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• 15:39, 7 June 2018 Dronkers J (talk | contribs) uploaded File:FringingReefDevelopment.jpg (Typical evolution stages of a fringing reef. Adapted from Mergner and Schuhmacher (1974))
• 19:43, 21 May 2018 Dronkers J (talk | contribs) uploaded File:Groyne.jpg (Typical impact of a groyne on a littoral drift beach: accretion at the updrift side and erosion at the downdrift side. Photo credit: Dan Scutter.)
• 18:53, 21 May 2018 Dronkers J (talk | contribs) uploaded File:SedimentRetentionRiverDams.jpg (Catchment basins with percentage of sediment discharge retained in artificial reservoirs, image from Vorosmarty et al (2003).)
• 11:59, 21 May 2018 Dronkers J (talk | contribs) uploaded File:SeawallDowndriftErosionZanzibar.jpg (Beach erosion downdrift of a seawall at Zanzibar.)
• 11:59, 21 May 2018 Dronkers J (talk | contribs) uploaded File:SeawallToe.jpg (Left: Low eroded beach at the Bardsea seawall, situated on the macrotidal Morecambe Bay (UK); Photo credit: Stephen Mackenzie. Right: Rock infill of a trench scoured at the toe of a seawall at Le Dicq (Island of Jersey): Photo credit: HR Wallingford.)
• 11:57, 21 May 2018 Dronkers J (talk | contribs) uploaded File:NouakchottPorts.jpg (Left: The new seaport of Nouakchott (Mauritania) built in 1985 (image October 2017). Right: The (smaller) old port of Nouakchott, built in 1965, situated ten kilometers north of the new port (image April 2018).)
• 14:48, 28 April 2018 Dronkers J (talk | contribs) uploaded File:RhineConcNitratePhosphate.jpg (Historic development of nitrate (a) and phosphate (b) concentrations in the Rhine.)
• 14:47, 28 April 2018 Dronkers J (talk | contribs) uploaded File:Eutrophication Input Effect OSPAR2010.jpg (Sources of nutrient input to the marine environment and simplified schemes showing eutrophication effects arising from nutrient enrichment. OSPAR 2010.)
• 11:23, 27 April 2018 Dronkers J (talk | contribs) uploaded File:DuneErosionEgmond.jpg (Dune scarp after collapse.)
• 11:21, 27 April 2018 Dronkers J (talk | contribs) uploaded File:DuneScarpEgmond.jpg (Dune scarp at Egmond aan Zee after a storm surge.)
• 11:20, 27 April 2018 Dronkers J (talk | contribs) uploaded File:DUROSmodel.jpg (Method for estimating dune erosion from an empirical post-storm equilibrium profile.)
• 11:18, 27 April 2018 Dronkers J (talk | contribs) uploaded File:DuneFailureMechanisms.jpg (Dune failure mechanisms.)
• 11:17, 27 April 2018 Dronkers J (talk | contribs) uploaded File:BadhotelSchiermonnikoog 1924.jpg (Badhotel at Schiermonnikoog after the 1924 storm.)
• 22:13, 24 April 2018 Dronkers J (talk | contribs) uploaded File:EgmondCoastalRetreat.jpg (Shoreline retreat Egmond aan Zee Dutch coast 17th-19th century.)
• 14:30, 24 April 2018 Dronkers J (talk | contribs) uploaded File:ActiveCoastalZone.jpg (Schematic representation of the active coastal zone for a dune coast.)
• 14:31, 21 April 2018 Dronkers J (talk | contribs) uploaded a new version of File:ConveyorBelt Broecker Maier-Reimer.jpg (Simplified scheme of the global thermohaline circulation, adapted from Broecker (1991) <ref. Broecker, W.S. 1991. The Great Ocean conveyor. Oceanography 4 (2), 79–89.</ref>)
• 14:28, 21 April 2018 Dronkers J (talk | contribs) uploaded File:ConveyorBelt Broecker Maier-Reimer.jpg (Simplified scheme of the global thermohaline circulation, adapted from Broecker (1991) <ref. Broecker, W.S. 1991. The Great Ocean conveyor. Oceanography 4 (2), 79–89.</ref>)
• 10:59, 21 April 2018 Dronkers J (talk | contribs) uploaded File:AMOC.jpg (Schematic representation of the Atlantic Meridional Overturning Current.)
• 10:56, 21 April 2018 Dronkers J (talk | contribs) uploaded File:ConveyorBelt NASA.jpg (Simplified picture of the conveyor belt. Credit: NASA.)
• 20:19, 20 April 2018 Dronkers J (talk | contribs) uploaded File:Ocean-Currents gkplanet.jpg (Ocean surface currents <ref>http://www.gkplanet.in/2017/05/oceanic-currents-of-world-pdf.html</ref>)
• 19:55, 16 April 2018 Dronkers J (talk | contribs) uploaded File:RockyShorePlatform Holyhead-Wales UK Nigel Barry.jpg (Rocky shore platform, Holyhead, Wales (UK). Photo credit: Nigel Barry.)
• 19:54, 16 April 2018 Dronkers J (talk | contribs) uploaded File:CliffErosion Bonifacio Corsica Andrea Papi.jpg (Cliff erosion at Bonifacio, Corsica. Photo credit: Andrea Papi.)
• 11:36, 16 April 2018 Dronkers J (talk | contribs) uploaded File:DebenEstuary.JPG (Deben estuary, UK. Photo credit: Bescoe)
• 12:26, 23 November 2017 Dronkers J (talk | contribs) uploaded File:MarBiolValuationBelgium.jpg (Biological valuation maps of areas located near three main harbours at the Belgian coastal zone: (a) Nieuwpoort (Lombardsijde); (b) Oostende (Oostende-East); (c) Zeebrugge (Baai van Heist).)
• 16:21, 3 August 2017 Dronkers J (talk | contribs) uploaded File:BlondeauxFig7ab.jpg (Left: 7a. Brick-pattern ripples observed during a laboratory experiment. Right: 7b. Three-dimensional vortex ripples observed during a laboratory experiment (7a and 7b courtesy of John F.A. Sleath).)
• 10:27, 3 July 2017 Dronkers J (talk | contribs) uploaded File:WaveRippleFormationFig14.jpg (Time evolution of the crests of the ripples generated by the growth of a sandy Gaussian hump which interacts with an oscillatory flow (adapted from Marieu et al. 2008).)
• 10:25, 3 July 2017 Dronkers J (talk | contribs) uploaded File:WaveRippleFormationFig13.jpg (Vorticity contours of the oscillatory flow over a wavy wall at different wave phases.)
• 10:23, 3 July 2017 Dronkers J (talk | contribs) uploaded File:WaveRippleFormationFig12.jpg (Ratio between the amplitude <math>U_0/\omega</math> of the fluid displacement oscillations and the wavelength <math>\lambda</math> of the ripples plotted versus the parameter <math>\rho d/(\rho_s-\rho) g T^2</math>.)
• 10:22, 3 July 2017 Dronkers J (talk | contribs) uploaded File:WaveRippleFormationFig11.jpg (Theoretical value of the symmetry index plotted versus <math>U_s/U_0</math>.)
• 10:21, 3 July 2017 Dronkers J (talk | contribs) uploaded File:WaveRippleFormationFig10.jpg (Theoretical and experimental values of the dimensioless migration speed of ripples plotted versus <math>R_\delta</math>.)
• 10:20, 3 July 2017 Dronkers J (talk | contribs) uploaded File:WaveRippleFormationFig9.jpg (Equilibrium profile of the ripples predicted by the stability analysis of Blondeaux et al. (2015).)
• 10:17, 3 July 2017 Dronkers J (talk | contribs) uploaded File:WaveRippleFormationFig7.jpg (Limiting curves dividing the <math>(R_\delta, \psi_d)</math>-plane in regions where a flat bed, rolling grain ripples, two-dimensional vortex ripples, brick-pattern ripples are expected to form.)
• 10:16, 3 July 2017 Dronkers J (talk | contribs) uploaded File:WaveRippleFormationFig6a.jpg (Brick-pattern ripples (courtesy of John F.A. Sleath).)
• 10:15, 3 July 2017 Dronkers J (talk | contribs) uploaded File:WaveRippleFormationFig5ab.jpg (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.)
• 09:49, 3 July 2017 Dronkers J (talk | contribs) uploaded File:WaveRippleFormationFig4b.jpg (Vortex ripples (courtesy of John F.A. Sleath).)
• 09:48, 3 July 2017 Dronkers J (talk | contribs) uploaded File:WaveRippleFormationFig4a.jpg (Rolling-grain ripples (courtesy of John F.A. Sleath).)
• 09:47, 3 July 2017 Dronkers J (talk | contribs) uploaded File:WaveRippleFormationFig4.jpg (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).)
• 09:46, 3 July 2017 Dronkers J (talk | contribs) uploaded File:WaveRippleFormationFig3.jpg (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>.)
• 09:44, 3 July 2017 Dronkers J (talk | contribs) uploaded File:WaveRippleFormationFig2.jpg (Region of existence of ripples and flat beds (adapted from Blondeaux 1990).)
• 09:43, 3 July 2017 Dronkers J (talk | contribs) uploaded File:WaveRippleFormationFig1.jpg (Steady streaming generated by an oscillatory flow over a wavy wall (adapted from Blondeaux 1990).)
• 09:40, 3 July 2017 Dronkers J (talk | contribs) uploaded File:WaveRippleFormationFig0.jpg (Ripples observed at Sea Rim State Park, along the coast of east Texas close to the border with Louisiana (courtesy by Zoltan Sylvester).)
• 20:44, 30 June 2017 Dronkers J (talk | contribs) uploaded File:ChadwickFig15f.jpg (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.)
• 20:42, 30 June 2017 Dronkers J (talk | contribs) uploaded File:ChadwickFig15e.jpg (Diffraction (ratio of diffracted wave height and incident wave height) of a normally incident directional random sea state for a semi-infinite barrier.)
• 20:41, 30 June 2017 Dronkers J (talk | contribs) uploaded File:ChadwickFig10NEW.jpg (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.)
• 20:39, 30 June 2017 Dronkers J (talk | contribs) uploaded File:ChadwickFig9b.jpg (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.)
• 20:37, 30 June 2017 Dronkers J (talk | contribs) uploaded File:ChadwickFig9a.jpg (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.)
• 14:34, 6 June 2017 Dronkers J (talk | contribs) uploaded File:ChadwickFig20NEW.jpg (Relationships between principal axes and shoreline axes.)
• 09:11, 6 June 2017 Dronkers J (talk | contribs) uploaded File:ChadwickFig20.jpg (Relationships between principal axes and shoreline axes.)
• 09:10, 6 June 2017 Dronkers J (talk | contribs) uploaded File:ChadwickFig19.jpg (Diagram for derivation of wave setdown/setup.)
• 09:08, 6 June 2017 Dronkers J (talk | contribs) uploaded File:ChadwickFig18c.jpg (Example of a plunging breaker.)

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