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Images, UC QuakeStudies

Two badly damaged cars in an empty site on the corner of Tuam and Barbadoes Streets. In the background are the Hotel Grand Chancellor, the Holiday Inn City Centre, and the Westpac building.

Research papers, University of Canterbury Library

Heathcote Valley school strong motion station (HVSC) consistently recorded ground motions with higher intensities than nearby stations during the 2010-2011 Canterbury earthquakes. For example, as shown in Figure 1, for the 22 February 2011 Christchurch earthquake, peak ground acceleration at HVSC reached 1.4 g (horizontal) and 2 g (vertical), the largest ever recorded in New Zealand. Strong amplification of ground motions is expected at Heathcote Valley due to: 1) the high impedance contrast at the soil-rock interface, and 2) the interference of incident and surface waves within the valley. However, both conventional empirical ground motion prediction equations (GMPE) and the physics-based large scale ground motions simulations (with empirical site response) are ineffective in predicting such amplification due to their respective inherent limitations.

Images, UC QuakeStudies

A photograph of 141 Cambridge Terrace taken from a vacant site on Gloucester Street. The building is under deconstruction and the windows have been removed so that the inside is visible.

Images, UC QuakeStudies

A photograph of Elizabeth Ackermann standing in front of a partially-demolished building on Cashel Street. In the background, two excavators are working to remove the rubble from the site.