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Audio, Radio New Zealand

'Designed by an incompetent engineer, supervised by an irresponsible engineer and constructed by a fake engineer'. Those were the views of the Christchurch Earthquake Families Group, heard today, at the first - and only - disciplinary hearing to be held against anyone who designed and built the CTV building in Christchurch.

Research papers, University of Canterbury Library

This manuscript provides a critical examination of the ground motions recorded in the near-source region resulting from the 22 February 2011 Christchurch earthquake. Particular attention is given to reconciling the observed spatial distribution of ground motions in terms of physical phenomena related to source, path and site effects. The large number of near-source observed strong ground motions show clear evidence of: forward-directivity, basin generated surface waves, liquefaction and other significant nonlinear site response. The pseudo-acceleration response spectra (SA) amplitudes and significant duration of strong motions agree well with empirical prediction models, except at long vibration periods where the influence of basin-generated surface waves and nonlinear site response are significant and not adequately accounted for in empirical SA models. Pseudo-acceleration response spectra are also compared with those observed in the 4 September 2010 Darfield earthquake and routine design response spectra used in order to emphasise the amplitude of ground shaking and elucidate the importance of local geotechnical characteristics on surface ground motions. The characteristics of the observed vertical component accelerations are shown to be strongly dependent on source-to-site distance and are comparable with those from the 4 September 2010 Darfield earthquake, implying the large amplitudes observed are simply a result of many observations at close distances rather than a peculiar source effect.

Images, eqnz.chch.2010

It is hard to imagine the destruction which surrounds this area on such a beautiful clear calm sunny spring morning, It seems as if Christchuch has changed forever. I wonder how long it will take us to recover.

Images, eqnz.chch.2010

A view after the 7.1 magnitude earthquake in Christchurch 4 September 2010. Corner of Colombo and Byron Streets. Given a bit of a HDR process to add some of what I was "feeling" at the time.

Audio, Radio New Zealand

As the nation prepares for lockdown, Christchurch's leaders says their city is prepared. Over the past ten years Christchurch has dealt with it's fair share of crisis, from earthquakes, Port Hills fires, the March 15 terror attacks, flooding, and a gas explosion. While Covid-19 has a global impact, some Cantabrians say their past experience will help them get through. Eleisha Foon reports.

Images, UC QuakeStudies

Photograph captioned by Fairfax, "Christchurch Earthquake. Christchurch was rocked by a large aftershock shortly after 8am this morning. Linemen cutting power to a damaged line outside an old historic building on the corner of Montreal Street and Moorhouse Avenue which will have work done to it to try and save as much as they can".

Images, UC QuakeStudies

Photograph captioned by Fairfax, "Christchurch Earthquake. Christchurch was rocked by a large aftershock shortly before 8am this morning. Linemen cutting power to a damaged line outside an old historic building on the corner of Montreal Street and Moorhouse Avenue which will have work done to it to try and save as much as they can".

Images, UC QuakeStudies

Photograph captioned by Fairfax, "Christchurch Earthquake. Christchurch was rocked by a large aftershock shortly after 8am this morning. Linemen cutting power to a damaged line outside an old historic building on the corner of Montreal Street and Moorhouse Avenue which will have work done to it to try and save as much as they can".

Images, UC QuakeStudies

Photograph captioned by Fairfax, "Christchurch Earthquake. Christchurch was rocked by a large aftershock shortly after 8am this morning. Linemen cutting power to a damaged line outside an old historic building on the corner of Montreal Street and Moorhouse Avenue which will have work done to it to try and save as much as they can".