DEM-S: Australian Smoothed Digital Elevation Model

Dataset Availability

2010-02-01T00:00:00Z–2010-02-01T00:00:00Z

Dataset Provider

Geoscience Australia

Earth Engine Snippet

ee.Image("AU/GA/DEM_1SEC/v10/DEM-S")

Tags

australia dem elevation ga geophysical geoscience-australia smoothed 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
30.92 meters

Bands

Name	Units	Min	Max	Description
elevation	m	-73.31*	2224.32*	Elevation

* estimated min or max value

Terms of Use

Terms of Use

CC-BY-4.0

Citations

Citations:

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

Explore with Earth Engine

Important: Earth Engine is a platform for petabyte-scale scientific analysis and visualization of geospatial datasets, both for public benefit and for business and government users. Earth Engine is free to use for research, education, and nonprofit use. To get started, please register for Earth Engine access.

Code Editor (JavaScript)

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');

Open in Code Editor

DEM-S: Australian Smoothed Digital Elevation Model

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 …

AU/GA/DEM_1SEC/v10/DEM-S, australia,dem,elevation,ga,geophysical,geoscience-australia,smoothed,srtm

2010-02-01T00:00:00Z/2010-02-01T00:00:00Z

-44.06 112.99 -9.99 154.0

Google Earth Engine

https://developers.google.com/earth-engine/datasets