Model:CosmoLand

CosmoLand

Also known as
Model type	Single
Model part of larger framework

Incorporated models or components:

Spatial dimensions	2D
Spatial extent
Model domain	Terrestrial
One-line model description	2-D model tracking cosmogenic nuclides and mixing in landslide terrain
Extended model description	The model tracks both surface CRN concentration and concentration eroded off hillslopes into fluvial network in a simplified landscape undergoing both landslide erosion and more steady 'diffusive-like' erosion. Sediment mixing is allowed in the fluvial network. Code can be used to help successfully develop CRN sampling procedures in terrains where landslides are important.

Keywords:	landscape evolution, landslides, cosmogenic radionuclides,

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	2005
Does model development still take place?	No
If above answer is no, provide end year model development	2008
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/cosmoland
Program license type	Other
Program license type other	--
Memory requirements	<512MB
Typical run time	minutes to days

Describe input parameters	Input: Landslide: recurrence interval, size parameters Cosmogenic: production rate, decay rate, attenuation, density diffusive erosion rate drainage basin size, critical drainage area for a channel River channel scaling parameters: width, sediment depth, drainage density
Input format
Other input format	matlab .m file
Describe output parameters	Mass, atoms, landslide size, fluvial residence time, mixed mass and atoms fraction
Output format
Other output format	.mat file
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	Matlab
Other visualization software

Describe processes represented by the model	Tracking of cosmogenic nuclides on surface and in fluvial system of a landslide dominated drainage basin
Describe key physical parameters and equations	Cosmogenic nuclide production decay with depth. Power-law distribution of landslide size. Calculates a fluvial storage reservoir.
Describe length scale and resolution constraints	Drainage basin size controls the length of the model runs. Cell size should not be increased to shorten model runs.
Describe time scale and resolution constraints	Yearly timesteps. Most runs go for 500,000 yrs or more.
Describe any numerical limitations and issues	Matlab may max out memory if drainage basin is too large. Since this is a simplified landscape with wrap-around boundary conditions, one workaround is to do numerous smaller runs and add the output.

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	CRN data both hillslope and fluvial.

Do you have current or future plans for collaborating with other researchers?	Not currently.

Is there a manual available?	No
Upload manual if available:
Model website if any
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