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• Harbour porpoise in the Belgian part of the North Sea
  ...deels and whiting, which are found on the seabed mostly in areas of strong tidal currents (see below in <span class="plainlinks">[http://www.coastalwiki.org ...Like in other odontocetes, its underwater hearing covers a wide frequency range and it has an efficient directional hearing capacity. The tympanic bulla (e
  77 KB (11,773 words) - 16:58, 17 February 2024
• Sand-filled geosystems in coastal engineering
  Sand-filled geosystems can be used in a wide range of coastal engineering applications. This article provides a summary of des ...er, groyne or seawall), in coastal areas exposed to low wave energy and/or tidal regime, on projects where there is no risk to life or assets in the event o
  33 KB (4,961 words) - 17:31, 20 May 2020
• Bedforms and roughness
  ...is strongly related to the water depth (<math>h</math>) with values in the range of <math>(3 - 15) \, h</math>, with <math>(6 - 7) \, h</math> as most usual ...mlines on the upstream side of the bedform (inertial effect) and the short range of the additional turbulent friction and momentum dissipation produced by t
  36 KB (5,526 words) - 12:43, 17 May 2024
• Sand transport
  ...e lower reaches of the river (estuary or tidal river) the influence of the tidal motion may introduce non-steady effects with varying current velocities and ...ransport is herein defined as the transport of particles with sizes in the range of 0.05 to 2 mm as found in the bed of rivers, estuaries and coastal waters
  42 KB (6,585 words) - 21:05, 30 December 2023
• Sediment deposition and erosion processes
  ...al particles do not constitute sediment. However, as clay particles in the range of 1 to 0.1 μm are often found in flocs they are conveniently designated a ...cohesion. The median diameter of the size distribution is typically in the range of 1-2 μm and the spread is about 0.1 to 10 μm, which does not match the
  63 KB (9,960 words) - 23:03, 28 April 2024
• Estuarine morphological modelling
  ...De Vriend<ref name=V95>De Vriend HJ (1995). Mathematical modelling of meso-tidal barrier island coasts, Part I: Empirical and semi-empirical models. In: Liu ...n the cross-sectional area below mean sea level of a tidal channel and the tidal discharge that moves through it.
  36 KB (5,524 words) - 21:38, 28 June 2019
• Shelf sea exchange with the ocean
  ...ed <ref name=GM> Green MO, McCave IN, 1995. Seabed drag coefficient under tidal currents in the eastern Irish Sea. Journal of Geophysical Research 100 (C8 ...road shelf seas, where tidal currents are strongest and much of the global tidal energy dissipation occurs. Thus tides are an example of full ocean – she
  34 KB (5,118 words) - 12:02, 29 June 2020
• Infragravity waves
  ...omson, J., Elgar, S., Raubenheimer, B., Herbers, T.H.C., Guza, R.T., 2006. Tidal modulation of infragravity waves via nonlinear energy losses in the surfzon ...e short-wave spectral peak during energy loss. Energy is spread to a large range of higher (short-wave) frequencies, but overall less energy is removed from
  25 KB (3,848 words) - 16:22, 25 February 2023
• Extreme storms
  ...an significantly affect navigation and petroleum platforms and can cause a range of potential hazards to coastal areas, such as [[overwash]]ing and/or inund Sea level is composed of three components, namely the mean sea level, the tidal level and zero mean surge level (i.e. the meteorological residual)<ref> Pug
  25 KB (3,812 words) - 20:36, 18 September 2023
• Sand ridges in shelf seas
  Three categories of large linear sand ridges can be distinguished: tidal ridges, shoreface-connected ridges and long bed waves. We discuss the chara ==Tidal sand ridges==
  22 KB (3,464 words) - 15:25, 24 April 2021
• Rhythmic shoreline features
  ...e driven current and they are up-current oriented. Their spacing is in the range <math>L \approx</math> 15 -200 m. It seems that some medium energy finger b ..., and P. Bretel (2013), Formation and migration of transverse bars along a tidal sandy coast deduced from multi-temporal lidar datasets, Mar. Geol., 342, 39
  41 KB (6,530 words) - 10:19, 3 July 2022
• Swash zone dynamics
  ...he swash zone varies over different timescales, from orders of seconds and tidal periods to years and decades. This is a challenge for coastal scientists, b ...numerous variations, the underlying scaling still holds over a very large range of wave conditions, both in the laboratory and field.
  32 KB (4,942 words) - 12:58, 5 April 2021
• Wave ripples
  which are characterized by a wide range of length scales. The ripples are similar to the ripples generated by steady currents/slowly varying tidal
  20 KB (3,172 words) - 14:32, 29 June 2019
• Wave ripple formation
  ...mer. Indeed, regular long-crested wave ripple fields are often observed on tidal beaches from which the sea has withdrawn at low water (see figure 1). ...time. Increasing values of <math>\psi_d</math> lead to an increase of the range of unstable wavenumbers while decreasing values of <math>\psi_d</math> make
  38 KB (6,021 words) - 21:14, 3 July 2020
• Estuarine ecosystems
  ! width="10%" style=" border:1px solid blue; font-size: 11px;"| Salinity range ...lid lightblue; font-size: 11px;text-align:center"| tidal river (seaward of tidal limit)
  22 KB (3,117 words) - 23:14, 20 January 2024
• Characteristics of sedimentary shores
  ...ent type, sediment supply, wave climate and tidal regime. Wave climate and tidal regime bear some relationship with the size of the adjacent sea. For each s Another characteristic parameter is the ratio <math>RTR</math> of spring tidal amplitude, <math>H_{spring tide}</math> and the significant wave height <ma
  24 KB (3,854 words) - 16:00, 30 June 2020
• Shoreface profile
  ...f wave parameters]]). Typical values of the outer closure depth are in the range 15 – 40 m. ...t rule out significant sediment transport across this boundary due to e.g. tidal currents, wind-driven currents, ocean currents or internal waves. For examp
  59 KB (9,016 words) - 11:16, 19 April 2024
• Ocean and shelf tides
  ...periods derived from the various astronomical cycles. The most important tidal components have a periodicity close to semidiurnal or diurnal. ...range: the vertical interval between high and low water levels. The tidal range is commonly classified in three categories: macrotides (ranges exceeding 4
  27 KB (4,146 words) - 23:36, 19 January 2024
• European Platform for Biodiversity Research Strategy: Recommendations 2005 meeting
  ...coastal defences on non-target systems and species, including promotion of range extensions on non-natural habitat; *Determine the impacts of tidal and wave projects on marine biodiversity;
  8 KB (1,083 words) - 17:18, 1 August 2019
• Application of radar hydrography in the German Wadden Sea
  Significant changes in bathymetry are the result of waves, tidal currents and storm events. In the area of the ‘Lister Tief’ (Fig. 1) th ...and b show the speed and direction of the surface current field within the tidal gully ‘Lister Tief’. This is overlaid by a current modulation due to th
  7 KB (1,137 words) - 17:04, 29 June 2019

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