Model:SurfaceRoughness

From CSDMS



SurfaceRoughness


Metadata

Also known as
Model type Tool
Model part of larger framework
Incorporated models or components:
Spatial dimensions 2D
Spatial extent
Model domain Terrestrial
One-line model description Quantifies surface roughness with high-resolution topographic data by analyzing the local variability of surface normal vectors.
Extended model description This tool can be used to map out areas of hillslopes where the emergence of bedrock drives an increase in surface roughness. The tool requires an input DEM in float format and will output the rasters, also in float format, for three eigenvectors that together describe the distribution of normal vectors within a user-defined neighbourhood for each pixel.
Keywords:

Rock Exposure, Surface Roughness, LiDAR,


First name David
Last name Milodowski
Type of contact Model developer
Institute / Organization University of Edinburgh, School of GeoSciences
Postal address 1 Geography Building
Postal address 2 Drummond Street
Town / City Edinburgh
Postal code EH8 9XP
State
Country United Kingdom
Email address d.t.milodowski@ed.ac.uk
Phone
Fax


First name Simon
Last name Mudd
Type of contact Model developer
Institute / Organization University of Edinburgh, School of GeoSciences
Postal address 1 Geography Building
Postal address 2 Drummond Street
Town / City Edinburgh
Postal code EH8 9XP
State
Country United Kingdom
Email address simon.m.mudd@ed.ac.uk
Phone
Fax


Supported platforms Linux
Other platform
Programming language C++
Other program language
Code optimized Single Processor
Multiple processors implemented
Nr of distributed processors
Nr of shared processors
Start year development 2012
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 CSDMS repository
Source web address
Source csdms web address https://github.com/csdms-contrib/SurfaceRoughness
Program license type GPL v2
Program license type other
Memory requirements Memory requirements dependent on size of DEM
Typical run time 1-30 minutes


Describe input parameters The input file is a DEM in .flt format. A driver text file is also required which contains the parameters used for the extraction.
Input format
Other input format float
Describe output parameters
Output format
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 This tool maps out local surface roughness based on the neighborhood distribution of surface normal vectors. As sediment transport processes in soil mantled landscapes tend to be diffusive, the emergence of bedrock drives an increase in surface roughness that is mapped out by this algorithm.
Describe key physical parameters and equations The surface normal vector for a given pixel are defined by fitting a 6-term polynomial surface to a set of DEM points within a user-specified radius of that pixel. A second user-defined neighborhood is used to then map out the local variability in the orientation of the surface normal vectors.
Describe length scale and resolution constraints A requirement is high resolution topographic data, typically ~1m resolution. For a detailed discussion of lengthscale and resolution constraints we urge the user to refer to the original manuscript
Describe time scale and resolution constraints No time resolution constraints as this software performs topographic analysis.
Describe any numerical limitations and issues


Describe available calibration data sets
Upload calibration data sets if available:
Describe available test data sets Two test DEMs are included in the repository, alongside their respective driver files. These are used in the original manuscript.
Upload test data sets if available:
Describe ideal data for testing Any 1m resolution bare earth digital elevation model will do.


Do you have current or future plans for collaborating with other researchers? Yes
Is there a manual available? No
Upload manual if available:
Model website if any
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
Is this a data component
Can be coupled with:
Model info
Citation indices SurfaceRoughness
Nr. of pubs: 1
Citations: 23
h-index: 1
Qrcode SurfaceRoughness.png
Link to this page



Introduction

History

References




Citation indices SurfaceRoughness
Nr. of pubs: 1
Citations: 23
h-index: 1



Featured publication(s)YearModel describedType of ReferenceCitations
Milodowski, D. T.; Mudd, S. M.; Mitchard, E. T. A.; 2015. Topographic roughness as a signature of the emergence of bedrock in eroding landscapes. Earth Surface Dynamics, 3, 483–499. 10.5194/esurf-3-483-2015
(View/edit entry)
2015SurfaceRoughness
Model overview 23
See more publications of SurfaceRoughness


Issues

Help

Input Files

Output Files