Advertisement

Ocean Tide Determination from Satellite Altimetry

  • R. D. Brown
  • M. K. Hutchinson
Part of the Marine Science book series (MR, volume 13)

Abstract

Tides in the deep ocean can be measured directly by satellite altimetry, independent of assumptions about earth tides, crustal loading, bottom topography, and dissipation. Thus, satellite altimeter techniques are free of the uncertainties which plague numerical tide models. These uncertainties can yield a one-meter error in predicted tide height in the Northeast Pacific, for example.

Several different techniques for recovering tides from satellite altimetry have been investigated, with mixed results. These techniques differ mainly in the approach to solving the satellite orbit error problem. Orbit error translates directly into tide height error and several investigators have found that the orbit error is not sufficiently random to ignore. However, for data arcs of less than 1/2-orbit in length, one can separate the longer wavelength orbit error from the shorter wavelength ocean tide effects. In such short arcs, the orbit error may be parameterized by a low order polynomial and corrected in a least squares data adjustment. Harmonic analyses can then be performed on the differences in sea height at satellite subtrack intersections (crossovers). Preliminary results yield good agreement with bottom pressure gauge measurements at several points, indicating that these altimeter tide determinations are feasible and that the orbit error problem can be solved.

A time series harmonic analysis at selected points of high crossover density in the Northeast Pacific indicates that the M2 tide changes spatially more rapidly than has been predicted. This may be due to wave trapping effects around ridge and seamount structures. Future analysis of SEASAT altimeter data is expected to yield global tide charts for the major tidal components to 5o by 5o resolution.

Keywords

Ocean Tide Satellite Altimetry Altimeter Data Earth Tide Geoid Height 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. Brown, R.D. and Hutchinson, M.K., 1979, “Deep Ocean Tide Determination from SEASAT Altimetry,” (abstract) EOS, Trans. Am. Geophys. Union, 60(46), 807.Google Scholar
  2. Brown, R.D. and Lo, H.H., 1979, “Definition of Tides in Shelf Waters from Altimetry,” (abstract) EOS, Trans. Am. Geophys. Union, 60(7), 89.Google Scholar
  3. Hendershott, M.C., 1973, “Ocean Tides,” EOS, Trans. Am. Geophys. Union, 54 (2).Google Scholar
  4. Kahn, W.D., Siry, J.W., Brown, R.D. and Wells, W.T., 1979, “Ocean Gravity and Geoid Determination,” J. of Geophys. Res., 84 (188), 3872–3882.CrossRefGoogle Scholar
  5. Kuo, J.T. and Jachens, R.C., 1977, “Indirect Mapping of Ocean Tides by Solving the Inverse Problem for the Tidal Gravity Observations,” Ann. Geophys., T. 33, Fasc. 1 /2, 73–82.Google Scholar
  6. Kuo, J.T., Jachens, R.C. and Lee, S.S., 1979, “The Northeastern Pacific 01 and North Atlantic M2 Ocean Tides as Derived from Inversion,” Eighth International Symposium on Earth Tides, Bonn, F.R.G., September 19–24.Google Scholar
  7. Larsen, L.H. and Irish, J.D., 1975, “Tides at Cobb Seamount,” J. of Geophys. Res., 80 (12), 1691–1695.CrossRefGoogle Scholar
  8. Lerch, F.J., Wagner, C.A., Klosko, S.M. and Laubscher, R.E., 1978, “Gravity Model Improvement Using GEOS-3 Altimetry (GEM lOA and lOB),”EOS, Trans. Am. Geophys. Union, 59 (4), 260.Google Scholar
  9. Maul, G.A. and Yanaway, A., 1978, “Deep Sea Tides Determination from GEOS-3,” NASA Wallops Flight Center, Contractor Report 141435.Google Scholar
  10. Munk, W.H. and Cartwright, D.E., 1966, “Tidal Spectroscopy and Prediction,” Phil. Trans. Roy. Soc. London, A259, 533–581.Google Scholar
  11. Munk, W.H., Snodgrass, F. and Wimbush, M., 1970, “Tides Off-Shore: Transition from California Coastal to Deep Sea Waters,” Geophys. Fluid Dynamics, 1, 161–235.CrossRefGoogle Scholar
  12. Rapatz, W.S. and Huggett, W.S., 1977, “Pacific Ocean Off-Shore Tidal Program,” Proc. 15th Int. Cong, of Surveyors, Comm. 4, Hydro- graphic Surveying, 179–195.Google Scholar
  13. Schwiderski, E.W., 1978, “Global Ocean Tides, Part I: A Detailed Hydrodynamical Interpolation Model,” Naval Surface Weapons Center, Dahlgren Laboratory Report NSWC/DL TR-3866.Google Scholar
  14. Won, I.J. and Miller, L.S., 1978, “Oceanic Geoid and Tides Obtained from GEOS-3 Satellite Data in the Northwestern Atlantic Ocean,” NASA Wallops Flight Center, Contractor Report 156845.Google Scholar
  15. Zetler, B.D. and Maul, G.A., 1971, “Precision Requirements for a Spacecraft Tide Program,” J. of Geophys. Res., 76 (28), 6601–6605.CrossRefGoogle Scholar

Copyright information

© Plenum Press, New York 1981

Authors and Affiliations

  • R. D. Brown
    • 1
  • M. K. Hutchinson
    • 1
  1. 1.Phoenix CorporationMcLeanUSA

Personalised recommendations