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Date Name Thumbnail Size User Description Versions
10:16, 3 July 2017 WaveRippleFormationFig6a.jpg (file) 157 KB Dronkers J Brick-pattern ripples (courtesy of John F.A. Sleath). 1
10:15, 3 July 2017 WaveRippleFormationFig5ab.jpg (file) 53 KB Dronkers J Regions in the <math>(R_\delta,\psi_d)</math>-plane where a flat bed, rolling-grain ripples, and vortex ripples are expected to appear. Comparison between the theoretical predictions and the laboratory observations. 1
09:49, 3 July 2017 WaveRippleFormationFig4b.jpg (file) 56 KB Dronkers J Vortex ripples (courtesy of John F.A. Sleath). 1
09:48, 3 July 2017 WaveRippleFormationFig4a.jpg (file) 48 KB Dronkers J Rolling-grain ripples (courtesy of John F.A. Sleath). 1
09:47, 3 July 2017 WaveRippleFormationFig4.jpg (file) 47 KB Dronkers J Visualization of the sediments picked-up from the bed and carried into suspension by the vortices shed at the crests of large amplitudes ripples in an oscillatory flow (courtesy of Dr. Megale). 1
09:46, 3 July 2017 WaveRippleFormationFig3.jpg (file) 25 KB Dronkers J Critical value <math>\alpha_{crit}</math> of <math>\alpha</math> plotted versus the flow Reynolds number <math>R_\delta</math> for <math>s=2.65, \mu=0.15, n=0.4</math> and different values of <math>R_d=R_p\sqrt{\psi_d}</math>. 1
09:44, 3 July 2017 WaveRippleFormationFig2.jpg (file) 21 KB Dronkers J Region of existence of ripples and flat beds (adapted from Blondeaux 1990). 1
09:43, 3 July 2017 WaveRippleFormationFig1.jpg (file) 125 KB Dronkers J Steady streaming generated by an oscillatory flow over a wavy wall (adapted from Blondeaux 1990). 1
09:40, 3 July 2017 WaveRippleFormationFig0.jpg (file) 678 KB Dronkers J Ripples observed at Sea Rim State Park, along the coast of east Texas close to the border with Louisiana (courtesy by Zoltan Sylvester). 1
20:44, 30 June 2017 ChadwickFig15f.jpg (file) 111 KB Dronkers J Diffraction (ratio of diffracted wave height and incident wave height) of a normally incident directional random sea state for a breakwater gap width of b=L. 1
20:42, 30 June 2017 ChadwickFig15e.jpg (file) 89 KB Dronkers J Diffraction (ratio of diffracted wave height and incident wave height) of a normally incident directional random sea state for a semi-infinite barrier. 1
20:41, 30 June 2017 ChadwickFig10NEW.jpg (file) 58 KB Dronkers J Some of Goda’s results for the predominant wave direction at a range of relative depths for a typical wind wave state and different predominant wave incident angles at deep water. 1
20:39, 30 June 2017 ChadwickFig9b.jpg (file) 42 KB Dronkers J Comparison of results for the diffraction coefficient between a monochromatic wave and Goda’s result for a directional spectrum of a typical wind wave state. 1
20:37, 30 June 2017 ChadwickFig9a.jpg (file) 41 KB Dronkers J Some of Goda’s results for the diffraction coefficient as a function of relative depth for a typical wind wave state and different predominant wave incident angles at deep water. 1
14:34, 6 June 2017 ChadwickFig20NEW.jpg (file) 19 KB Dronkers J Relationships between principal axes and shoreline axes. 1
09:11, 6 June 2017 ChadwickFig20.jpg (file) 78 KB Dronkers J Relationships between principal axes and shoreline axes. 1
09:10, 6 June 2017 ChadwickFig19.jpg (file) 143 KB Dronkers J Diagram for derivation of wave setdown/setup. 1
09:08, 6 June 2017 ChadwickFig18c.jpg (file) 141 KB Dronkers J Example of a plunging breaker. 1
09:08, 6 June 2017 ChadwickFig18b.jpg (file) 174 KB Dronkers J Example of a spilling breaker. 1
09:07, 6 June 2017 ChadwickFig18a.jpg (file) 525 KB Dronkers J Principal types of breaking waves. 1
09:07, 6 June 2017 ChadwickFig17b.jpg (file) 208 KB Dronkers J A real surf zone at Hope Cove, Devon, England. 1
09:06, 6 June 2017 ChadwickFig17a.jpg (file) 1.32 MB Dronkers J The surf zone, conceptual. 1
09:05, 6 June 2017 ChadwickFig16.jpg (file) 115 KB Dronkers J Approximate regions of validity of analytical wave theories. 1
09:05, 6 June 2017 ChadwickFig15d.jpg (file) 232 KB Dronkers J Aerial photograph of wave diffraction at the Happisburgh to Winterton scheme, Norfolk, England, (courtesy of Mike Page). 1
09:04, 6 June 2017 ChadwickFig15c.jpg (file) 147 KB Dronkers J Physical model study of (b) in the UK Coastal Research Facility at HR Wallingford. 1
09:04, 6 June 2017 ChadwickFig15b.jpg (file) 138 KB Dronkers J Photograph of real wave diffraction at the Elmer breakwater scheme, Sussex, England. 1
09:03, 6 June 2017 ChadwickFig15a.jpg (file) 613 KB Dronkers J Idealised wave diffraction around an impermeable breakwater. 1
09:02, 6 June 2017 ChadwickFig14.jpg (file) 165 KB Dronkers J Wave impact and reflection during a storm. 1
09:02, 6 June 2017 ChadwickFig13.jpg (file) 141 KB Dronkers J Plan view of oblique wave reflection. 1
09:01, 6 June 2017 ChadwickFig12b.jpg (file) 214 KB Dronkers J Standing Waves, observed clapotis. 1
08:59, 6 June 2017 ChadwickFig12a.jpg (file) 22 KB Dronkers J Standing Waves, idealised. 1
08:58, 6 June 2017 ChadwickFig11.jpg (file) 198 KB Dronkers J Deep water wave refraction by a current. 1
08:57, 6 June 2017 ChadwickFig10.jpg (file) 49 KB Dronkers J Reproduced from Goda (2000) Figure 3.7. 1
08:56, 6 June 2017 ChadwickFig9.jpg (file) 187 KB Dronkers J Reproduced from Goda (2000) Figure 3.6. 1
08:56, 6 June 2017 ChadwickFig8.jpg (file) 200 KB Dronkers J Divergence of wave rays over parallel contours. 1
08:55, 6 June 2017 ChadwickFig7.jpg (file) 100 KB Dronkers J Variation of the shoaling coefficient with depth. 1
08:55, 6 June 2017 ChadwickFig6.jpg (file) 233 KB Dronkers J Variations of wave celerity and angle with depth. 1
08:54, 6 June 2017 ChadwickFig5.jpg (file) 141 KB Dronkers J Wave refraction. 1
08:53, 6 June 2017 ChadwickFig4.jpg (file) 407 KB Dronkers J Particle displacements for deep and transitional waves. 1
08:52, 6 June 2017 ChadwickFig3.jpg (file) 11 KB Dronkers J Definition sketch for a sinusoidal wave. 1
08:52, 6 June 2017 ChadwickFig2b.jpg (file) 1.12 MB Dronkers J Wave generation and dispersion. 1
08:50, 6 June 2017 ChadwickFig1.jpg (file) 339 KB Dronkers J Wave generation and dispersion. 1
19:58, 5 June 2017 BlondeauxFig7abc.jpg (file) 70 KB Dronkers J Left: 7a. Brick-pattern ripples observed during a laboratory experiment. Centre: 7b. Three-dimensional vortex ripples observed during a laboratory experiment (7a and 7b courtesy of John F.A. Sleath).Right: 7c. Tile ripples (adapted from Allen<ref name=... 1
13:32, 5 June 2017 BlondeauxFig10.jpg (file) 121 KB Dronkers J The yellow sediment grains are coarser that the red sediments and pile up at the crests of the ripples which are generated in a U-tube by an oscillatory flow. The figure shows a top view of the bottom at two different phases of the cycle (adapted from... 1
13:30, 5 June 2017 BlondeauxFig9.jpg (file) 139 KB Dronkers J Tile ripples. Reproduced from Allen J.R.L. (1984). Sedimentary structures, their character and physical basis. Elsevier, figure 11.12. 1
13:28, 5 June 2017 BlondeauxFig8.jpg (file) 57 KB Dronkers J Three-dimensional vortex ripples observed during a laboratory experiment (courtesy of John F.A. Sleath). 1
13:27, 5 June 2017 BlondeauxFig7.jpg (file) 128 KB Dronkers J Brick-pattern ripples observed during a laboratory experiment (courtesy of John F.A. Sleath). 1
13:26, 5 June 2017 BlondeauxFig6.jpg (file) 20 KB Dronkers J Ripple symmetry index plotted versus the ratio between the mass-transport velocity and the maximum near-bed orbital velocity. 1
13:25, 5 June 2017 BlondeauxFig5.jpg (file) 55 KB Dronkers J Comparison between predicted (line) and observed (points) ripple steepnesses. 1
13:25, 5 June 2017 BlondeauxFig4.jpg (file) 76 KB Dronkers J Comparison between predicted (lines) and observed (points) ripple wavelengths. 1
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