Model:ESCAPE

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ESCAPE

This code has been community reviewed and published in the open access Journal of Open Source Software (JOSS)

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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 3D Spatial extent Global, Continental, Regional-Scale, Landscape-Scale Model domain Terrestrial, Hydrology, Marine, Climate One-line model description parallel global-scale landscape evolution model Extended model description eSCAPE is a parallel landscape evolution model, built to simulate Earth surface dynamics at global scale and over geological times. The model is primarily designed to address problems related to geomorphology, hydrology, and stratigraphy, but it can also be used in related fields. eSCAPE accounts for both hillslope processes (soil creep using linear diffusion) and fluvial incision (stream power law). It can be forced using spatially and temporally varying tectonics (vertical displacements) and climatic conditions (precipitation changes and/or sea-level fluctuations). Keywords: landscape evolution, geomorphology, marine sedimentation, erosion/deposition, parallel computing, Python, Name Tristan Salles Type of contact Model developer Institute / Organization School of Geosciences The University of Sydney Postal address 1 NSW Postal address 2 Town / City Sydney Postal code 2006 State Country Australia Email address tristan.salles@sydney.edu.au Phone Fax Supported platforms Linux, Mac OS, Windows Other platform Programming language Fortran90, Python Other program language Code optimized Single Processor, Multiple Processors Multiple processors implemented Distributed memory Nr of distributed processors Nr of shared processors Start year development 2018 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) Through web repository Source web address https://github.com/Geodels/eSCAPE Source csdms web address Program license type GPL v3 Program license type other Memory requirements Typical run time Describe input parameters Input files for eSCAPE are based on YAML syntax. domain: definition of the unstructured grid containing the vtk grid filename and the associated field (here called Z) as well as the flow direction method to be used flowdir that takes an integer value between 1 (for SFD) and 12 (for Dinf) and the boundary conditions (bc: ‘flat’, ‘fixed’ or ‘slope’) time: the simulation time parameters defined by start, end, tout (the output interval) and dt (the internal time-step). Follows the optional forcing conditions: sea: the sea-level declaration with the relative sea-level position (m) and the sea-level curve which is a file containing 2 columns (time and sea-level position). climatic & tectonic have the same structure with a sequence of events defined by a starting time (start) and either a constant value (uniform) or a map. Then the parameters for the surface processes to simulate: spl: for the stream power law with a unique parameter Ke representing the The erodibility coefficient which is scale-dependent and its value depend on lithology and mean precipitation rate, channel width, flood frequency, channel hydraulics. It is worth noting that the coefficient m and n are fixed in this version and take the value 0.5 & 1 respectively. diffusion: hillslope, stream and marine diffusion coefficients. hillslopeK sets the simple creep transport law which states that transport rate depends linearly on topographic gradient. River transported sediment trapped in inland depressions or internally draining basins are diffused using the coefficient (streamK). The marine sediment are transported based on a diffusion coefficient oceanK. The parameter maxIT specifies the maximum number of steps used for diffusing sediment during any given time interval dt. Finally, you will need to specify the output folder: output: with dir the directory name and the option makedir that gives the possible to delete any existing output folder with the same name (if set to False) or to create a new folder with the give dir name plus a number at the end (e.g. outputDir_1 if set to True) Input format ASCII, Binary Other input format csv and vtk files Describe output parameters Output are grids of 3D surface evolution in HDF5 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? Yes If above answer is yes Other visualization software You can visualise the output with Paraview or MayaVI Describe processes represented by the model The model computes flow accumulation using multiple flow direction over unstructured grids based on + an adaptation of the implicit approach proposed by Richardson & Perron (Richardson, Hill, & Perron, 2014). + an extension of the parallel priority-flood depression-filling algorithm from (Barnes, 2016) to unstructured mesh is used to simulate sedimentation in upland areas and internally drained basins. + marine sedimentation is based on a diffusion algorithm similar to the technique proposed in pybadlands (Salles, Ding, & Brocard, 2018). Describe key physical parameters and equations + hillslope processes soil creep law + landscape dynamic by the stream power law + marine deposition by diffusion Describe length scale and resolution constraints A set of four examples is provided (eSCAPE-demo - https://github.com/Geodels/eSCAPE-demo) and illustrates the different capabilities of the code from synthetic to regional, to continental and to global scale models. Describe time scale and resolution constraints The model is primarily intended to address problems at geological time-scales Describe any numerical limitations and issues Describe available calibration data sets To get some additional info in regards to how to use eSCAPE a series of examples and tutorials is provided in the docker container (Geodels escape-docker) and is also available for download from the eSCAPE-demo repository (https://github.com/Geodels/eSCAPE-demo). 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://escape-model.github.io Model forum / discussion board join the eSCAPE User Group on Slack by visiting https://escape-model.github.io/2018/09/contact/ 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 Tristan Salles Source code Go to external source code site DOI Download ESCAPE version: 1.0.1 Doi: 10.5281/zenodo.1419844 Model citations Nr. of publications: 3 Total citations: 16 h-index: 2 m-quotient: 0.29 QR-code Link to this page Other models by author Badlands ESCAPE Gospl

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Nr. of publications:	3
Total citations:	16
h-index:	2
m-quotient:	0.29

Publication(s)	Year	Type	Cited
. . , , . [[| (View/edit entry)]]		ESCAPE	Source code ref.	0
. . , , . [[| (View/edit entry)]]		ESCAPE	Model overview	Template:SEM 2948024398
. . , , . [[| (View/edit entry)]]		ESCAPE	Model overview	Template:SEM 2895985129