Add to ORKGSand grains, bedforms and the wave boundary layer cause roughness for tidal currents. This paper reports roughness and current shear stress in calm weather and storms derived from 1900 hours of detailed flow measurements on a sandy shoreface, 2 km off Noordwijk, The Netherlands. Two methods are employed: fitting logarithmical velocity profiles to data of 3 to 7 sensors, and the inertial subrange method from the spectra collected at 2 Hz. The results are compared to observed bedform dimensions. Various technical problems are discussed. The roughness decreases for increasing current velocity in Hm0 waves <2 m, but increases for larger waves. Individual events show contrasting trends that are probably related to bedform development. Reco...
Abstract: A positive surge results from a sudden change in flow that increases the depth, and a geop...
Characterization of the near-bed flow structure is critical in understanding the coastal bottom boun...
International audienceImages of sea surface roughness—for example, obtained by synthetic aperture ra...
Sand grains, bedforms and the wave boundary layer cause roughness for tidal currents. This paper rep...
This report describes a review of field measurements concerning the variation of the seabed roughnes...
Bed roughness is an important parameter for the prediction of sediment transport as well as calculat...
Understanding the behaviour of bedforms and the related sediment transport is a key issue in coastal...
International audienceWind and wave effects on tidal current structure and turbulence throughout the...
Tidal sand ridges and long bed waves are large-scale bedforms that are observed on continental shelv...
This study presents the small scale bedform states found off the South-Holland coast during a 31+ da...
Bed load transport rates on the shoreface and shelf are determined by tidal currents, wave-current i...
Produced within Defra project FD1905 (EstProc). Calculations and numerical modelling of the erosion...
Drag force at the bed acting on water flow is a major control on water circulation and sediment tran...
Seabed drag coefficients have been measured at a site within the Norfolk Banks and at a site within ...
Seabed drag coefficients have been measured at a site within the Norfolk Banks and at a site within ...
Abstract: A positive surge results from a sudden change in flow that increases the depth, and a geop...
Characterization of the near-bed flow structure is critical in understanding the coastal bottom boun...
International audienceImages of sea surface roughness—for example, obtained by synthetic aperture ra...
Sand grains, bedforms and the wave boundary layer cause roughness for tidal currents. This paper rep...
This report describes a review of field measurements concerning the variation of the seabed roughnes...
Bed roughness is an important parameter for the prediction of sediment transport as well as calculat...
Understanding the behaviour of bedforms and the related sediment transport is a key issue in coastal...
International audienceWind and wave effects on tidal current structure and turbulence throughout the...
Tidal sand ridges and long bed waves are large-scale bedforms that are observed on continental shelv...
This study presents the small scale bedform states found off the South-Holland coast during a 31+ da...
Bed load transport rates on the shoreface and shelf are determined by tidal currents, wave-current i...
Produced within Defra project FD1905 (EstProc). Calculations and numerical modelling of the erosion...
Drag force at the bed acting on water flow is a major control on water circulation and sediment tran...
Seabed drag coefficients have been measured at a site within the Norfolk Banks and at a site within ...
Seabed drag coefficients have been measured at a site within the Norfolk Banks and at a site within ...
Abstract: A positive surge results from a sudden change in flow that increases the depth, and a geop...
Characterization of the near-bed flow structure is critical in understanding the coastal bottom boun...
International audienceImages of sea surface roughness—for example, obtained by synthetic aperture ra...