## TAUDEM - D-Infinity Distance Down

Calculates the distance downslope to a stream using the D-infinity flow model.

TAUDEMTERRAIN ANALYSISGRID ANALYSISD-INFINITY

#### Authorship

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UtahState University
:
david.tarboton@usu.edu
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Method-focused categoriesData-perspectiveGeoinformation analysis

#### Detailed Description

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Calculates the distance downslope to a stream using the D-infinity flow model. The D-infinity flow model is a multiple flow direction model, because the outflow from each grid cell is proportioned between up to 2 downslope grid cells. As such, the distance from any grid cell to a stream is not uniquely defined. Flow that originates at a particular grid cell may enter the stream at a number of different cells. The statistical method may be selected as the longest, shortest or weighted average of the flow path distance to the stream. Also one of several ways of measuring distance may be selected: the total straight line path (Pythagoras), the horizontal component of the straight line path, the vertical component of the straight line path, or the total surface flow path.

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David Tarboton (2020). TAUDEM - D-Infinity Distance Down, Model Item, OpenGMS, https://geomodeling.njnu.edu.cn/modelItem/915766f8-5642-4c0f-b7be-1ce00b6ba7cd

#### Authorship

:
UtahState University
:
david.tarboton@usu.edu
:
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Last modifier
XiaoYu He
Last modify time
2021-02-24
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