–502
Roberts J 1975Internal gravity waves in the ocean (New York: Marcel Dekker) 274 pp
Schwiderski E W 1979 Global Ocean tides part II: The semi-diurnal principal lunar tide (M2), atlas of tidal charts and maps; Naval Surface Weapons Center Technical report No. 79-414
Schwiderski E W 1980 Ocean tides II: A hydrodynamic interpolation model;Mar. Geod. 3 219–255
Schwiderski E W 1981a Global Ocean tides part III: The semi-diurnal principal solar tide (S2), atlas of tidal charts and maps; Naval Surface Weapons Center Technical report No. 81-122
Schwiderski E W 1981b Global Ocean tides part IV: The diurnal luni-solar declination tide (K1). atlas of tidal charts and maps; Naval Surface Weapons Center Technical report No. 81-142
Shetye S R, Shenoi S S C and Sundar D 1991 Observed low frequency currents in the deep mid Arabian sea;Deep Sea Res. 38 57–65
Weisberg R H, Halpern D, Tang T Y and Hwang S M 1987 M2 tidal currents in the eastern equatorial Pacific ocean;J. Geophys. Res. 15 3821–3826
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Shenoi, S.S.C., Gouveia, A.D. & Shetye, S.R. Diurnal and semidiurnal tidal currents in the deep mid-Arabian Sea. Proc. Indian Acad. Sci. (Earth Planet Sci.) 101, 177–189 (1992). https://doi.org/10.1007/BF02840351
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DOI: https://doi.org/10.1007/BF02840351