User contributions for Dronkers J

10:3710:37, 30 August 2024 diff hist +209 N File:PhaseLead.jpg The phase lead angle <math>\phi</math> of the bed shear stress relative to the bed perturbation as a function of <math>k \, d_{50}</math>. Figure adapted from Charru et al. (2013<ref name=C13/>).

18:0218:02, 22 August 2024 diff hist +256 N File:Bedform7.jpg If oscillating flow is assumed to be equivalent to successive periods of steady flow from the right and from the left, then the net resulting flow pattern consists of circulation cells that move sediment grains from the troughs to the crests. current
18:0018:00, 22 August 2024 diff hist +117 N File:Bedform6.jpg Flow pattern adjusted to a bed perturbation similar as in Fig. 5, but with the flow direction reversed. current
17:5817:58, 22 August 2024 diff hist +200 N File:Bedform5.jpg The negative vorticity balance on the upstream side of the ripple drives a counterclockwise circulation, while the positive balance on the downstream side drives a clockwise circulation. current
17:2917:29, 22 August 2024 diff hist +110 N File:Bedform4.jpg Transport of vorticity (rotational component of velocity) at the ripple trough and ripple crest. current
17:2917:29, 22 August 2024 diff hist +141 N File:Bedform3.jpg The velocity profiles at the ripple trough and the ripple crest corresponding to the contraction-divergence of the streamlines. current
17:2717:27, 22 August 2024 diff hist +372 N File:Bedform2.jpg The emerging ripple is eroded where the shear stress increases due to contraction of the streamline toward the sediment bed. Accretion occurs where streamlines diverge from the sediment bed. The erosion-accretion boundary is shifted by the saturation l... current
17:2617:26, 22 August 2024 diff hist +101 N File:Bedform1.jpg Steady flow streamlines over an emerging bed ripple in a vertical longitudinal section. current

20:3320:33, 15 August 2024 diff hist 0 Talk:Wave energy converters in coastal structures No edit summary current
20:2820:28, 15 August 2024 diff hist +3 Talk:Wave energy converters No edit summary
20:2320:23, 15 August 2024 diff hist 0 Talk:Non-native species invasions No edit summary current
20:1720:17, 15 August 2024 diff hist 0 Talk:Salinity No edit summary
19:4619:46, 15 August 2024 diff hist +1,515 Coastal and marine sediments No edit summary
15:0515:05, 15 August 2024 diff hist +175 TBT and intersex in periwinkles No edit summary
15:0215:02, 15 August 2024 diff hist +24 TBT and Imposex No edit summary
15:0015:00, 15 August 2024 diff hist +57 Endocrine disrupting compounds in the coastal environment No edit summary
14:5714:57, 15 August 2024 diff hist +163 TBT No edit summary
14:5414:54, 15 August 2024 diff hist +1,415 Antifouling paints No edit summary
11:4111:41, 15 August 2024 diff hist +13 Algal bloom dynamics No edit summary
10:4910:49, 15 August 2024 diff hist +587 Algal bloom dynamics No edit summary

14:4814:48, 14 August 2024 diff hist +1,259 Ecological enhancement of coastal protection structures No edit summary

14:4814:48, 13 August 2024 diff hist +633 Blue carbon sequestration No edit summary
14:3014:30, 13 August 2024 diff hist +59 Talk:Mangroves No edit summary
14:2714:27, 13 August 2024 diff hist +2,508 Mangroves No edit summary

14:0514:05, 12 August 2024 diff hist −6 Littoral drift and shoreline modelling No edit summary
13:2013:20, 12 August 2024 diff hist +2,124 Littoral drift and shoreline modelling No edit summary
09:1709:17, 12 August 2024 diff hist 0 File:WaveAngles.jpg Dronkers J uploaded a new version of File:WaveAngles.jpg current

10:5110:51, 11 August 2024 diff hist +76 Sand spit No edit summary

21:1321:13, 10 August 2024 diff hist +534 Oil spill monitoring No edit summary
19:1419:14, 10 August 2024 diff hist +45 Index of vulnerability of littorals to oil pollution No edit summary current
19:0919:09, 10 August 2024 diff hist −410 Multifunctionality and Valuation in coastal zones: concepts, approaches, tools and case studies No edit summary
19:0419:04, 10 August 2024 diff hist +8 Pressures, impacts and policy responses in European coastal zones No edit summary current
19:0119:01, 10 August 2024 diff hist −36 MarBEF outreach No edit summary current
18:5818:58, 10 August 2024 diff hist +8 Overview of oil spills events from 1970 to 2000 No edit summary
18:5418:54, 10 August 2024 diff hist −400 Contingent Valuation Method No edit summary current
18:4918:49, 10 August 2024 diff hist +8 North Sea pollution from shipping: legal framework No edit summary current
12:0712:07, 10 August 2024 diff hist +218 Nature-based shore protection No edit summary

20:3020:30, 9 August 2024 diff hist +64 Rocky shore morphology No edit summary
16:3016:30, 9 August 2024 diff hist +1,880 Rocky shore morphology No edit summary
10:3610:36, 9 August 2024 diff hist +2,130 Coral islands No edit summary
09:1809:18, 9 August 2024 diff hist +412 N File:BumpheadParrotfish JennyHuang.jpg Bumphead parrotfish. Parrotfish contribute to bioerosion by rasping algae from coral and other rocky substrates with their teeth tightly packed on the external surface of their jaw bones. For example, parrotfish grazing accounted for the production of... current