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Detailed Reference Information |
Smyth, C.E. and Li, M.Z. (2005). Wave-current bedform scales, orientation, and migration on Sable Island Bank. Journal of Geophysical Research 110: doi: 10.1029/2004JC002569. issn: 0148-0227. |
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Field observations of wave-current bedforms on Sable Island Bank show that medium to large bedforms were generally aligned with the wave direction, and did not follow the rotating tidal current. Normalized bedform heights and wavelengths were larger than predictions by Nielsen (1992), but agreed well with predictions by Khelifa and Ouellet (2000) which includes current effects. Maximum observed bedform wavelengths of 1.9 m were larger than those predicted for bedforms in wave-dominated nearshore conditions, but this may be expected as the water depths are larger (20--42 m) and currents are present. Measured bedform migration rates had higher vector correlation amplitudes when compared to significant wave velocity than with current velocity or skewness. Migration rate predictions from three presently available models were not able to predict net migration rate and direction in all cases. |
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Abstract |
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Keywords
Marine Geology and Geophysics, Marine sediments, processes and transport, Marine Geology and Geophysics, Seafloor morphology, geology, and geophysics, Oceanography, Physical, Turbulence, diffusion, and mixing processes, Oceanography, Physical, Surface waves and tides, bedform migration, sediment transport, waves and tides |
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Publisher
American Geophysical Union 2000 Florida Avenue N.W. Washington, D.C. 20009-1277 USA 1-202-462-6900 1-202-328-0566 service@agu.org |
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