Time Periodic Sand Ripples at the Oregon Coast

Honors College Thesis

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Citeable URL: https://ir.library.oregonstate.edu/concern/honors_college_theses/p5547x503

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Attribute Name	Values
Creator	Korn, Abraham
Abstract	We consider development of sand ripples in shallow water flows which do not reach an equilibrium height but have a time-varying ripple height that slowly reaches a maximum value and then is quickly destroyed by the fluid. A simple scenario to explain the time periodic behavior of the sand ripples is proposed and applied to data observed here. Our data for the wavelengths agree reasonably with previous observations of steady-state, deep ripples. The ripples we observed never became as tall as those previously reported for deep flows. This suggests that once the ripples coalesce into a pattern, the ripple height increases as more sand is deposited until the flow becomes turbulent and the pattern is destroyed before the deep-water steady state is achieved, The cycle then repeats as the newly flattened surface again faces instability and ripples grow at a determined wavelength.
Resource Type	Honors College Thesis
Date Issued	2004-06-03
Degree Level	Bachelor's
Degree Name	Honors Bachelor of Science (H.B.S.)
Degree Field	Physics
Degree Grantor	Oregon State University
Commencement Year	2004
Advisor	Siemens, Philip J.
Non-Academic Affiliation	Oregon State University. Honors College
Rights Statement	In Copyright
Publisher	Oregon State University
Peer Reviewed	No
Language	English [eng]

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