From Terrestrial Ecosystem Research Network
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Enhanced Bare Earth Covariates for Soil and Lithological Modelling

Created 25/06/2025

Updated 25/06/2025

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This dataset consists of bare earth covariates designed to indicate the presence of iron oxides, ferrous minerals, quartz/carbonate and hydroxyl minerals, to support soil and lithological modelling across Australia. Bare earth layers (bands) represent the weighted geometric median of pixel values derived from a 30 year time-series of Landsat 5, 7 and 8 imagery converted to at-surface-reflectance, using the latest techniques to reduce the influence of vegetation (see Publications: Roberts, Wilford & Ghattas 2019). Bare earth layers are (BLUE (0.452 - 0.512), GREEN (0.533 - 0.590), RED, (0.636 - 0.673) NIR (0.851 - 0.879), SWIR1 (1.566 - 1.651) and SWIR2 (2.107 - 2.294) wavelength regions. Covariates are then derived from principal components analysis and ratios of specific bare earth layers to target identification of elements of surface geochemistry. Layers are available as mosaics or tiles in 30 or 90 metre resolution.

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Additional Info

Field Value
Title Enhanced Bare Earth Covariates for Soil and Lithological Modelling
Language eng
Licence Not Specified
Landing Page https://data.gov.au/data/dataset/4148c2b6-3eca-4c69-87c4-142cb36e2e09
Contact Point
Terrestrial Ecosystem Research Network�s Data Discovery
john.wilford@ga.gov.au
Reference Period 16/03/1983 - 30/06/2018
Geospatial Coverage
Map data © OpenStreetMap contributors
{
  "coordinates": [
    [
      [
        111.128906,
        -43.682174
      ],
      [
        157.447265,
        -43.682174
      ],
      [
        157.447265,
        -9.154163
      ],
      [
        111.128906,
        -9.154163
      ],
      [
        111.128906,
        -43.682174
      ]
    ]
  ],
  "type": "Polygon"
}
Data Portal Terrestrial Ecosystem Research Network

Data Source

This dataset was originally found on Terrestrial Ecosystem Research Network "Enhanced Bare Earth Covariates for Soil and Lithological Modelling". Please visit the source to access the original metadata of the dataset:
https://geonetwork.tern.org.au/geonetwork/srv/eng/csw/dataset/enhanced-bare-earth-covariates-for-soil-and-lithological-modelling