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Photograph captioned by BeckerFraserPhotos, "The organ in St Bartholomew's Anglican Church in Kaiapoi, the oldest surviving church in Canterbury. The organ has survived the earthquakes well".
A photograph of the earthquake damage to the Canterbury Television Building on Gloucester Street. Some of the concrete on the columns has crumbled, revealing the steel reinforcement underneath.
1. Background and Objectives This poster presents results from ground motion simulations of small-to-moderate magnitude (3.5≤Mw≤5.0) earthquake events in the Canterbury, New Zealand region using the Graves and Pitarka (2010,2015) methodology. Subsequent investigation of systematic ground motion effects highlights the prediction bias in the simulations which are also benchmarked against empirical ground motion models (e.g. Bradley (2013)). In this study, 144 earthquake ruptures, modelled as point sources, are considered with 1924 quality-assured ground motions recorded across 45 strong motion stations throughout the Canterbury region, as shown in Figure 1. The majority of sources are Mw≥4.0 and have centroid depth (CD) 10km or shallower. Earthquake source descriptions were obtained from the GeoNet New Zealand earthquake catalogue. The ground motion simulations were performed within a computational domain of 140km x 120km x 46km with a finite difference grid spacing of 0.1km. The low-frequency (LF) simulations utilize the 3D Canterbury Velocity Model while the high-frequency (HF) simulations utilize a generic regional 1D velocity model. In the LF simulations, a minimum shear wave velocity of 500m/s is enforced, yielding a maximum frequency of 1.0Hz.
An aerial view of Lyttelton a week after the 22 February 2011 earthquake.
An aerial view of Lyttelton a week after the 22 February 2011 earthquake.
An aerial view of Lyttelton a week after the 22 February 2011 earthquake.
An aerial view of Lyttelton a week after the 22 February 2011 earthquake.
The Taiwanese Search and Rescue team being farewelled at the Christchurch International Airport after helping out with the emergency response to the Canterbury Earthquake.
The Taiwanese Search and Rescue team being farewelled at the Christchurch International Airport after helping out with the emergency response to the Canterbury Earthquake.
The Taiwanese Search and Rescue team being farewelled at the Christchurch International Airport after helping out with the emergency response to the Canterbury Earthquake.
The Taiwanese Search and Rescue team being farewelled at the Christchurch International Airport after helping out with the emergency response to the Canterbury Earthquake.