Model:LEMming2

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LEMming2

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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 2D Spatial extent Landscape-Scale Model domain Terrestrial One-line model description 2D model that simulates the retreat of hard-capped cliffs Extended model description LEMming2 is a 2D, finite-difference landscape evolution model that simulates the retreat of hard-capped cliffs. It implements common unit-stream-power and linear/nonlinear-diffusion erosion equations on a 2D regular grid. Arbitrary stratigraphy may be defined. Cliff retreat is facilitated by a cellular algorithm, and rockfall debris is distributed and redistributed to the angle of repose. It is a standalone model written in Matlab with some C components. This repo contains the code used and described by Ward (2019) Lithosphere: "Dip, layer spacing, and incision rate controls on the formation of strike valleys, cuestas, and cliffbands in heterogeneous stratigraphy". Given the inputs in that paper it should generate the same results. Keywords: Name Dylan Ward Type of contact Model developer Institute / Organization University of Cincinnati Postal address 1 Dept. of Geology Postal address 2 Town / City Cincinnati Postal code 45221 State Ohio Country United States Email address dylan.ward@uc.edu Phone Fax Supported platforms Linux, Mac OS, Windows Other platform Programming language C, Matlab Other program language Code optimized Single Processor Multiple processors implemented Nr of distributed processors Nr of shared processors Start year development 2009 Does model development still take place? Yes If above answer is no, provide end year model development Code development status Active When did you indicate the 'code development status'? 2020 Model availability As code Source code availability (Or provide future intension) Through web repository Source web address https://github.com/ddoubleprime/LEMming2 Source csdms web address Program license type GPL v2 Program license type other Memory requirements Varies with grid size; 4+GB free recommended Typical run time Varies with grid size and length of run; minutes to days Describe input parameters Inputs include grid definitions, erosion rule parameters, uplift time series, stratigraphic geometry, and rock type and rockfall debris erodibility. Input format ASCII Other input format ASCII/Matlab input file acts as a namelist. Describe output parameters Outputs complete Matlab workspace at user-defined intervals. Outputs surface plots at user-defined intervals. Some scripts are included for additional visualization of output. Output format Binary 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 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 https://github.com/ddoubleprime/LEMming2 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 No but possible Is this a data component Can be coupled with:

Model info Authors Dylan Ward Source code Go to external source code site Model citations Nr. of publications: 1 Total citations: 13 h-index: 1 m-quotient: 0.17 QR-code Link to this page Other models by author LEMming LEMming2

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Nr. of publications:	1
Total citations:	13
h-index:	1
m-quotient:	0.17

Featured publication(s)	Year	Model described	Type of Reference	Citations
Ward, Dylan J.; 2019. Dip, layer spacing, and incision rate controls on the formation of strike valleys, cuestas, and cliffbands in heterogeneous stratigraphy. Lithosphere, 11, 697–707. 10.1130/L1056.1 (View/edit entry)	2019	LEMming2	Model application	13
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