Wind Speed Measurement From Below The Sea Surface By Correlation

William Brown

doi:10.1117/12.943327

27 September 1984 Wind Speed Measurement From Below The Sea Surface By Correlation

William Brown

Proceedings Volume 0489, Ocean Optics VII; (1984) https://doi.org/10.1117/12.943327
Event: Ocean Optics VII, 1984, Monterey, United States

Abstract

The angular aspect of optical radiation transmitted throuyn the air-sea interface depends upon the effective slope of the particular element of sea surface illuminated at that particular instant of time. Waves and swells strongly effect the resultant rauiance distribution below the surface, by focusing and dispersing small light ray bundles, The air-sea interface, however, is influenced most by small wavelengths and ripples created by the wind. Empirical relationships between wave slope variance and wind speea nave been determined, and the underwater radiance variance is known in terms of the wave slope variance. As a result, it is possible to measure the wind speed from under the surface by sampling the variance of the radiation field there. An alternate method is described here which takes from laser transit velocimetry. Several sensors are placed below tree surface and their signals are correlated for a technique to measure wave ana wind speed.

Citation Download Citation

William Brown "Wind Speed Measurement From Below The Sea Surface By Correlation", Proc. SPIE 0489, Ocean Optics VII, (27 September 1984); https://doi.org/10.1117/12.943327

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