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Date Name Thumbnail Size User Description Versions
22:05, 16 May 2024 SeabedRipplesBahamas.jpg (file) 147 KB Dronkers J Symmetrical ripples in biogenic, aragonitic sand (shallow subtidal seafloor just offshore from Sand Dollar Beach, nw San Salvador Island, eastern Bahamas). Photo credit James St. John. Creative Commons Licence 1
22:04, 16 May 2024 RiverBedRipplesKennetcookRiver.jpg (file) 288 KB Dronkers J Current-generated linguoid ripples, Kennetcook River, Nova Scotia, Canada. Photo credit J. Waldron https://sites.ualberta.ca/~jwaldron/ 1
22:03, 16 May 2024 CurrentRipplesMSM.jpg (file) 103 KB Dronkers J Current ripples in a fine-sediment channel bed, Baie du Mont Saint Michel. 1
22:02, 16 May 2024 AntidunesWillametteRiver.jpg (file) 139 KB Dronkers J Antidunes in the Willamette River (USA). Photo credit Marli Miller. https://geologypics.com/ 1
17:51, 16 May 2024 BedformDiagram.jpg (file) 122 KB Dronkers J Bedform stability diagram for unidirectional currents. Redrawn after Southard and Boguchwal (1990). 1
11:52, 16 May 2024 RippleModels.jpg (file) 423 KB Dronkers J Empirical ripple prediction formulas. Left: Predictions of the ripple height. Right: Predictions of the ripple wavelength. 2
11:39, 10 May 2024 DAPPScheme.jpg (file) 81 KB Dronkers J Steps of the Dynamic Adaptation Policy Pathways approach. From Haasnoot et al. (2013) 2
17:42, 4 May 2024 MytilicultureSaintMichel.jpg (file) 348 KB Dronkers J Mussel farm in Baie du Mont Saint Michel (France). Mussel cultivating takes place on poles (bouchots) drilled deep into the seabed. For seed collection, a coconut fiber rope is wrapped in a spiral around the post. When time comes for grow-out, a nettin... 1
16:23, 28 April 2024 DepositionFluxFlocs.jpg (file) 74 KB Dronkers J Deposition flux of flocculated sediment from the San Francisco Bay tested in a flume. Modified from Mehta et al. (2014) 2
10:14, 28 April 2024 SettlingvelocityBarataria.jpg (file) 34 KB Dronkers J Settling velocity as function of the velocity shear rate measured in Barataria basin (USA Gulf coast). Redrawn after McDonell et al. (2024). 1
17:02, 27 April 2024 OsmosisProcess.jpg (file) 203 KB Dronkers J Osmosis through a semi-permeable membrane that allows passage of solvent molecules (blue) while blocking the passage of solute molecules (red). 2
13:23, 22 April 2024 Lysocline.jpg (file) 53 KB Dronkers J Zones of calcite and aragonite dissolution. Redrawn after Harris et al. (2023). 1
19:55, 15 April 2024 RippleRegimeTransportCompressed.gif (file) 1.9 MB Dronkers J Wave-induced sand transport over a seabed ripple. Courtesy Jebbe van der Werf. 1
17:59, 6 April 2024 BeachClassification.jpg (file) 51 KB Dronkers J Beach morphologies according to the parameters <math>\Omega</math> and <math>RTR</math>. Reflective beaches are found in the red zone and dissipative beaches in the blue zone. 2
14:34, 4 April 2024 MangroveRootSystems.jpg (file) 82 KB Dronkers J Mangrove root systems. Avicennia, Rhizophora and Bruguiera, from left to right, after Marchand (2008) 1
16:23, 1 April 2024 BeachRockBrazil.jpg (file) 194 KB Dronkers J Beachrock along the Brazilian coast. 1
16:12, 31 March 2024 WaveTransmissionEasternScheldtOysterReef.jpg (file) 68 KB Dronkers J Comparison of Eq. (1) (red dashed line) with the wave transmission coefficient measured (blue/green/yellow dots)on an oyster reef in the Eastern Scheldt (Netherlands). Insert: Shape of the oyster reef. 1
14:48, 30 March 2024 PontoonBreakwaters.jpg (file) 96 KB Dronkers J Different types of pontoon breakwaters. 1
20:16, 28 March 2024 SubmergedBreakwaterErosionSedimentation.jpg (file) 54 KB Dronkers J Flow circulation patterns behind a submerged breakwater for shore-normal wave incidence. Beach erosion or beach accretion may occur depending on the type of circulation pattern. 1
21:34, 26 March 2024 ColumnRevetment.jpg (file) 255 KB Dronkers J Column revetment of Marazion sea wall, Cornwall, United Kingdom. Credit: Charles Gould. Licensed under Creative Commons 1
19:09, 27 February 2024 WavePlungeLipari.jpg (file) 175 KB Dronkers J Plunging wave, still from the video by Vincentz 2013 https://zenodo.org/records/8070591 under licence CC Y-SA (attribution and share-alike). 1
17:08, 23 February 2024 PsephurusGladius.jpg (file) 319 KB Dronkers J The Chinese paddlefish (''Psephurus gladius''). Image public domain. 1
11:56, 23 February 2024 WavePlunge.jpg (file) 94 KB Dronkers J Plunging wave, still from the video by Vincentz 2013 https://zenodo.org/records/8070591 under licence CC Y-SA (attribution and share-alike). 1
19:03, 22 February 2024 ArcticIceCover.jpg (file) 77 KB Dronkers J Arctic sea ice extent for several years between 2012 and 2024 compared to the average extent over the period 1981-2010. The gray areas around the median line show the interquartile and interdecile ranges of the data. Image credit National Snow and Ice... 1
17:59, 16 February 2024 Gabion-hengistbury-head.JPG (file) 231 KB Dronkers J Picture of Gabions at hengistbury head. Taken by teacher (Mr. grice) and uploaded by en:User:Lmc169 |Source=Originally from [http://en.wikipedia.org en.wikipedia]; description page is/was [http://en.wikipedia.org/w/index.ph 1
12:59, 16 February 2024 CoastalErosionSophieDay.png (file) 211 KB Dronkers J Coastal erosion, England. Photo credit Sophie Day. Creative Commons Licence. https://www.weforum.org/agenda/2022/10/coastal-erosion-environment-uk-climate/ 1
15:43, 14 February 2024 NorthSeaEmodnet.jpg (file) 104 KB Dronkers J North Sea bathymetry. From [https://www.marineregions.org/gazetteer.php?p=image&pic=115811 EMODNET] Creative Commons licence 1
22:05, 8 February 2024 OilSlick.jpg (file) 53 KB Dronkers J Aerial image of an oil slick. Photo credit The Norwegian Coastal Administration/NOFO/Sundt Air. https://www.sciencenorway.no/environmental-protection-environmental-technology-forskningno/detecting-oil-spills-with-satellite/1460647 1
18:23, 6 February 2024 WaddenOilSpill.jpg (file) 185 KB Dronkers J Numerical simulation of oil spill locations 5 days after hypothetical oil releases on 15th of March 2008 at 04:00 UTC from a black oil tanker and a blue oil tanker. Dashed spills are mixed over the water column by dispersant application. Full black and... 1
17:44, 4 February 2024 EuropeanShagChristophMoning.jpg (file) 250 KB Dronkers J European shag (''Gulosus aristotelis''). Photo credit Christoph Monin [https://ebird.org/science/status-and-trends ebird.org] 1
17:27, 4 February 2024 DeepwaterHorizonWikimedia.jpg (file) 71 KB Dronkers J The Deepwater Horizon on fire. Photo Wikimedia. 1
17:16, 4 February 2024 PrestigeSinkingWikimedia.jpg (file) 111 KB Dronkers J Sinking of the Prestige. Photo Wikimedia. 1
17:00, 4 February 2024 ExxonValdezShigenaka.jpg (file) 63 KB Dronkers J Exxon Valdez at Outside Bay, May 1989. Photo credit Gary Shigenaka, NOAA. 1
19:47, 19 January 2024 ConvergingEstuarySchematization.jpg (file) 259 KB Dronkers J Schematization of a strongly converging estuary. (a) Plan view; (b) 3D view. 2
17:06, 15 January 2024 WaveSpitLagoon.jpg (file) 51 KB Dronkers J Schematic plan view of a wave-dominated estuary/lagoon semi-closed by a sand spit (highly oblique wave incidence). 1
17:05, 15 January 2024 WaveBarrierIslandLagoon.jpg (file) 45 KB Dronkers J Schematic plan view of a wave-dominated estuary/lagoon with barrier island (close-to-normal wave incidence). 1
17:04, 15 January 2024 WaveTideBarrierIslandsEstuary.jpg (file) 62 KB Dronkers J Schematic plan view of a wave- and tide-dominated estuary with barrier islands (close-to-normal wave incidence). 1
17:03, 15 January 2024 WaveTideSpitEstuary.jpg (file) 57 KB Dronkers J Schematic plan view of a wave- and tide-dominated estuary (highly oblique wave incidence). 1
16:52, 15 January 2024 EstuaryColors.jpg (file) 46 KB Dronkers J Colors in estuary planviews 2
18:22, 27 December 2023 MgmtRealignWallaseaIsland.jpg (file) 142 KB Dronkers J Salt marsh restoration Wallasea Island, UK, by managed realignment. Photo credit John Akerman. 2
14:12, 27 December 2023 GrassCoveredSeadike.jpg (file) 418 KB Dronkers J Grass covered dike, Wolphaartsdijk - Veerse Meer, Zeeland, Netherlands (Image Bank Rijkswaterstaat, photo Jan van den Broeke). 1
13:28, 27 December 2023 OysterReefConstructionEcoshapeSmall.jpg (file) 82 KB Dronkers J Development of an oyster reef in the Eastern Scheldt (Netherlands) for protection against tidal flat erosion. Photo credit Ecoshape Building with Nature https://www.ecoshape.org/en/ 1
12:55, 27 December 2023 ReefBallEcoshape.jpg (file) 83 KB Dronkers J Left: Reef balls. Right: Reef ball breakwater. Image credit Ecoshape Building with nature. https://www.ecoshape.org/en/ 1
11:54, 27 December 2023 ReefBallBreakwater.jpg (file) 28 KB Dronkers J Reef ball breakwater. Image credit Ecoshape Building with Nature https://www.ecoshape.org/en/ 1
22:35, 25 December 2023 NematodeCaenorhabditisElegans.jpg (file) 50 KB Dronkers J Nematode ''Caenorhabditis elegans''. Photo credit Bob Goldstein, UNC Chapel Hill 1
22:30, 25 December 2023 HarpacticoidCopepod.jpg (file) 79 KB Dronkers J Harpacticoid copepod. Photo credit Lodewijk van Walraven. 1
22:52, 13 December 2023 PorePressureBuildUp.jpg (file) 149 KB Dronkers J Time variation of pore water pressure at a certain depth. After Sui et al. 2020. 2
18:44, 21 November 2023 NourishmentLongshore.jpg (file) 246 KB Dronkers J Evolution Gaussian-shape nourishment (a = 100 m, \sigma_0 = 1000 m) with littoral drift (<math>Q_0 = 4 \, 10^5 m^3/yr)</math> and berm height + closure depth <math>D = 8 m</math>. Blue curve: <math>t=0</math>, red curve <math>t=10 year</math>. No cross... 1
23:11, 17 November 2023 WaveAngles.jpg (file) 70 KB Dronkers J Wave incidence angles in a 1-line model where the breaker line is parallel to the shoreline. 1
20:37, 16 October 2023 DistributionNonLinearWaves.jpg (file) 54 KB Dronkers J The probability density distributions Eq. (C3) for <math>S=0</math> (blue) and <math>S=0.3</math> (red). 1
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