Model:DetachmentLtdErosion

DetachmentLtdErosion

Also known as
Model type	Single
Model part of larger framework	LandLab
Note on status model
Date note status model

Incorporated models or components:

Spatial dimensions	2D
Spatial extent	Landscape-Scale, Regional-Scale, Watershed-Scale
Model domain	Terrestrial
One-line model description	Simulate detachment limited sediment transport.
Extended model description	Landlab component that simulates detachment limited sediment transport is more general than the stream power component. Doesn't require the upstream node order, links to flow receiver and flow receiver fields. Instead, takes in the discharge values on NODES calculated by the OverlandFlow class and erodes the landscape in response to the output discharge. As of right now, this component relies on the OverlandFlow component for stability. There are no stability criteria implemented in this class. To ensure model stability, use StreamPowerEroder or FastscapeEroder components instead.

Keywords:	erosion, detachment limited,

Supported platforms	Unix, Linux, Mac OS, Windows
Other platform
Programming language	Python
Other program language
Code optimized	Single Processor
Multiple processors implemented
Nr of distributed processors
Nr of shared processors
Start year development	2016
Does model development still take place?	No
If above answer is no, provide end year model development	2020
Code development status	As is, no updates are provided
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/landlab/landlab/tree/master/landlab
Source csdms web address
Program license type	BSD or MIT X11
Program license type other
Memory requirements
Typical run time

Describe input parameters	grid : RasterModelGrid A landlab grid. K_sp : float, optional K in the stream power equation (units vary with other parameters - if used with the de Almeida equation it is paramount to make sure the time component is set to seconds, not years!) m_sp : float, optional Stream power exponent, power on discharge n_sp : float, optional Stream power exponent, power on slope uplift_rate : float, optional changes in topographic elevation due to tectonic uplift entrainment_threshold : float, optional threshold for sediment movement slope : str Field name of an at-node field that contains the slope.
Input format	ASCII
Other input format
Describe output parameters	_info = { "surface_water__discharge": { "dtype": float, "intent": "in", "optional": False, "units": "m**3/s", "mapping": "node", "doc": "Volumetric discharge of surface water", }, "topographic__elevation": { "dtype": float, "intent": "inout", "optional": False, "units": "m", "mapping": "node", "doc": "Land surface topographic elevation", }, "topographic__slope": { "dtype": float, "intent": "in", "optional": True, "units": "-", "mapping": "node", "doc": "gradient of the ground surface", }, }
Output format	ASCII
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://landlab.github.io
Model forum / discussion board	https://github.com/landlab/landlab/issues

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