Hennings, Ingo and Herbers, Dagmar (2016) Suspended sediment dynamics above submerged compound sand waves observed during a tidal cycle. In: MARID 2016. Fifth International Conference on Marine and River Dune Dynamics, Caernarfon, United Kingdom, 4-6 April 2016 . , ed. by Van Landeghem, K. J. J., Garlan, T. and Baas, J. H.. Bangor University and SHOM, Bangor, North Wales, UK, pp. 81-84. ISBN 978-2-11-128417-3

Preview

Text Hennings_Ingo.pdf - Reprinted Version Available under License Creative Commons: Attribution-Noncommercial-Share Alike 3.0. Download (328kB) | Preview

Abstract

Detailed Acoustic Doppler Current Profiler (ADCP) data of the three-dimensional current-field, echo intensity, modulation of suspended sediment concentration (SSC), and related water level and wind velocity have been analyzed as a function of water depth over asymmetric submerged compound sand waves during a tidal cycle in the Lister Tief of the German Bight in the North Sea. Signatures of vertical current component, echo intensity and calculated SSC modulation in the water column depend strongly on wind and horizontal current speed as well as on wind and horizontal current direction, respectively. Bursts of vertical current component and echo intensity are triggered by the sand waves itself and also by superimposed megaripples due to current/wave interaction.

Actions (login required)

View Item