DEM-S: Australian Smoothed Digital Elevation Model

AU/GA/DEM_1SEC/v10/DEM-S
Dataset Availability
2010-02-01T00:00:00 - 2010-02-01T00:00:00
Dataset Provider
Earth Engine Snippet
ee.Image("AU/GA/DEM_1SEC/v10/DEM-S")
Tags
elevation australia dem geophysical smoothed geoscience-australia ga srtm

Description

The Smoothed Digital Elevation Model (DEM-S) was derived from the SRTM data acquired by NASA in February 2000. DEM-S represents ground surface topography (excluding vegetation features) and has been smoothed to reduce noise and improve the representation of surface shape. An adaptive process applied more smoothing in flatter areas than hilly areas, and more smoothing in noisier areas than in less noisy areas.

This DEM-S supports calculation of local terrain shape attributes such as slope, aspect, and curvature that could not be reliably derived from the unsmoothed 1 second DEM because of noise.

There are several areas with unexpected negative values: close to Canberra around (150.443044, -35.355281) with values of -55 and in Western Australia around (124.84, -16.44) with -43.

Bands

Resolution
1 arc second

Bands

Name Units Min Max Description
elevation Meters -73.31* 2224.32*

Elevation

* estimated min or max value

Terms of Use

Terms of Use

This dataset is made available by Geoscience Australia under the Creative Commons Attribution 4.0 International Licence.

Citations

Citations:
  • Geoscience Australia, 2015. Digital Elevation Model (DEM) of Australia derived from LiDAR 5 Metre Grid. Geoscience Australia, Canberra.

Explore in Earth Engine

var dataset = ee.Image('AU/GA/DEM_1SEC/v10/DEM-S');
var elevation = dataset.select('elevation');
var elevationVis = {
  min: -10.0,
  max: 1300.0,
  palette: [
    '3ae237', 'b5e22e', 'd6e21f', 'fff705', 'ffd611', 'ffb613', 'ff8b13',
    'ff6e08', 'ff500d', 'ff0000', 'de0101', 'c21301', '0602ff', '235cb1',
    '307ef3', '269db1', '30c8e2', '32d3ef', '3be285', '3ff38f', '86e26f'
  ],
};
Map.setCenter(133.95, -24.69, 5);
Map.addLayer(elevation, elevationVis, 'Elevation');

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