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Images, UC QuakeStudies

A digitally manipulated image of diggers sitting on top of rubble beside the old Railway Station. The photographer comments, "Which one will be buried 6 foot under?".

Videos, UC QuakeStudies

A video of excavators demolishing the former railway station on Moorhouse Avenue. The building was only moderately damaged during the 22 February 2011 earthquake, but repair work was deemed too costly for the co-owner, Science Alive!.

Research papers, University of Canterbury Library

Local independent radio stations in Christchurch, New Zealand, had their operations severely disrupted by major earthquakes in September 2010 and February 2011. This article examines the experiences of three radio stations that were shut out of their central city premises by the cordon drawn around the city after the 22 February quake. One of the stations continued broadcasting automatically, while the others were unable to fully get back on air for several weeks afterwards. All of the stations had to manage access to workspaces, the emotional needs of staff and volunteers, the technical ability to broadcast, and the need to adapt content appropriately when back on air. For the locally based radio managers decisions had to be made about the future of the stations in a time of significant emotional, physical, and geological upheaval. The article explores how these radio stations were disrupted by the earthquake, and how they returned to air through new combinations and interconnections of people, workspace, technology, content and transmission.

Images, eqnz.chch.2010

Christchurch's old central city police station building will now be demolished on Sunday by implosion. Another one of Christchurch recognisable buildings to be given a death sentence following the earthquakes of 2010/2011. Photo by Geoff Trotter at www.dreamdreams.co.nz

Research papers, University of Canterbury Library

This report presents an overview of the soil profile characteristics at a number of strong motion station (SMS) sites in Christchurch and its surrounds. An extensive database of ground motion records has been captured by the SMS network in the Canterbury region during the Canterbury earthquake sequence. However in order to comprehensively understand the ground motions recorded at these sites and to be able to relate these motions to other locations, a detailed understanding of the shallow geotechnical profile at each SMS is required. The original NZS1170.5 (SNZ 2004) site subsoil classifications for each SMS site is based on regional geological information and well logs located at varying distances from the site. Given the variability of Christchurch soils, more detailed investigations are required in close vicinity to each SMS to better understand stratigraphy and soil properties, which are important in seismic site response. In this regard, CPT, SPT and borehole data, shear wave velocity (Vs) profiles, and horizontal to vertical spectral ratio measurements (H/V) in close vicinity to the SMS were used to develop representative soil profiles at each site. NZS1170.5 (SNZ 2004) site subsoil classifications were updated using Vs and SPT N60 criteria. Site class E boundaries were treated as a sliding scale rather than as a discrete boundary to account for locations with similar site effects potential, an approach which was shown to result in a better delineation between the site classes. SPT N60 values often indicate a stiffer site class than the Vs data for softer soil sites, highlighting the disparity between the two site investigation techniques. Both SPT N60 and Vs based site classes did not always agree with the original site classifications. This emphasises the importance of having detailed site‐specific information at SMS locations in order to properly classify them. Furthermore, additional studies are required to harmonize site classification based on SPT N60 and Vs. Liquefaction triggering assessments were carried out for the Darfield and Christchurch earthquakes, and compared against observed liquefaction surface manifestations and ground motions characteristics at each SMS. In general, the characteristics of the recorded ground motions at each site correlate well with the triggering analyses. However, at sites that likely liquefied at depth (as indicated by triggering analyses and/or inferred from the characteristics of the recorded surface acceleration time series), the presence of a non‐liquefiable crust layer at many of the SMS locations prevented the manifestation of any surface effects.

Images, UC QuakeStudies

Photograph captioned by Fairfax, "A unit of about 15 New Zealand Territorial Army soldiers prepare to sandbag a broken pumping station in New Brighton to stop water pouring into neighbouring properties. The pumping station on the corner of Palmers Road and New Brighton Road was badly damaged and water was pouring onto both streets".

Images, UC QuakeStudies

Photograph captioned by Fairfax, "A unit of about 15 New Zealand Territorial Army soldiers prepare to sandbag a broken pumping station in New Brighton to stop water pouring into neighbouring properties. The pumping station on the corner of Palmers Road and New Brighton Road was badly damaged and water was pouring onto both streets".