Observations of Wind Wave Growth by ERS-1 SARby Chich Y. Peng, Science Systems & Applications, Inc, Lanham, United States,
Antony K. Liu, Science Systems & Applications, Inc, Lanham, United States,
Abstract: Spatial variations of ocean waves can be observed from space-borne synthetic aperture radar (SAR) images of ocean surface. For a steady offshore wind, the growth of wind wave from an upwind coastline depends primarily on the finite fetch distance. From the European Remote Sensing Satellite-1 SAR images, such a case of fetch-dependent growth of wind waves is identified and analyzed. the fetch-dependence of peak spectral density and peak frequency extracted from SAR images compares reasonably well with the power laws obtained from the field measured data.
Subject Headings: Ocean waves | Wind waves | Imaging techniques | Wave spectrum | Power spectral density | Radar
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