Integrated Marine Information System (IMIS)

Data Policy
Persons | Institutes | Publications | Projects | Datasets
[ report an error in this record ]basket (0): add | show Print this page
Sediment mobility in response to tidal and wind-driven flows along the Belgian shelf, southern North Sea
Baeye, M.; Fettweis, M.; Voulgaris, G.; Van Lancker, V. (2012). Sediment mobility in response to tidal and wind-driven flows along the Belgian shelf, southern North Sea, in: Baeye, M. Hydro-meteorological influences on the behaviour and nature of sediment suspensions in the Belgian-Dutch coastal zone = Hydro-meteorologische effecten op het gedrag en samenstelling van sedimentsuspensies in de Belgisch-Nederlandse kustzone. pp. 33-50
In: Baeye, M. (2012). Hydro-meteorological influences on the behaviour and nature of sediment suspensions in the Belgian-Dutch coastal zone = Hydro-meteorologische effecten op het gedrag en samenstelling van sedimentsuspensies in de Belgisch-Nederlandse kustzone. PhD Thesis. Ghent University: Ghent. 170 pp.
Available in  Authors 
Keyword
    Marine/Coastal
Author keywords
    Suspended particulate matter; mixed sediments; high-concentrated mud suspensions; alongshore sediment transport; acoustic and optical backscattering; southern North Sea
Authors  Top 
  • Baeye, M.
  • Fettweis, M.
  • Voulgaris, G.
  • Van Lancker, V.
Abstract
    The effect of hydro-meteorological forcings (tidally- and wind-induced flows) on the transport of suspended particulate matter (SPM), on the formation of highconcentrated mud suspensions and on the occurrence of sand-mud suspensions has been studied using long-term multi-parametric observations. Data have been collected in a coastal turbidity maximum area (southern North Sea) where a mixture of sandy and muddy sediments prevails. Data have been classified according to variations in sub-tidal alongshore currents, with the direction of sub-tidal flow depending on wind direction. This influences the position of the turbidity maximum; as such also the origin of SPM. Winds blowing from the NE will increase SPM concentration, whilst SW winds will induce a decrease. The latter is related to advection of less turbid English Channel water, inducing a shift of the turbidity maximum towards the NE and the Westerscheldt estuary. Under these conditions, marine mud will be imported and buffered in the estuary. Under persistent NE winds, high-concentrated mud suspensions are formed and remain present during several tidal cycles. Data show that SPM consists of a mixture of flocs and locally eroded sand grains during high currents. This has implications towards used instrumentation: SPM concentration estimates from optical backscatter sensors will only be reliable when SPM consists of cohesive sediments only; with mixtures of cohesive and non-cohesive sediments, a combination of both optical and acoustic sensors are needed to get an accurate estimate of the total SPM concentration.
All data in the Integrated Marine Information System (IMIS) is subject to the VLIZ privacy policy Top | Authors 
[Back]

WoRMS

Using WoRMS

Tools

Connect with us

This service is powered by LifeWatch Belgium
Learn more»
Website and databases developed and hosted by Flanders Marine Institute · Page generated on 2024-11-13 02:28:24+01:00 · Privacy and cookie policy