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SAR Observation of Rip Currents off the Portuguese Coast

  • J. C. B. da Silva

Signatures of rip currents can be identified in SAR images and aerial photographs of the near-shore. An area on the Portuguese West coast (bathymetry and wave climate of which are briefly described) was studied. An image corresponding to low wind speed conditions is shown, where a series of rip-like cell features are consistent with rip current morphology. A simple model is presented to explain the signatures, based on wind contrast due to the relative water motion within rip currents. The model is discussed for near-threshold wind conditions of Bragg wave excitation.

Keywords

Internal Wave Synthetic Aperture Radar Significant Wave Height Wave Breaking Synthetic Aperture Radar Image 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media B.V 2008

Authors and Affiliations

  • J. C. B. da Silva
    • 1
  1. 1.Institute of OceanographyUniversity of LisbonPortugal

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