The 2012 Australian Earthquake Hazard Map

Catalogue Number :	74811
Release Date :	16 November 2012
Senior Author :	Burbidge, D.R.
Product Type :	GA Publication–Record
Volume/MAP ID :	2012/071
Medium :	WEB
Theme(s) :	WMS, earthquakes, geohazards, hazards, seismology, web map service
Abstract :	This document presents a new set of earthquake hazard maps for consideration in the next revision of the earthquake loading code AS1170.4 "Structural design actions: Part 4 Earthquake actions in Australia". The earthquake catalogue used here includes events up until 2011. It is a combined version of several catalogues provided by external agencies. This represents the most complete catalogue of earthquakes compiled for Australia. The catalogue is more consistent through conversion of various magnitude measurements into a 'pseudo ML' scale. A systematic logic is used to select preferred magnitude types. Aftershocks, foreshocks and mine blasts have been identified and the declustered catalogue used here is cleaner than any previous Australian catalogue. Earthquake source zones applied in the hazard map use a unique combination of three different layers, which capture seismic characteristics at sub-national, regional and high-activity point scales. The map is one of the first in the world to apply a semi-quantitative measure of Mmax for majority of the source zones in the map. We apply recently developed ground motion prediction equations based on modern methods and data. These equations were used to calculate the ground motion at a range of response spectral accelerations, rather than just calculating the hazard for peak ground acceleration (PGA). A suite of maps is calculated using GA's Earthquake Risk Model (EQRM). The EQRM is open-source, allowing the results to be tested or modified independently. The final 2012 Australian earthquake hazard maps for a range of return periods and response spectral periods are presented herein.
Spatial Extent :	N LAT: -9.0  W LONG: 110.0 S LAT: -45.0  E LONG: 156.0
Resources :	Download the record
	Download the 2012 Australian Earthquake Hazard Map - GA Record [PDF 26MB]
	Download the 2012 Australian Earthquake Hazard Map - Map only [PDF 75KB]
	View the 2012 Australian Earthquake Hazard Map - Interactive map
	Link to Web Service

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