GA Multi-scale Topographic Position

Geoscience Australia Multi-scale Topographic Position Image of Australia

Product type:: Raster
Time span:: 2018 — 2018
Product ID:: multi_scale_topographic_position
Produced by:: Geoscience Australia

External data

This data product is produced by an external party and is not a DEA product. DEA provides this data without modifications except where needed to make it compatible with our systems.

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Overview

About

A Multi-scale topographic position image of Australia has been generated by combining a topographic position index and topographic ruggedness. Topographic Position Index (TPI) measures the topographic slope position of landforms. Ruggedness informs on the roughness of the surface and is calculated as the standard deviation of elevations. The derived ternary image captures variations in topographic position across these spatial scales (blue local, green intermediate and red regional) and gives a rich representation of nested landform features that have broad application in understanding geomorphological and hydrological processes and in mapping regolith and soils over the Australian continent.

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Key details

Persistent ID	123119
Licence	Creative Commons Attribution 4.0 International Licence

Cite this product

Data citation

Wilford, J., Sudipta, B., Lindsay, J. 2019. Multi-scale Topographic Position Image of Australia. Geoscience Australia, Canberra.

Paper citation

Lindsay, J, B., Cockburn, J.M.H. and Russell, H.A.J. 2015. An integral image approach to performing multi-scale topographic position analysis, Geomorphology 245, 51-61.

Specifications

Bands

Bands are distinct layers of data within a product that can be loaded using the Open Data Cube (on the DEA Sandbox or NCI) or DEA’s STAC API.

	Aliases	Resolution	CRS	Units	Type	Description
local	None	0.000833 degrees	EPSG:4326	None	int16	Local spatial scale (0.2-8.1 km)
intermediate	None	0.000833 degrees	EPSG:4326	None	int16	Intermediate spatial scale (8.2-65.2 km)
regional	None	0.000833 degrees	EPSG:4326	None	int16	Regional spatial scale (65.6-147.6 km)

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