Applying a unified directional wave spectrum to the remote sensing of wind wave directional spreading

Heron, Malcolm L. (2002) Applying a unified directional wave spectrum to the remote sensing of wind wave directional spreading. Canadian Journal of Remote Sensing, 28 (3). pp. 346-353.

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Abstract

Models for directional wind wave spectra can be used to assist in interpretation and analysis of Doppler sea echo spectra to determine wind direction over the oceans by remote sensing techniques. This paper compares and contrasts the data analysis required at different electromagnetic wavelengths. At large wavenumbers the observed spreading depends not only on the directional spreading at the Bragg wavenumber, but also on the weighted integrals over all shorter wavenumbers. This is discussed in terms of microwave and VHF Doppler spectra. At small wavenumbers (HF) the observed directional spreading should be directly predicted by the model. It is in this simple case that there is an inconsistency between the models and the observations, and this has a potential impact on the use of the models at all wavenumbers.

Item ID: 27429
Item Type: Article (Research - C1)
ISSN: 1712-7971
Keywords: directional wave spectrum, wind waves, directional spreading
Date Deposited: 23 Oct 2013 22:10
FoR Codes: 04 EARTH SCIENCES > 0405 Oceanography > 040503 Physical Oceanography @ 100%
SEO Codes: 96 ENVIRONMENT > 9699 Other Environment > 969902 Marine Oceanic Processes (excl. Climate Related) @ 100%
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