Model:Cross Shore Sediment Flux

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Cross Shore Sediment Flux

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Summary Contact Technical specs In/Output Process Testing Other Component info Also known as Model type Single Model part of larger framework Note on status model Date note status model Incorporated models or components: Spatial dimensions 1D Spatial extent Landscape-Scale Model domain Coastal One-line model description Cross-Shore Sediment Flux Equations Extended model description The Cross-Shore Sediment Flux model addresses predominately sandy, wave-dominated coastlines on time-scales ranging from years to millenia and on spatial scales ranging from kilometers to tens of kilometers using a range of wave parameters as inputs. It calculates the cross-shore sediment flux using both shallow water wave assumptions and full Linear Airy wave Theory. An equilibrium profile is also created. Using the Exner equation, we develop an advection diffusion equation that describes the evolution of profile through time. A morphodynamic depth of closure can be estimated for each input wave parameter. Keywords: coastal sediment transport, coastal evolution, Name Alejandra Ortiz Type of contact Model developer Institute / Organization Woods Hole Oceanographic Institution Postal address 1 Postal address 2 Town / City Woods Hole Postal code 02543 State Massachusetts Country United States Email address aortiz@whoi.edu Phone Fax Supported platforms Linux, Mac OS, Windows Other platform Programming language Matlab Other program language Code optimized Single Processor Multiple processors implemented Nr of distributed processors Nr of shared processors Start year development Does model development still take place? No If above answer is no, provide end year model development Code development status When did you indicate the 'code development status'? Model availability As code Source code availability (Or provide future intension) Through CSDMS repository Source web address Source csdms web address https://github.com/csdms-contrib/Cross_Shore_Sediment_Flux Program license type GPL v2 Program license type other Memory requirements Typical run time Describe input parameters You can vary the initial slope, wave periods, wave heights, and sediment fall velocity (a proxy for sediment size). Input format Other input format Describe output parameters It outputs all the variables used in the advection-diffusion equation describing bed evolution for both shallow water wave assumptions (all labeled as *_s) and linear theory (labeled as *_lh). Output format Other output format Pre-processing software needed? No Describe pre-processing software Post-processing software needed? No Describe post-processing software Visualization software needed? No If above answer is yes Other visualization software Describe processes represented by the model Using energetics-based formulations for wave-driven sediment transport, we develop a robust methodology for estimating the morphodynamic evolution of a cross-shore sandy coastal profile. The wave-driven cross-shore sediment flux depends on three components: two onshore-directed terms (wave asymmetry and wave streaming) and an offshore-directed slope term. The cross-shore sediment transport formulation defines a dynamic equilibrium profile and, by perturbing about this steady-state profile, we present an advection-diffusion formula for profile evolution. Morphodynamic Péclet analysis suggests that the shoreface is diffusionally dominated. Using this depth-dependent characteristic diffusivity timescale, we distinguish a morphodynamic depth of closure for a given time envelope. Even though wave-driven sediment transport can (and will) occur at deeper depths, the rate of morphologic bed changes in response to shoreline change becomes increasingly slow below this morphodynamic closure depth. Describe key physical parameters and equations Describe length scale and resolution constraints Describe time scale and resolution constraints Describe any numerical limitations and issues Describe available calibration data sets Upload calibration data sets if available: Describe available test data sets Upload test data sets if available: Describe ideal data for testing Do you have current or future plans for collaborating with other researchers? Is there a manual available? No Upload manual if available: Model website if any Model forum / discussion board Comments This part will be filled out by CSDMS staff OpenMI compliant No but possible BMI compliant No but possible WMT component No but possible PyMT component Is this a data component Can be coupled with:

Model info Authors Alejandra Ortiz Source code View in CSDMS GitHub repository Model citations Nr. of publications: 1 Total citations: 60 h-index: 1 m-quotient: 0.11 QR-code Link to this page Other models by author Cross Shore Sediment Flux

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Featured publication(s)	Year	Model described	Type of Reference	Citations
Ortiz, Alejandra C.; Ashton, Andrew D.; 2016. Exploring shoreface dynamics and a mechanistic explanation for a morphodynamic depth of closure: Morphodynamic Depth of Closure. Journal of Geophysical Research: Earth Surface, 121, 442–464. 10.1002/2015JF003699 (View/edit entry)	2016	Cross Shore Sediment Flux	Model overview	60
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