SAGA.ta_hydrology.15: SAGA Wetness Index

The 'SAGA Wetness Index' is, as the name says, similar to the 'Topographic Wetness Index' (TWI), but it is based on a modified catchment area calculation ('Modified Catchment Area'), which does not think of the flow as very thin film. As result it predicts for cells situated in valley floors with a small vertical distance to a channel a more realistic, higher potential soil moisture compared to the standard TWI calculation.

Inputs

√Čl√©vation

format
href
Please set a value for DEM.

Weights

format
href
Please set a value for WEIGHT.

the lower this value is the stronger is the suction effect

number

Type of Area

string

Type of Slope

string

Minimum Slope

number

Offset Slope

number

weighting factor for slope in index calculation

number

Outputs

Catchment Area

format
transmission

Catchment Slope

format
transmission

Modified Catchment Area

format
transmission

Topographic Wetness Index

format
transmission

Execution options

successUri
inProgressUri
failedUri

format

mode

Execute End Point

View the execution endpoint of a process.

View the alternative version in HTML.

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"http://zoo-project.org/dl/link.json"}, {"type": "object", "properties": {"type": {"enum": ["image/tiff", "application/x-ogc-envi", "application/x-ogc-aaigrid", "image/png"]}}}]}, {"type": "object", "required": ["value"], "properties": {"value": {"oneOf": [{"type": "string", "contentEncoding": "base64", "contentMediaType": "image/tiff"}, {"type": "string", "contentEncoding": "base64", "contentMediaType": "application/x-ogc-envi"}, {"type": "string", "contentEncoding": "base64", "contentMediaType": "application/x-ogc-aaigrid"}, {"type": "string", "contentEncoding": "base64", "contentMediaType": "image/png"}]}}}], "nullable": true}, "schema": {"oneOf": [{"type": "string", "contentEncoding": "base64", "contentMediaType": "image/tiff"}, {"type": "string", "contentEncoding": "base64", "contentMediaType": "application/x-ogc-envi"}, {"type": "string", "contentEncoding": "base64", "contentMediaType": "application/x-ogc-aaigrid"}, {"type": "string", "contentEncoding": "base64", "contentMediaType": "image/png"}]}, "id": "WEIGHT"}, "SUCTION": {"title": "Suction", "description": "the lower this value is the stronger is the suction effect", "schema": {"type": "number", "default": 10, "format": "double", "nullable": true}, "id": "SUCTION"}, "AREA_TYPE": {"title": "Type of Area", "description": "Type of Area", "schema": {"type": "string", "default": "square root of catchment area", "enum": ["total catchment area", "square root of catchment area", "specific catchment area"], "nullable": true}, "id": "AREA_TYPE"}, "SLOPE_TYPE": {"title": "Type of Slope", "description": "Type of Slope", "schema": {"type": "string", "default": "catchment slope", "enum": ["local slope", "catchment slope"], "nullable": true}, "id": "SLOPE_TYPE"}, "SLOPE_MIN": {"title": "Minimum Slope", "description": "Minimum Slope", "schema": {"type": "number", "default": 0, "format": "double", "nullable": true}, "id": "SLOPE_MIN"}, "SLOPE_OFF": {"title": "Offset Slope", "description": "Offset Slope", "schema": {"type": "number", "default": 0.1, "format": "double", "nullable": true}, "id": "SLOPE_OFF"}, "SLOPE_WEIGHT": {"title": "Slope Weighting", "description": "weighting factor for slope in index calculation", "schema": {"type": "number", "default": 1, "format": "double", "nullable": true}, "id": "SLOPE_WEIGHT"}}, "outputs": {"AREA": {"title": "Catchment Area", "description": "Catchment Area", "extended-schema": {"oneOf": [{"allOf": [{"$ref": "http://zoo-project.org/dl/link.json"}, {"type": "object", "properties": {"type": {"enum": ["image/tiff", "application/x-ogc-envi", "application/x-ogc-aaigrid", "image/png"]}}}]}, {"type": "object", "required": ["value"], "properties": {"value": {"oneOf": [{"type": "string", "contentEncoding": "base64", "contentMediaType": "image/tiff"}, {"type": "string", "contentEncoding": "base64", "contentMediaType": "application/x-ogc-envi"}, {"type": "string", "contentEncoding": "base64", "contentMediaType": "application/x-ogc-aaigrid"}, {"type": 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http://demo.mapmint.com/ogc-apihttp://localhost/ogc-api/processes/SAGA.ta_hydrology.15.html
Last modified: Sat Feb 19 15:43:34 CET 2022