Predicting wave-induced ripple equilibrium geometry

View/ Open
Date
2013-06-28Author
Nelson, Timothy R.
Concept link
Voulgaris, George
Concept link
Traykovski, Peter A.
Concept link
Metadata
Show full item recordCitable URI
https://hdl.handle.net/1912/6300As published
https://doi.org/10.1002/jgrc.20241DOI
10.1002/jgrc.20241Keyword
Wave-induced ripples; Equilibrium ripples; Ripple height; Ripple wavelength; Ripple steepnessAbstract
A comprehensive database of existing (since 1954) field and laboratory measurements of ripple geometry is compiled and combined with newly collected field data to examine the performance of ripple equilibrium predictors. Reanalysis of this enlarged ripple geometry data set reveals that ripples formed from monochromatic waves scale differently than ripples formed from random waves for many existing ripple predictors. Our analysis indicates that ripple wavelengths from the two data sets collapse into a single scaling when the semiorbital excursion and sediment grain diameter are used as normalizing factors. Ripple steepness remains relatively constant for both regular and irregular wave conditions, and it only slightly increases for shorter ripple wavelengths. These findings allowed for the development of a new equilibrium ripple predictor suitable for application in a wide range of wave and sediment conditions.
Description
Author Posting. © American Geophysical Union, 2013. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Journal of Geophysical Research: Oceans 118 (2013): 3202–3220, doi:10.1002/jgrc.20241.
Collections
Suggested Citation
Journal of Geophysical Research: Oceans 118 (2013): 3202–3220Related items
Showing items related by title, author, creator and subject.
-
Dispersion of fine particles by wave-induced mass transport near a circular island
Womeldorf, Carole A. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1993-08)We begin with the linearized irrotational theory describing the diffraction of an incoming plane wave by a vertical cylinder. From the free-surface motion, we describe the boundary-layer flow field U0i near that cylinder. ... -
Wave-induced sediment transport and onshore sandbar migration
Hsu, Tian-Jian; Elgar, Steve; Guza, R. T. (2006-04-06)The 25-m onshore migration of a nearshore sandbar observed over a 5-day period near Duck, NC is simulated with a simplified, computationally efficient, wave-resolving singlephase model. The modeled sediment transport is ... -
Characteristics of storms driving wave-induced seafloor mobility on the U.S. East Coast continental shelf
Dalyander, P. Soupy; Butman, Bradford (Elsevier, 2015-05-12)This study investigates the relationship between spatial and temporal patterns of wave-driven sediment mobility events on the U.S. East Coast continental shelf and the characteristics of the storms responsible for them. ...