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Shear Wave Velocity measurement at Australian Ground Motion Seismometer Sites by the Spectral Analysis of Surface Waves (SASW) Method

Created 16/10/2025

Updated 16/10/2025

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Near-surface shear-wave velocity profiles were acquired at eighteen permanent and temporary seismograph sites in Western Australia, South Australia, Victoria and New South Wales. These data were obtained to support ground-motion modelling in Australia by characterising the near-surface response at sites used to record ground-motion from Australian earthquakes. Geoscience Australia contracted the US Geological Survey to obtain shear-velocity data using the Spectral Analysis of Shear-Waves (SASW) technique. Velocity profiles were calculated down to maximum depths between 100-200m. Apart from two sites on alluvium, all sites were located on hard rock at or near the surface. The average velocity to 30m depth (Vs30) ranges from 257 m/s for alluvial sites to 1652 m/s for Proterozoic metasediments.

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Field Value
Title Shear Wave Velocity measurement at Australian Ground Motion Seismometer Sites by the Spectral Analysis of Surface Waves (SASW) Method
Language eng
Licence Not Specified
Landing Page https://data.gov.au/data/dataset/ea57a0f0-02e5-4c7e-b35d-da3390a9c9fe
Contact Point
Geoscience Australia Data
clientservices@ga.gov.au
Reference Period 20/04/2018
Geospatial Coverage
Map data © OpenStreetMap contributors
{
  "coordinates": [
    [
      [
        110.0,
        -44.0
      ],
      [
        156.0,
        -44.0
      ],
      [
        156.0,
        -9.0
      ],
      [
        110.0,
        -9.0
      ],
      [
        110.0,
        -44.0
      ]
    ]
  ],
  "type": "Polygon"
}
Data Portal Geoscience Australia

Data Source

This dataset was originally found on Geoscience Australia "Shear Wave Velocity measurement at Australian Ground Motion Seismometer Sites by the Spectral Analysis of Surface Waves (SASW) Method". Please visit the source to access the original metadata of the dataset:
https://ecat.ga.gov.au/geonetwork/srv/eng/csw/dataset/shear-wave-velocity-measurement-at-australian-ground-motion-seismometer-sites-by-the-spectral-a