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Velocity Database for Basins of the Great Australian Bight

Created 16/10/2025

Updated 16/10/2025

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The seismic stacking-velocity data in the Great Australian Bight are a useful dataset for calculating depths and sediment thicknesses on a regional scale. This work compares these data with P-wave velocities from sonobuoys and sonic logs from wells, and on this basis, a depth over-estimate of at least 15% can be expected from the depths derived from stacking velocities. Megasequence boundary depths are calculated for the Ceduna Terrace to further illustrate data quality. The database makes available the unfiltered stacking velocities using conventional and horizon-consistent formats.

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Additional Info

Field Value
Title Velocity Database for Basins of the Great Australian Bight
Language eng
Licence Not Specified
Landing Page https://data.gov.au/data/dataset/a41070bd-ba4d-482c-8820-191b7b051cba
Contact Point
Geoscience Australia Data
clientservices@ga.gov.au
Reference Period 22/04/2018
Geospatial Coverage
Map data © OpenStreetMap contributors
{
  "coordinates": [
    [
      [
        124.0,
        -38.0
      ],
      [
        140.0,
        -38.0
      ],
      [
        140.0,
        -31.0
      ],
      [
        124.0,
        -31.0
      ],
      [
        124.0,
        -38.0
      ]
    ]
  ],
  "type": "Polygon"
}
Data Portal Geoscience Australia

Data Source

This dataset was originally found on Geoscience Australia "Velocity Database for Basins of the Great Australian Bight". Please visit the source to access the original metadata of the dataset:
https://ecat.ga.gov.au/geonetwork/srv/eng/csw/dataset/velocity-database-for-basins-of-the-great-australian-bight