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Computation and approximation of the length scales of harmonic modes with application to the mapping of surface currents in the Gulf of Eilat
Lekien, F.; Gildor, H. (2009). Computation and approximation of the length scales of harmonic modes with application to the mapping of surface currents in the Gulf of Eilat. J. Geophys. Res. 114(C6). dx.doi.org/10.1029/2008JC004742
In: Journal of Geophysical Research. American Geophysical Union: Richmond. ISSN 0148-0227, more
Peer reviewed article  

Available in Authors 
    VLIZ: Open Repository 231067 [ OMA ]

Keyword
    Marine

Authors  Top 
  • Lekien, F., more
  • Gildor, H.

Abstract
    Open-boundary modal analysis (OMA) is a generalized Fourier transform that interpolates, extrapolates, and filters scattered current measurements and produces smooth current maps in coastal areas. Boundary conditions are enforced by adjusting the OMA modes to the coastline. Filtering is achieved by discarding OMA modes whose length scales are below a selected threshold. In this paper, we determine the length scale of the OMA modes, and we derive approximated formulas. Operational use of the OMA modes and the length scale formulas are illustrated on surface currents measured by high-frequency radar in the Gulf of Eilat (Gulf of Aqaba).

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