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GEOMACS (Geological and Oceanographic Model of Australias Continental Shelf) Interquartile range

Created 25/06/2025

Updated 25/06/2025

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Geoscience Australias GEOMACS model was utilised to produce hindcast hourly time series of continental shelf (~20 to 300 m depth) bed shear stress (unit of measure: Pascal, Pa) on a 0.1 degree grid covering the period March 1997 to February 2008 (inclusive). The hindcast data represents the combined contribution to the bed shear stress by waves, tides, wind and density-driven circulation. Included in the parameters that will be calculated to represent the magnitude of the bulk of the data are the quartiles of the distribution; Q25, Q50 and Q75 (i.e. the values for which 25, 50 and 75 percent of the observations fall below). The interquartile range, , of the GEOMACS output takes the observations from between Q25 and Q75 to provide an accurate representation of the spread of observations. The interquartile range was shown to provide a more robust representation of the observations than the standard deviation, which produced highly skewed observations (Hughes and Harris 2008). This dataset is a contribution to the CERF Marine Biodiversity Hub and is hosted temporarily by CMAR on behalf of Geoscience Australia.

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Additional Info

Field Value
Title GEOMACS (Geological and Oceanographic Model of Australias Continental Shelf) Interquartile range
Language eng
Licence Not Specified
Landing Page https://data.gov.au/data/dataset/29dc64ff-6ce8-469b-b0e1-501e73318473
Contact Point
CSIRO Marlin Data Catalogue
marine@ga.gov.au
Reference Period 24/07/2008
Geospatial Coverage
Map data © OpenStreetMap contributors
{
  "coordinates": [
    [
      [
        110.0,
        -44.0
      ],
      [
        156.0,
        -44.0
      ],
      [
        156.0,
        -7.0
      ],
      [
        110.0,
        -7.0
      ],
      [
        110.0,
        -44.0
      ]
    ]
  ],
  "type": "Polygon"
}
Data Portal CSIRO Marlin

Data Source

This dataset was originally found on CSIRO Marlin "GEOMACS (Geological and Oceanographic Model of Australias Continental Shelf) Interquartile range". Please visit the source to access the original metadata of the dataset:
https://marlin.csiro.au/geonetwork/srv/eng/csw/dataset/geomacs-geological-and-oceanographic-model-of-australias-continental-shelf-interquartile-range1