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Research papers, University of Canterbury Library

This paper provides a comparison between the strong ground motions observed in the Christchurch central business district in the 4 September 2010 Mw7.1 Darfield, and 22 February 2011 Mw6.3 Christchurch earthquakes with those observed in Tokyo during the 11 March 2011 Mw9.0 Tohoku earthquake. Despite Tokyo being located approximately 110km from the nearest part of the causative rupture, the ground motions observed from the Tohoku earthquake were strong enough to cause structural damage in Tokyo and also significant liquefaction to loose reclaimed soils in Tokyo bay. Comparisons include the strong motion time histories, response spectra, significant durations and arias intensity. The implications for large earthquakes in New Zealand are also briefly discussed.

Research papers, University of Canterbury Library

On Tuesday 22 February 2011, a 6.3 magnitude earthquake struck Christchurch, New Zealand’s second largest city. The ‘earthquake’ was in fact an aftershock to an earlier 7.1 magnitude earthquake that had occurred on Saturday 4 September 2010. There were a number of key differences between the two events that meant they had dramatically different results for Christchurch and its inhabitants. The 22 February 2011 event resulted in one of New Zealand’s worst natural disasters on record, with 185 fatalities occurring and hundreds more being injured. In addition, a large number of buildings either collapsed or were damaged to the point where they needed to be totally demolished. Since the initial earthquake in September 2010, a large amount of building-related research has been initiated in New Zealand to investigate the impact of the series of seismic events – the major focus of these research projects has been on seismic, structural and geotechnical engineering matters. One project, however, conducted jointly by the University of Canterbury, the Fire Protection Association of New Zealand and BRANZ, has focused on the performance of fire protection systems in the earthquakes and the effectiveness of the systems in the event of post-earthquake fires occurring. Fortunately, very few fires actually broke out following the series of earthquake events in Christchurch, but fire after earthquakes still has significant implications for the built environment in New Zealand, and the collaborative research has provided some invaluable insight into the potential threat posed by post-earthquake fires in buildings. As well as summarising the damage caused to fire protection systems, this paper discusses the flow-on effect for designing structures to withstand post-earthquake fires. One of the underlying issues that will be explored is the existing regulatory framework in New Zealand whereby structural earthquake design and structural design for fire are treated as discrete design scenarios.

Images, eqnz.chch.2010

Container Love: shipping container decorated with knitted and crocheted squares. Sumner, Christchurch. File reference: CCL-2012-05-12-Around-Sumner-May-2012 DSC_034.JPG From the collection of Christchurch City Libraries.

Images, eqnz.chch.2010

Container Love: shipping container decorated with knitted and crocheted squares. Sumner, Christchurch. File reference: CCL-2012-05-12-Around-Sumner-May-2012 DSC_025.JPG From the collection of Christchurch City Libraries.

Images, eqnz.chch.2010

Container Love: shipping container decorated with knitted and crocheted squares. Sumner, Christchurch. File reference: CCL-2012-05-12-Around-Sumner-May-2012 DSC_022.JPG From the collection of Christchurch City Libraries.

Images, eqnz.chch.2010

Container Love: shipping container decorated with knitted and crocheted squares. Sumner, Christchurch. File reference: CCL-2012-05-12-Around-Sumner-May-2012 DSC_023.JPG From the collection of Christchurch City Libraries.

Audio, Radio New Zealand

Christchurch poet Jeffrey Paparoa Holman whose new collection Shaken Down 6.3 looks at the impacts and aftermath of the Christchurch earthquakes. It's published by Canterbury University Press.

Research papers, Lincoln University

Increasingly, economic, political and human crises, along with natural disasters, constitute a recurrent reality around the world. The effect of large-scale disaster and economic disruption are being felt far and wide and impacting libraries in diverse ways. Libraries are casualties of natural disasters, from earthquakes to hurricanes, as well as civil unrest and wars. Sudden cuts in library budgets have resulted in severe staff reductions, privatization and even closures. The presenters share their experiences about how they have prepared for or coped with profound change.

Audio, Radio New Zealand

New assessment guidelines are reclassifying houses which were previously written off as being repairable, leaving owners up to $180,000 worse off. Kathryn talks to Leanne Curtis, spokesperson for the Canterbury Community Earthquake Recovery Network, and Renee Walker, spokesperson for IAG New Zealand.