Slope Area Combination
(c) 2010 by David G. Tarboton
Creates a grid of slope-area values = (Sm)
(An) based on slope and specific catchment area grid inputs,
and parameters m and n. This tool is intended for use
as part of the slope-area stream raster delineation method.
Parameters
- Number of Processes
Integer
- The number of stripes that the domain will be divided into and the
number of MPI parallel processes that will be spawned to evaluate each
of the stripes.
- Slope Grid
Raster Grid
- This input is a grid of slope values. This grid can be obtained
from the "D-Infinity Flow Directions" tool.
- Area Grid
Raster Grid
- A grid giving the specific catchment area for each cell taken as
its own contribution (grid cell length or summation of weights) plus
the proportional contribution from upslope neighbors that drain in to
it. This grid is typically obtained from the "D-Infinity Contributing
Area" tool.
- Slope Exponent
Double
- The slope exponent (m) parameter which will be used in
the formula: (Sm)(An), that is used
to create the slope-area grid. Default value 2.
- Area Exponent
Double
- The area exponent (n) parameter which will be used in
the formula: (Sm)(An), that is used to
create the slope-area grid. Default is 1.
Outputs
- Slope Area Grid
Raster Grid
- A grid of slope-area values = (Sm)(An)
calculated from the slope grid, specific catchment area grid, m
slope exponent parameter, and n area exponent parameter.