Observed Ground Motions in the 4 September 2010 Darfield and 22 February 2011 Christchurch Earthquakes (2012)
Type of ContentConference Contributions - Published
PublisherUniversity of Canterbury. Civil and Natural Resources Engineering
This paper provides an overview of the salient aspects of the dense array of ground motions observed in the 4 September 2010 Darfield and 22 February 2011 Christchurch earthquakes. Particular attention is given to inferred physical reasons for the observed ground motions, which include: (i) source features such as forward directivity effects; (ii) The effects of the Canterbury Plains sedimentary basin on basin-generated surface waves, and waveguide effects through the region; and (iii) the importance of local site response as evidenced by observations of large long period amplification and liquefaction. The significance of vertical ground motion intensity is also examined.
CitationBradley, B.A. (2012) Observed Ground Motions in the 4 September 2010 Darfield and 22 February 2011 Christchurch Earthquakes. Christchurch, New Zealand: 2012 New Zealand Society for Earthquake Engineering Conference, 13-15 Apr 2012.
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ANZSRC Fields of Research40 - Engineering::4005 - Civil engineering::400506 - Earthquake engineering
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