Burn Stream Network into DEM
- Author: O.Conrad (c) 2011
- Menu: Terrain Analysis | Preprocessing
Description
Burns a stream network into a Digital Elevation Model (DEM). Stream cells have to be coded with valid data values, all other cells should be set to no data value. First two methods decrease . The third method ensures a steady downstream gradient. An elevation decrease is only applied, if a downstream cell is equally high or higher. You should provide a grid with flow directions for determination of downstream cells. The 'Sink Drainage Route Detection' tool offers such flow directions.
Parameters
| | Name | Type | Identifier | Description | Constraints |
|---|
| Input | DEM | grid, input | DEM | - | - |
| Streams | grid, input | STREAM | - | - |
| Flow Direction | grid, input | FLOWDIR | - | - |
| Output | Processed DEM | grid, output, optional | BURN | - | - |
| Options | Grid System | grid system | PARAMETERS_GRID_SYSTEM | - | - |
| Method | choice | METHOD | - | Available Choices:
[0] simply decrease cell's value by epsilon
[1] lower cell's value to neighbours minimum value minus epsilon
[2] trace stream network downstream
Default: 0 |
| Epsilon | floating point number | EPSILON | - | Minimum: 0.000000
Default: 1.000000 |
Command Line
Usage: saga_cmd ta_preprocessor 6 [-DEM ] [-BURN ] [-STREAM ] [-FLOWDIR ] [-METHOD ] [-EPSILON ]
-DEM: DEM
grid, input
-BURN: Processed DEM
grid, output, optional
-STREAM: Streams
grid, input
-FLOWDIR: Flow Direction
grid, input
-METHOD: Method
choice
Available Choices:
[0] simply decrease cell's value by epsilon
[1] lower cell's value to neighbours minimum value minus epsilon
[2] trace stream network downstream
Default: 0
-EPSILON: Epsilon
floating point number
Minimum: 0.000000
Default: 1.000000