From Geoscience Australia

Atlas of isoseismal maps of Australian earthquakes

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Created 13/01/2025

Updated 13/01/2025

This Atlas of isoseismal maps of Australian earthquakes contains the results of the ground intensity effects from all known Australian earthquakes for which adequate documentation is available. A total of 83 isoseismal maps are presented for 70 Australian earthquakes. The Atlas is arranged with each isoseismal map presented in chronological order, facing a page containing a brief description of the earthquake and the methods used to obtain the intensity data. References to the source of the map and to other publications that contain information on the earthquake's intensity are also given. The earliest map is from the July 1883 Mount Barker (SA) earthquake and the most recent from the November 1981 Suggan Buggan (NSW) earthquake. The largest recorded earthquakes from the Australian continent have occurred in Western Australia. These were the 1941 Meeberrie and 1968 Meckering events, which have magnitudes of about ML 7, and were felt at distances of about 900 and 800 kilometres from their respective epicentres. In South Australia, the 1897 Beachport earthquake (magnitude 6.5) produced the greatest shaking and was felt about 600 kilometres from the epicentre; in eastern Australia, the 1935 Gayndah (Qld), 1961 Robertson-Bowral (NSW), and 1973 Picton (NSW) earthquakes were felt out to about 400 kilometres and the 1918 Bundaberg (Qld) earthquake was felt at distances of about 650 km. The 1968 Meckering and June 1979 Cadoux earthquakes produced the highest observed ground shaking. Intensities of MM IX were experienced, and fault scarps, with throws of about a metre, extended over several kilometres for each earthquake. Intensities of MM VIII were recorded for the 1897 Beachport, 1902 Warooka, 1941 Meeberrie, 1949 Dalton-Gunning, and 1954 Adelaide earthquakes. Total damage caused by the June 1979 Cadoux earthquake was 3.8 million dollars (1979 prices) and the 1968 Meckering earthquake, 2.2 million dollars (1968 prices). The 1954 Adelaide earthquake caused 4 million pounds damage at 1954 prices.

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Title Atlas of isoseismal maps of Australian earthquakes
Language eng
Licence notspecified
Landing Page https://devweb.dga.links.com.au/data/dataset/e89be6b9-55aa-4121-933b-411f1c34ff92
Contact Point
Geoscience Australia
clientservices@ga.gov.au
Reference Period 20/04/2018
Geospatial Coverage {"type": "Polygon", "coordinates": [[[112.0, -44.0], [155.0, -44.0], [155.0, -10.0], [112.0, -10.0], [112.0, -44.0]]]}
Data Portal data.gov.au