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Date Name Thumbnail Size User Description Versions
23:11, 12 January 2021 OysterWEC.jpg (file) 136 KB Dronkers J Bottom-hinged wave energy converter Oyster. 1
23:10, 12 January 2021 DEXAWEC.jpg (file) 104 KB Dronkers J DEXA wave energy converter and working principle. 1
17:35, 9 January 2021 TENG.jpg (file) 76 KB Dronkers J Principle of tribo-electric nanogenerators. (a) Laterally sliding dielectric films (b) Soft contact rolling-mode spherical TENG (SS-TENG). From Huang et al. (2020), Creative Commons licence. 1
13:17, 9 January 2021 DirectElectricalDrive.jpg (file) 63 KB Dronkers J Schematic of a linear electrical generator based on a permanent magnet generator. From Ahamed et al. (2020). 1
10:00, 9 January 2021 WaveAbsorbers.jpg (file) 208 KB Dronkers J Different energy conversion principles based on absorption of wave energy. 1
21:05, 8 January 2021 WaveDragon.jpg (file) 170 KB Dronkers J Wave Dragon overtopping wave energy converter. 1
21:04, 8 January 2021 SparBuoy.jpg (file) 88 KB Dronkers J Spar buoy wave energy converter. 1
21:02, 8 January 2021 OWCbuoy.jpg (file) 76 KB Dronkers J Wave energy buoy based on the oscillating water column principle. 1
21:01, 8 January 2021 WellsTurbine.jpg (file) 60 KB Dronkers J Prototype of a Wells turbine. 1
20:59, 8 January 2021 REWEC.jpg (file) 134 KB Dronkers J Wave energy conversion using the principle of the oscillating water column. 1
20:44, 4 January 2021 EcosystemHysteresis.jpg (file) 41 KB Dronkers J Hysteresis in ecosystem response to temporary disturbance. 1
12:45, 31 December 2020 ExplodedReef.jpg (file) 158 KB Dronkers J Coral reef destroyed by blast fishery. Source: Reefs at risk in southeast Asia. World Resources Institute, 2002. 1
12:44, 31 December 2020 ReefsDestructiveFishing.jpg (file) 285 KB Dronkers J Reefs threatened by destructive fishing. Source: Reefs at risk in southeast Asia. World Resources Institute, 2002.) 1
15:03, 30 December 2020 ScallopFishingGear.jpg (file) 516 KB Dronkers J Scallop fishing gear. Photo credit: Michel Kaiser. 1
16:26, 27 December 2020 WorldProdFisheryAquacultureFAO.jpg (file) 88 KB Dronkers J Global trends in different types of fisheries. Source: FAO (2020) 1
15:49, 27 December 2020 TrendOverfishedFAO.jpg (file) 68 KB Dronkers J Global trend in overfishing. Source: FAO (2020). 1
16:12, 22 December 2020 DensitySalinityTemperaturePlot.jpg (file) 83 KB Dronkers J Density-salinity-temperature plot. Source: NASA. 1
15:26, 22 December 2020 SaltFingers.jpg (file) 61 KB Dronkers J Schematic picture of salt fingers. Blue=lower density, red=higher density. 1
15:25, 22 December 2020 Stratification.jpg (file) 33 KB Dronkers J Well-mixed (left) and stratified (right) water column. 1
15:24, 22 December 2020 EstCirc.jpg (file) 58 KB Dronkers J Schematic picture of estuarine circulation. 1
20:04, 16 December 2020 AtlanticCod.jpg (file) 211 KB Dronkers J Atlantic cod. Photo credit NOAA. 1
20:03, 16 December 2020 StellersSeaCow.jpg (file) 20 KB Dronkers J Steller's sea cow. Photo credit Emoke Denes. 1
20:02, 16 December 2020 KelpForest.jpg (file) 121 KB Dronkers J Kelp forest. Photo credit NOAA 1
20:01, 16 December 2020 SeaUrchin.jpg (file) 39 KB Dronkers J Sea urchin. Photo credit US National Park Service. 1
20:01, 16 December 2020 SeaOtter.jpg (file) 68 KB Dronkers J Sea otter. Photo credit US Fish and Wildlife. 1
20:22, 7 December 2020 BeamTrawler.jpg (file) 47 KB Dronkers J Beam trawler. Photo credit Flanders Government. 1
11:28, 7 December 2020 CausesSpeciesLossMap.jpg (file) 190 KB Dronkers J Causes of species loss for different marine regions. From Luypert et al., 2020, Creative Commons licence. 1
22:02, 4 December 2020 LopheliaPertusa.jpg (file) 123 KB Dronkers J ''Lophelia Pertusa''. Photo credit J.M.Roberts. 1
17:33, 28 November 2020 ResilienceTrajectories.jpg (file) 114 KB Dronkers J Schematic representation of the trajectories of a (socio-)ecological system in a plane defined by the system state (fundamental structure, processes, and functioning - vertical axis) and the change of environmental conditions (horizontal axis), for dif... 2
20:30, 26 November 2020 CaulerpaTaxifolia.jpg (file) 307 KB Dronkers J The invasive green algae, Caulerpa taxifolia. Photo credit Richard Ling 1
10:59, 24 November 2020 FauneVasiere.jpg (file) 59 KB Dronkers J Tidal flats are densely populated with organisms such as worms and bivalves that support the estuarine and marine food web. Illustration J-C. Goubert. 1
17:45, 23 November 2020 MarshRestorationHumber.jpg (file) 455 KB Dronkers J Marsh restoration projects in the Humber estuary. 1
16:26, 20 November 2020 SeagrassWaddenSchleswig-Holstein.jpg (file) 178 KB Dronkers J Areal size (ha) of seagrass beds (coverage >60% and coverage 20-60%) in the intertidal zone of the Northfrisian Wadden Sea (Schleswig-Holstein) as estimated from aerial surveys in August or September between 1994 and 2015. Source: Wadden Sea Quality St... 1
16:16, 20 November 2020 SeagrassWaddenGriend.jpg (file) 297 KB Dronkers J Seagrass field on an intertidal flat of the Vlie basin in the western Wadden Sea, 3 years after reintroduction. Source: Omroep Fryslan. 1
22:57, 14 November 2020 GreenAlgae D Ramirez.jpg (file) 342 KB Dronkers J Macroalgae washed ashore. Photo credit D. Ramirez 1
15:38, 14 November 2020 OceanHypoxia.jpg (file) 198 KB Dronkers J Areas with hypoxia in coastal seas (red) and in the oceans (blue). From IOC-UNESCO 2018 Creative Commons Licence. 1
16:22, 13 November 2020 GlobalInputN.jpg (file) 267 KB Dronkers J Estimated net anthropogenic nitrogen inputs (NANI) according to the world’s main river catchments. Source: Billen et al., 2013. 1
22:07, 12 November 2020 FertilizerUseNP.jpg (file) 58 KB Dronkers J N and P content of global fertilizer use. 1
11:20, 26 October 2020 WaterLevels.jpg (file) 163 KB Dronkers J Time series of water level calculated with BW04, DiSC in the deepest part of the tidal channel together with the measured water level. 1
10:35, 26 October 2020 BathyListWest.jpg (file) 107 KB Dronkers J Bathymetry of area of investigation acquired by multibeam echosounder. 1
10:34, 26 October 2020 BathyWB04.jpg (file) 150 KB Dronkers J Averaged bathymetry over 12h obtained from the BW04 method. 1
10:33, 26 October 2020 ErrorWB04.jpg (file) 107 KB Dronkers J Map of the relative error of the BW04 method. 1
10:33, 26 October 2020 ErrorDiSC.jpg (file) 91 KB Dronkers J Map of the relative error of the DiSC method. 1
20:08, 24 October 2020 WERAspectrum.jpg (file) 77 KB Dronkers J Typical backscatter spectrum of sea echoes, normalized to the strongest signal measured by WERA. 1
20:07, 24 October 2020 WERAantenna.jpg (file) 162 KB Dronkers J Typical example of an antenna installation for WERA radar. 1
20:06, 24 October 2020 WindFieldOffBrest.jpg (file) 178 KB Dronkers J Example of measured wind direction measured by HF radar of the coast of Brest (France). 1
20:05, 24 October 2020 WaveFieldOffBrest.jpg (file) 195 KB Dronkers J Wave field measured by HF radar off the coast of Brest. 1
20:04, 24 October 2020 RDCPScheme.jpg (file) 97 KB Dronkers J Ship with mounted Radar Doppler Current Profiler (RDCP). 1
20:03, 24 October 2020 RDCPcurrent.jpg (file) 262 KB Dronkers J The two maps show the current distribution within a tidal channel in the German bight (Lister Tief) obtained with RDCP. Left panel: current speed; right panel: current direction. 1
20:02, 24 October 2020 RadarGeometry.jpg (file) 168 KB Dronkers J Geometry microwave radar. 1
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