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Images for Spring; more images...

Images, Alexander Turnbull Library

The cartoon shows a daffodil blooming in an earthquake fissure with the wrecked buildings of Christchurch in the background. Context: September 4th is the anniversary of the first quake. Many people in Christchurch are still living in houses that may yet be red stickered (condemned) and many city buildings are still out of bounds, either condemned to destruction or rebuilt after the earthquakes of September 4th 2010 and February 22nd and June 13th 2011. But the return of spring maybe brings a sense of encouragement and hope. Title provided by librarian Quantity: 1 digital cartoon(s).

Images, Alexander Turnbull Library

Text at the top of the cartoon reads 'NZ city strengthening?' A whole city enclosed in a glass dome and balanced on huge springs intended to make it earthquake resistant rocks as another aftershock hits. Context - Two earthquakes and hundreds of aftershocks have hit Christchurch, the first on 4 September 2010 and a second more devastating one on 22 February 2011. There has been great emphasis on making heritage buildings that are rebuilt and all new buildings earthquake resistant. The example in the cartoon is perhaps a Springs-with-damper base isolator. Quantity: 1 digital cartoon(s).

Images, eqnz.chch.2010

This winter-eve is warm, Humid the air! leafless, yet soft as spring, The tender purple spray on copse and briers! And that sweet city with her dreaming spires, She needs not June for beauty's heightening, Lovely all times she lies, lovely to-night!— From "Thyrsis: A Monody" by Matthew Arnold 1822–1888

Research papers, University of Canterbury Library

An overview of the 22 February 2011 Christchurch earthquake is presented in the context of characterization of extreme/rare events. Focus is given to the earthquake source, observed near-source strong ground motions, and effects of site response, while structural response and consequences are mentioned for completeness. For each of the above topics comparisons and discussions are made with predictive models for each of phenomena considered. In light of the observations and predictive model comparisons, the author’s opinion on improving the characterization of such extreme/rare events, and their appropriate consideration in seismic design is presented