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Detailed Reference Information |
Cartwright, D.E. and Ray, R.D. (1990). Oceanic tides from Geosat altimetry. Journal of Geophysical Research 95: doi: 10.1029/89JC03021. issn: 0148-0227. |
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Direct tidal analysis of the altimetry from the Geosat Exact Repeat Mission's first year is used to derive estimates of the diurnal and semidiurnal oceanic tides. The geoid is removed by collinear differences at 34.1-day separation, and the orbit error is reduced by subtracting a slowly modulated 1 cycle/revolution term. A sequence of independent analyses at grid areas of 1¿ latitude¿1.5¿ longitude using ''orthotide'' functions ensures complete definition of the diurnal and semidiurnal species. Global admittance maps for M2 and S2 within the latitudes 58 ¿N and 59 ¿S compare well with ground truth at 66 open-ocean sites. Maps of differences between Geosat and the Naval Surface Weapons Center model show important areas of the order of 10--15 cm. The integral for the global power input from the moon gives 2.51 TW (M2), 0.44 TW (S2), lower than many previous estimates, but in agreement with figures deduced from a recent analysis of satellite orbits. ¿ American Geophysical Union 1990 |
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Abstract |
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Keywords
Oceanography, Physical, Surface waves and tides, Oceanography, Physical, Instruments and techniques |
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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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