Canterbury Earthquakes Royal Commission Te Komihana Rūwhenua o Waitaha Canterbury Earthquakes Royal Commission – Te Komihana Rūwhenua o Waitaha

Those who lost relatives and friends in the 22 February earthquake can be assured that there will be a very thorough inquiry into the failure of buildings that resulted in loss of life.
Chair, Justice Mark Cooper

Ground Motion and Seismicity Aspects of 4 September 2010 Darfield and 22 February 2011 Christchurch Earthquakes: Technical report by Brendon Bradley of Bradley Seismic Ltd, January 2012

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This report examines seismicity and ground motions for the 4 September 2010 and 22 February 2011 Canterbury earthquakes. It presents concepts of seismic hazard analysis and design ground motions to assist an understanding of the design ground motion provisions in the New Zealand seismic loading standard (NZS1170.5:2004) and examines relevant New Zealand seismicity models for consistency with respect to the Canterbury earthquakes. The observed strong ground motions are compared with empirical New Zealand-specific ground motion models.

About this document

    Record ID Attachment Author(s) Subject(s) Building(s) Action
    SEI.BRA.0002PDF, 62 pages, 2.21 mb
    • Bradley Seismic Ltd
    • Bradley, Brendon
    • Seismicity

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