Model:CellularFanDelta

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CellularFanDelta

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Summary Contact Technical specs In/Output Process Testing Other Component info Also known as Model type Model part of larger framework Note on status model Date note status model Spatial dimensions 3D Spatial extent Model domain Coastal, Terrestrial One-line model description Coarse-grained delta dynamics and stratigraphy Extended model description 3D cellular model simulating delta evolution in coarse grained river dominated systems (e.g. a gravel fan delta). Keywords: delta evolution, stratigraphy, coarse grain, Name Matthew Wolinsky Type of contact Model developer Institute / Organization Postal address 1 Postal address 2 Town / City Matthew.Wolinsky@shell.com Postal code 77001 State Texas Country United States Email address Matthew.Wolinsky@shell.com Phone 713-245-8384 Fax Supported platforms Windows Other platform Programming language C++, Matlab Other program language (Programmed as C MEX files called from Matlab. Currently the two languages are intertwined, but could be modularized). Code optimized Multiple processors implemented Nr of distributed processors Nr of shared processors Start year development 2006 Does model development still take place? Yes 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) Source web address Source csdms web address Program license type GPL v2 Program license type other Memory requirements -- Typical run time hours to days Describe input parameters Domain dimensions and cell size (regular 2D grid). Initial condition. Locations and rates of sediment and water influxes. Subsidence pattern and rate. Sea level curve. (Presently all boundary conditions are constant, but could vary in space and time in future versions) Input format ASCII Other input format Runs from Matlab command line Describe output parameters Time series of 2D topography/bathymetry and water discharge. 3D stratigraphy grid (currently model is single grain-size, so stratigraphy only stores deposit age) Output format ASCII Other output format 2D grids can be ASCII, but stratigraphy is custom-designed structure stored in Matlab format. Pre-processing software needed? Yes Describe pre-processing software Post-processing and (pre-processing) is through Matlab scripts. Post-processing software needed? Yes Describe post-processing software Post-processing and (pre-processing) is through Matlab scripts. Visualization software needed? Yes If above answer is yes Matlab Other visualization software Describe processes represented by the model The key processes are 1) topographically-driven overland flow and 2) bedload transport by this flow. Through these processes the model self-organizes channels which incise, back-fill, and avulse. Processes are similar to alluvial fans. There are no marine processes besides bedload dumping. Describe key physical parameters and equations Topographic slope-weighted multiple flow direction water routing. Stream power transport. Describe length scale and resolution constraints There are two primary constraints: Like most topographically-routed cellular river models, incised channels in the model will always be one cell wide. Hence it should not be applied at scales where the cell size is much less than main channel widths. The model does not really simulate low-Froude low-slope rivers such as most large coastal deltas. However processes are similar to many other codes (e.g. DIONISOS) commonly used for large-scale deltas. If primary questions are about large-scale basin filling on O(10 ka) or longer timescales the model should be fine. However when questions relate to details of sub-millenial geomorphic processes or reservoir-scale stratigraphic architecture, some care must be taken in interpreting model results. Describe time scale and resolution constraints See above. Describe any numerical limitations and issues Numerical limitations and issues: Currently the model runs with a constant timestep, which is limited by the maximum inflow. Future versions may include adaptive time-stepping. As mentioned above, the model channels tend to be one or two cells wide. Future versions may address this issue with some combination of diffusive regularization or multi-scale modeling. 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 Coarse-grained delta experiments without too valley widening, e.g. many XES experiments conducted at the Saint Anthony Falls Laboratory by Paola et al. Do you have current or future plans for collaborating with other researchers? Possibly 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:

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