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Comparison of earthquake source spectra and attenuation in eastern North America and southeastern Australia

Created 16/10/2025

Updated 16/10/2025

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The paucity of ground-motion data in Stable Continental Regions (SCRs) remains a key limitation when developing relations that seek to predict effects of strong ground-shaking from large damaging earthquakes. It is desirable to combine data from more than one SCR in order to increase database size, but this raises questions as to whether the source and attenuation properties of the SCRs are equivalent. We merge recently - compiled spectralamplitude databases from small-to-moderate events (moment magnitudes 2.0< - 5.0<) in both southeastern Australia and eastern North America in order to compare the key characteristics of ground motion in these two regions. Both are SCRs, but are widely separated, spatially and in tectonic history.

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Additional Info

Field Value
Title Comparison of earthquake source spectra and attenuation in eastern North America and southeastern Australia
Language eng
Licence Not Specified
Landing Page https://data.gov.au/data/dataset/63f00796-3249-457b-8f7d-fadc72c9193b
Contact Point
Geoscience Australia Data
clientservices@ga.gov.au
Reference Period 20/04/2018
Geospatial Coverage
Map data © OpenStreetMap contributors
{
  "coordinates": [
    [
      [
        -180.0,
        -90.0
      ],
      [
        180.0,
        -90.0
      ],
      [
        180.0,
        90.0
      ],
      [
        -180.0,
        90.0
      ],
      [
        -180.0,
        -90.0
      ]
    ]
  ],
  "type": "Polygon"
}
Data Portal Geoscience Australia

Data Source

This dataset was originally found on Geoscience Australia "Comparison of earthquake source spectra and attenuation in eastern North America and southeastern Australia". Please visit the source to access the original metadata of the dataset:
https://ecat.ga.gov.au/geonetwork/srv/eng/csw/dataset/comparison-of-earthquake-source-spectra-and-attenuation-in-eastern-north-america-and-southeaste