TAUDEM - D8 Flow Direction

D8 Contributing Area is designed to count the number of grid cells draining through (out of) each grid cell.

TAUDEMTERRAIN ANALYSISGRID ANALYSISD8

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Contributor(s)

Initial contribute: 2020-12-16

Authorship

:  
UtahState University
:  
david.tarboton@usu.edu
:  
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Classification(s)

Method-focused categoriesData-perspectiveGeoinformation analysis

Detailed Description

English {{currentDetailLanguage}} English

Quoted From : https://hydrology.usu.edu/taudem/taudem5/help53/D8FlowDirections.html

    Creates 2 grids. The first contains the flow direction from each grid cell to one of its adjacent or diagonal neighbors, calculated using the direction of steepest descent. The second contain the slope, as evaluated in the direction of steepest descent, and is reported as drop/distance, i.e. tan of the angle. Flow direction is reported as "no data" for any grid cell adjacent to the edge of the DEM domain, or adjacent to a "no data" value in the DEM. In flat areas, flow directions are assigned away from higher ground and towards lower ground using the method of Garbrecht and Martz (1997). The D8 flow direction algorithm may be applied to a DEM that has not had its pits filled, but it will then result in "no data" values for flow direction and slope at the lowest point of each pit.

 

模型元数据

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David Tarboton (2020). TAUDEM - D8 Flow Direction, Model Item, OpenGMS, https://geomodeling.njnu.edu.cn/modelItem/1a969890-4759-4e23-aa1e-761394917cc4
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Contributor(s)

Initial contribute : 2020-12-16

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Authorship

:  
UtahState University
:  
david.tarboton@usu.edu
:  
View
Is authorship not correct? Feed back

History

Last modifier
XiaoYu He
Last modify time
2021-02-24
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