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High-frequency bistatic sea-floor scattering from sandy ripple bottom

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3 Author(s)
Jee Woong Choi ; Appl. Phys. Lab., Univ. of Washington, Seattle, WA, USA ; Jungyul Na ; Kwan-Seob Yoon

To obtain the bistatic scattering function on the sandy ripple bottom, high-frequency bistatic sea-floor scattering measurements were made in the shallow waters off the east coast of Korea. A sand ripple field was present at the site, with wavelength generally in the 10-20-cm range. The mean ripple orientation relative to the direction of wave propagation was estimated to be roughly 20°-30°. Field experiments were made to measure forward (in-plane) and out-of-plane scattering from the ripple bottom. The measured scattering strengths were compared to the predictions of the APL-UW bistatic scattering model. Overall, forward-scattering strength measurements showed favorable comparison with the model predictions. The global scattering characteristics for the ripple bottom gave an augmented out-of-plane scattering.

Published in:

Oceanic Engineering, IEEE Journal of  (Volume:28 ,  Issue: 4 )