Monitoring morphology of the sand engine leeside using Argus' cBathy

Monitoring morphology of the sand engine leeside using Argus' cBathy

Wengrove, M.E.
Henriquez, M.
De Schipper, M.A.
Holman, R.
Stive, M.J.F.

Civil Engineering and Geosciences

Hydraulic Engineering

2013-06-24

The Sand Engine is a mega-nourishment constructed in 2011 with the purpose of replenishing the surrounding southern Dutch coast by exploiting the strength of local alongshore currents for the next 20 years. Long term monitoring of the Sand Engine depends upon remote sensing coupled with in-situ measurements due to both its large spatial and temporal scales and variability. Herein, emphasis is made upon quantitatively and qualitatively observing the effects of this mega-nourishment upon its leeward side in the direction of the predominant alongshore current. One of the first applications of cBathy along the Dutch coast shows promising results for this remote technique to capture morphodynamics within the area over the coming years. cBathy is an algorithm developed to make estimations of nearshore bathymetry based upon the celerity of the propagating wave field extracted from Argus coastal images. So far, analysis shows that the Dutch wave climate variability influences hourly cBathy depth approximations, however running average depth estimations yield small deviation compared with a measured ground truth bathymetry of the area.

morphology
remote sensing
alongshore currents
beach nourishment
cBathy
Argus

http://resolver.tudelft.nl/uuid:fe4b009f-3c35-49c9-87e0-e0ee24517dd0

Bordeaux University

Coastal Dynamics 2013: 7th International Conference on Coastal Dynamics, Arcachon, France, 24-28 June 2013

Institutional Repository

conference paper

(c) 2013 The Author(s)