Model:DepthDependentTaylorDiffuser: Difference between revisions

Revision as of 14:29, 21 January 2020

DepthDependentTaylorDiffuser

Metadata

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	Patch-Scale, Reach-Scale, Watershed-Scale
Model domain	Terrestrial
One-line model description	This component implements a depth-dependent Taylor series diffusion rule, combining concepts of Ganti et al. (2012) and Johnstone and Hilley (2014).
Extended model description	Hillslope sediment flux uses a Taylor Series expansion of the Andrews-Bucknam formulation of nonlinear hillslope flux derived following following Ganti et al., 2012 with a depth dependent component inspired Johnstone and Hilley (2014). The flux :math:`q_s` is given as: q_s = DSH^* ( 1 + (S/S_c)^2 + (S/Sc_)^4 + .. + (S/S_c)^2(n-1) ) (1.0 - exp( H / H^) where :math:`D` is is the diffusivity, :math:`S` is the slope, :math:`S_c` is the critical slope, :math:`n` is the number of terms, :math:`H` is the soil depth on links, and :math:`H^` is the soil transport decay depth. The default behavior uses two terms to produce a slope dependence as described by Equation 6 of Ganti et al., (2012).This component will ignore soil thickness located at non-core nodes.

Keywords:	soil creep, hillslope, diffusion,

Name	Rachel Glade
Type of contact	Model developer
Institute / Organization
Postal address 1
Postal address 2
Town / City	Los Alamos
Postal code	87544
State
Country	United States
Email address	rachel.glade@colorado.edu
Phone
Fax

Name	Katy Barnhart
Type of contact	Technical contact
Institute / Organization
Postal address 1
Postal address 2
Town / City
Postal code
State
Country	United States
Email address
Phone
Fax

Name	Greg Tucker
Type of contact	Project manager
Institute / Organization
Postal address 1
Postal address 2
Town / City
Postal code
State
Country	United States
Email address
Phone
Fax

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	2019
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/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: ModelGrid Landlab ModelGrid object linear_diffusivity: float, optional. Hillslope diffusivity, m**2/yr Default = 1.0 slope_crit: float, optional Critical gradient parameter, m/m Default = 1.0 soil_transport_decay_depth: float, optional characteristic transport soil depth, m Default = 1.0 nterms: int, optional. default = 2 number of terms in the Taylor expansion. Two terms (default) gives the behavior described in Ganti et al. (2012).
Input format	ASCII
Other input format
Describe output parameters	_info = { "bedrock__elevation": { "dtype": float, "intent": "out", "optional": False, "units": "m", "mapping": "node", "doc": "elevation of the bedrock surface", }, "soil__depth": { "dtype": float, "intent": "inout", "optional": False, "units": "m", "mapping": "node", "doc": "Depth of soil or weathered bedrock", }, "soil__flux": { "dtype": float, "intent": "out", "optional": False, "units": "m^2/yr", "mapping": "link", "doc": "flux of soil in direction of link", }, "soil_production__rate": { "dtype": float, "intent": "in", "optional": False, "units": "m/yr", "mapping": "node", "doc": "rate of soil production at nodes", }, "topographic__elevation": { "dtype": float, "intent": "inout", "optional": False, "units": "m", "mapping": "node", "doc": "Land surface topographic elevation", }, "topographic__slope": { "dtype": float, "intent": "out", "optional": False, "units": "m/m", "mapping": "link", "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

Comments

This part will be filled out by CSDMS staff

OpenMI compliant
BMI compliant
WMT component
PyMT component
Is this a data component

Can be coupled with:

Model info

Authors

Rachel Glade

Barnhart, Tucker

Source code

Go to external source code site

Model citations

Nr. of publications:	1
Total citations:	178
h-index:	1
m-quotient:	0.11

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Introduction

History

References

Nr. of publications:	1
Total citations:	178
h-index:	1
m-quotient:	0.11

Featured publication(s)	Year	Model described	Type of Reference	Citations
Hobley, Daniel E. J.; Adams, Jordan M.; Nudurupati, Sai Siddhartha; Hutton, Eric W. H.; Gasparini, Nicole M.; Istanbulluoglu, Erkan; Tucker, Gregory E.; 2017. Creative computing with Landlab: an open-source toolkit for building, coupling, and exploring two-dimensional numerical models of Earth-surface dynamics. Earth Surface Dynamics, 5, 21–46. 10.5194/esurf-5-21-2017 (View/edit entry)	2017	ChannelProfiler DepthDependentTaylorDiffuser Landlab LinearDiffuser	Model overview	178
See more publications of DepthDependentTaylorDiffuser

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Input Files

Output Files

@@ Line 9: / Line 9: @@
 |Spatial dimensions=2D
 |Spatialscale=Patch-Scale, Reach-Scale, Watershed-Scale
-|One-line model description=This component implements a depth-dependent Taylor series diffusion rule,
+|One-line model description=This component implements a depth-dependent Taylor series diffusion rule, combining concepts of Ganti et al. (2012) and Johnstone and Hilley (2014).
-    combining concepts of Ganti et al. (2012) and Johnstone and Hilley (2014).
 |Extended model description=Hillslope sediment flux uses a Taylor Series expansion of the Andrews-Bucknam formulation of nonlinear hillslope flux derived following following Ganti et al., 2012 with a depth dependent component inspired Johnstone and Hilley (2014). The flux :math:`q_s` is given as:
 q_s = DSH^* ( 1 + (S/S_c)^2 + (S/Sc_)^4 + .. + (S/S_c)^2(n-1) ) (1.0 - exp( H / H^*)