Factors influencing subaqueous dunes in the Scheldt Estuary
(2004) Geo-Marine Letters : an international journal of marine geology — Vol. 24, n° 1, p. 14-21 (2004)
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- The size (wavelength and height) and the factors influencing the characteristics of subaqueous dunes in the river Scheldt between Antwerp and the Belgian-Dutch border were studied. More than 60 dune clusters (each cluster represented by a mean height and wavelength of mostly 10 to 20 or more observations) were analysed. A very good exponential correlation between dune height and wavelength was observed (r=0.90) which can be described by H-mean=0.0321L(0.918). Length/depth ratios vary between 0.2 and 9, height/depth ratios between 0.25 and 0.01. There was no clear relationship between current velocity and dune size, as dunes of various sizes co-exist at the same current velocities. Twenty-two dunes were sampled and show grain sizes (d50) ranging between 0.1 and 0.7 mm. Seven out of eight large scale dune fields were found in sandy and/or hard bottom (gravel, coarse sand and shell fragments) environments, whereas small and medium dunes were found in muddy sand and sandy mud environments.
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Francken, F., Wartel, S., Parker, R., & Taverniers, E. (2004). Factors influencing subaqueous dunes in the Scheldt Estuary. Geo-Marine Letters : an international journal of marine geology, 24(1), 14-21. https://doi.org/10.1007/s00367-003-0154-x (Original work published 2004)