This module calculates the vertical distance to a channel network base level. The algorithm consists of two major steps:
1. Interpolation of a channel network base level elevation
2. Subtraction of this base level from the original elevations
| Name | Type | Identifier | Description | Constraints |
Input | Elevation | Grid (input) | ELEVATION | A grid that contains elevation data. | - |
Channel Network | Grid (input) | CHANNELS | A grid providing information about the channel network. It is assumed that no-data cells are not part of the channel network. Vice versa all others cells are recognised as channel network members. | - |
Output | Vertical Distance to Channel Network | Grid (output) | DISTANCE | The resulting grid gives the altitude above the channel network in the same units as the elevation data. | - |
Channel Network Base Level (*) | Grid (optional output) | BASELEVEL | This optional grid output contains the interpolated channel network base level elevations. | - |
Options | Tension Threshold [Percentage of Cell Size] | Floating point | THRESHOLD | - | Minimum: 0.000000 Default: 1.000000 |
Keep Base Level below Surface | Boolean | NOUNDERGROUND | - | Default: 1 |
(*) optional |