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AZHU8 Topographic Roughness Index


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Created: May 21, 2025 at 4:45 p.m.
Last updated: May 21, 2025 at 5:22 p.m.
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Sharing Status: Discoverable
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Abstract

The Topographic Roughness Index (TRI) of AZ HUC8 watersheds generated using a custom R script utilizing the package terra. TRI is defined as the square root of the summation of the difference between the eight neighboring cells and the center cell squared, in a DEM 3x3 focal neighborhood. Put simply, it is a unitless index of surface roughness which incorporates change in surface elevation in all directions, unlike slope which is unidirectional.

Subject Keywords

Coverage

Spatial

Coordinate System/Geographic Projection:
WGS 84 EPSG:4326
Coordinate Units:
Decimal degrees
North Latitude
37.8402°
East Longitude
-107.2784°
South Latitude
29.7875°
West Longitude
-115.7260°

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Related Resources

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Title Owners Sharing Status My Permission
ATUR Travis Zalesky  Discoverable &  Shareable Open Access

How to Cite

Zalesky, T. (2025). AZHU8 Topographic Roughness Index, HydroShare, http://www.hydroshare.org/resource/ab8602a7e24c4582be81bc7281bc99e6

This resource is shared under the Creative Commons Attribution CC BY.

http://creativecommons.org/licenses/by/4.0/
CC-BY

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