Numerical Modelling And Video Analysis Of Intermediate Beach State Transitions

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Title Numerical Modelling And Video Analysis Of Intermediate Beach State Transitions
Author Strauss, Darrell; Browne, Matthew; Tomlinson, Rodger Benson; Hughes, Lawrence Peter
Publication Title Proceedings of the 7th International Conference on HydroScience and Engineering (ICHE 2006)
Editor M. Piasecki, S.S.Y. Wang, K.P. Holz, M. Kawahara, A. Gonzalez, B. Beran
Year Published 2006
Place of publication Philadelphia, USA
Publisher Drexel University
Abstract Numerical modelling of beach morphodynamics is generally recognized as a valuable tool for scientists and coastal managers. However, the utility of numerical models is constrained by our ability to establish that the theoretical dynamics match reality. The integrated modules for simulating wave propagation, hydrodynamics and sediment transport in Delft3D, developed by Delft Hydraulics, were applied to simulate observed beach state transitions in response to wave-induced forcing. Initial model bathymetry was derived from hydrographic surveys conducted at Narrowneck beach during the pre- and post-construction phases of the Narrowneck artificial reef (Boak, McGrath and Jackson 2000, Hutt, Black and Mead 1998). The present study addresses the validity of morphological modelling of an exposed beach by comparing the evolution of a numerical model with data observed using remote imaging. Narrowneck beach on the Gold Coast is a micro-tidal, exposed coast subject to a highly variable wave climate. This beach is monitored by an ARGUS Coastal Imaging system generating high temporal frequency geo-referenced estimates of wave dissipation that may be used to infer sub-tidal bar morphology (Alexander and Holman 2004, Aarninkhof and Ruessink 2004, Turner, Dronkers, Roman, Aarninkhof and McGrath 2001). The numerical model was broadly validated, in that, when driven by similar conditions, the surf zone morphological development is consistent with that observed via optical sensing.
Peer Reviewed Yes
Published Yes
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Copyright Statement Copyright remains with the authors 2005. The attached file is posted here with permission of the copyright owners for your personal use only. No further distribution permitted.For information about this conference please refer to the publisher’s website or contact the authors.
ISBN 0977447405
Conference name 7th International Conference on HydroScience and Engineering (ICHE 2006)
Location Philadelphia, USA
Date From 2006-09-10
Date To 2006-09-13
Date Accessioned 2009-02-16
Language en_US
Research Centre Griffith Centre for Coastal Management
Faculty Faculty of Science, Environment, Engineering and Technology
Subject PRE2009-Environmental Engineering
Publication Type Conference Publications (Full Written Paper - Refereed)
Publication Type Code e1a

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