Accelerated numerical simulation to investigate morphology changes around small tidal inlets

ABSTRACT Among the state-of-the-art methods to study coastal processes using numerical modeling, input reduction techniques are advantageous with a significant reduction of required resources, particularly when conducting long-term simulations. This paper evaluates the suitability of these techniques to perform an accelerated morphological simulation, using a Delft3D coupled wave-hydrodynamic-sediment transport model for a small, jettied tidal inlet system (Currumbin Creek, Australia). Three different wave data reduction techniques were applied, namely categorized wave cases (CWC), synthetic wave events (SWE), and seasonally averaged wave events (SAWE). The results were compared with each other and a benchmark study – in particular, the required annual entrance dredging (equivalent to infilling) volume. The CWC, SWE and SAWE methods resulted in about +7%, – 8% and +1% larger infilling volume than the benchmark study, respectively. SAWE was found to be the fastest of all. However, in contrast to the SWE method, no intermediate results would be achieved using the CWC or SAWE methods and only the final pattern of sedimentation or the final volume of channel infilling can correctly be obtained.

[1]  D C Patterson,et al.  Sand Transport and Shoreline Evolution, Northern Gold Coast, Australia , 2024, Journal of Coastal Research.

[2]  Jennifer Prestigiacomo,et al.  A Hybrid Approach , 2018, How High the Sky?.

[3]  I. Nistor,et al.  Field and numerical investigations of the morpho-hydrodynamic processes of the tidal inlet at Shippagan Gully, New Brunswick, Canada , 2018, Coastal Engineering Journal.

[4]  Diego A. Pantoja,et al.  An approach to an optimal T-head jetty: a numerical simulation case in Chamela Bay, Mexico , 2018, Coastal Engineering Journal.

[5]  V. Chegini,et al.  Prediction of nontidal sea level variations in the Persian Gulf using data assimilation techniques , 2018, Coastal Engineering Journal.

[6]  R. Tomlinson,et al.  Hydrosedimentological Modelling of a Small, Trained Tidal Inlet System, Currumbin Creek, Southeast Queensland, Australia , 2017, Journal of Coastal Research.

[7]  R. Tomlinson,et al.  Numerical modelling to assess maintenance strategy management options for a small tidal inlet , 2017 .

[8]  R. Tomlinson,et al.  Morphological evolution of the Nerang River Entrance ebb-tidal delta , 2016 .

[9]  A. Short.  The Coastal Studies Unit and Development of the Australian Beach Models , 2016 .

[10]  S. Anastasiou,et al.  Assessment of Shoreline Changes and Evaluation of Coastal Protection Methods to Mitigate Erosion , 2016 .

[11]  G. Perillo,et al.  Analysis of Sedimentation Problems at the Entrance to Mar del Plata Harbor , 2016, Journal of Coastal Research.

[12]  B. C. Prooijen,et al.  Human impacts on morphodynamic thresholds in estuarine systems , 2015 .

[13]  Zhaoqing Yang,et al.  Responses of estuarine circulation and salinity to the loss of intertidal flats – A modeling study , 2015 .

[14]  Paula Camus,et al.  Selecting model scenarios of real hydrodynamic forcings on mesotidal and macrotidal estuaries influenced by river discharges using K-means clustering , 2015, Environ. Model. Softw..

[15]  C. Mudersbach,et al.  Statistical Assessment of Storm Surge Scenarios Within Integrated Risk Analyses , 2015 .

[16]  F. Shi,et al.  Numerical Simulation of Nearshore Hydrodynamics and Sediment Transport Downdrift of a Tidal Inlet , 2015 .

[17]  Hocine Oumeraci,et al.  A Hybrid Approach Using Hydrodynamic Modeling and Artificial Neural Networks for Extreme Storm Surge Prediction , 2015 .

[18]  S. Elgar,et al.  Observations of wave effects on inlet circulation , 2014 .

[19]  Emlyn M. Jones,et al.  Analysing coastal ocean model outputs using competitive-learning pattern recognition techniques , 2014, Environ. Model. Softw..

[20]  R. Tomlinson,et al.  Hydrodynamics of a small trained tidal inlet (Currumbin Creek, Australia) , 2014 .

[21]  Shu Gao,et al.  Modeling interrelationships between morphological evolution and grain-size trends in back-barrier tidal basins of the East Frisian Wadden Sea , 2014, Geo-Marine Letters.

[22]  J. Hansen,et al.  Understanding processes controlling sediment transports at the mouth of a highly energetic inlet system (San Francisco Bay, CA) , 2013 .

[23]  Jing Luo,et al.  Numerical modelling of hydrodynamics and sand transport in the tide-dominated coastal-to-estuarine region , 2013 .

[24]  K. Blackmore,et al.  An insight into headland sand bypassing and wave climate variability from shoreface bathymetric change at Byron Bay, New South Wales, Australia , 2013 .

[25]  Dirk-Jan R. Walstra,et al.  Input reduction for long-term morphodynamic simulations in wave-dominated coastal settings , 2013 .

[26]  Henk M. Schuttelaars,et al.  Improving the predictive power when modelling physical effects of human interventions in estuarine systems , 2013 .

[27]  J. Hansen,et al.  Tidally influenced alongshore circulation at an inlet-adjacent shoreline , 2013 .

[28]  R. Tomlinson,et al.  Field Measurement for Investigating the Dynamics of Currumbin Creek Tidal Inlet Entrance , 2013 .

[29]  G. Dodet,et al.  Seasonal to Decadal Variability of Longshore Sand Transport at the Northwest Coast of Portugal , 2012 .

[30]  Kristen D. Splinter,et al.  Climate controls on longshore sediment transport , 2012 .

[31]  Fadi Chaaban,et al.  Using ArcGIS® Modelbuilder and Aerial Photographs to Measure Coastline Retreat and Advance: North of France , 2012 .

[32]  T. Beck,et al.  Tidal Inlet Morphology Classification and Empirical Determination of Seaward and Down-Drift Extents of Tidal Inlets , 2012 .

[33]  Marcel J. F. Stive,et al.  Morphodynamic upscaling with the MORFAC approach: Dependencies and sensitivities , 2011 .

[34]  R. Nicholls,et al.  Estuary schematisation in behaviour-oriented modelling , 2011 .

[35]  D. Roelvink,et al.  Morphodynamic upscaling with the MORFAC approach , 2011 .

[36]  Lao Juan,et al.  Development and Validation of a Scale for Measuring Instructors' Attitudes toward Concept-Based or Reform-Oriented Teaching of Introductory Statistics in the Health and Behavioral Sciences , 2010, 1007.3219.

[37]  David H. Schoellhamer,et al.  Hindcasting of decadal-timescale estuarine bathymetric change with a tidal-timescale model , 2009 .

[38]  D. A. Barry,et al.  Modeling sediment transport in the swash zone: A review , 2009 .

[39]  X. Bertin,et al.  A modeling-based analysis of processes driving wave-dominated inlets , 2009 .

[40]  J. Wolf,et al.  Morphological evolution of the Dee Estuary, Eastern Irish Sea, UK: A tidal asymmetry approach , 2009 .

[41]  J. Roelvink,et al.  Long-term process-based morphological modeling of the Marsdiep Tidal Basin , 2008 .

[42]  W. Lick.  Modeling Sediment Transport , 2008 .

[43]  M. van der Wegen,et al.  Long‐term morphodynamic evolution of a tidal embayment using a two‐dimensional, process‐based model , 2008 .

[44]  M. Davidson,et al.  Towards medium-term (order of months) morphodynamic modelling of the Teign estuary, UK , 2006 .

[45]  J. A. Roelvink,et al.  Coastal morphodynamic evolution techniques , 2006 .

[46]  G. Stelling,et al.  Development and validation of a three-dimensional morphological model , 2004 .

[47]  H. Bonekamp,et al.  Tidal Inlet Dynamics in Response to Human Intervention , 2003 .

[48]  Huixin Chen,et al.  Wave Chronology Effects on Long-Term Shoreline Erosion Predictions , 2001 .

[49]  A. Hibma.  Process-based modelling of tidal inlet dynamics - Evaluation of Frisian Inlet data , 1999 .

[50]  H. N. Southgate,et al.  The effects of wave chronology on medium and long term coastal morphology , 1995 .

[51]  B. Latteux,et al.  Techniques for long-term morphological simulation under tidal action , 1995 .

[52]  A. Bennett,et al.  TOPEX/POSEIDON tides estimated using a global inverse model , 1994 .

[53]  B. Latteux,et al.  Approaches to long-term modelling of coastal morphology : A review , 1993 .

[54]  Kristen D. Splinter,et al.  A relationship to describe the cumulative impact of storm clusters on beach erosion , 2014 .

[55]  R. Tomlinson,et al.  Dynamics of a wave-dominated tidal inlet and influence on adjacent beaches, Currumbin Creek, Gold Coast, Australia , 2007 .

[56]  Ian L. Turner,et al.  Coastal Imaging Applications and Research in Australia , 2006 .