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2 results

  • 11 - Harmonic Analysis of Tide

  • Chunyan Li, Louisiana State University
  • Book:
    Time Series Data Analysis in Oceanography
    Published online:
    21 April 2022
    Print publication:
    05 May 2022, pp 190-206

  • Summary

    The objective of this chapter is to discuss some background information of tides and the idea, purpose, and method of harmonic analysis of tides. Harmonic analysis is a special application of the least squares method to tidal signals. A list of 37 major tidal frequencies is provided. The basic theory and an example for the analysis is presented. The time origin of expression of tidal time series and longer-term variation of tidal constituents are discussed. A concise equilibrium tidal theory is included at the end of the chapter for reference.

  • 2 - Tidal Forcing

  • Theo Gerkema, Royal Netherlands Institute for Sea Research
  • Book:
    An Introduction to Tides
    Published online:
    08 June 2019
    Print publication:
    20 June 2019, pp 27-41

  • Summary

    In this chapter, expressions are derived for the tide-generating force and the associated tide-generating potential. The Moon and Sun act as the tide-generating bodies. The declination is introduced followed by an alternative expression for the tide-generating potential in terms of terrestrial coordinates, which serves as a starting point for Chapter 4. The Moon and Sun act as tide-generating bodies; their combined effect is qualitatively shown to result in a spring-neap cycle.