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Images for christchurch earthquake; more images...

Images, UC QuakeStudies

A photograph looking east down Gloucester Street, towards the intersection of Manchester Street. On-lookers are surveying earthquake damage from behind the cordon. The Christchurch City Council parking building can be seen in the distance.

Images, UC QuakeStudies

A photograph of a generator set up in Hagley Park to power campervans. The campervans were being used as temporary accommodation for emergency management personnel who travelled to Christchurch after the 22 February 2011 earthquakes.

Research papers, University of Canterbury Library

We present ground motion simulations of the Porters Pass (PP) fault in the Canterbury region of New Zealand; a major active source near Christchurch city. The active segment of the PP fault has an inferred length of 82 km and a mostly strike-slip sense of movement. The PP fault slip makes up approximately 10% of the total 37 mm/yr margin-parallel plate motion and also comprises a significant proportion of the total strain budget in regional tectonics. Given that the closest segment of the fault is less than 45 km from Christchurch city, the PP fault is crucial for accurate earthquake hazard assessment for this major population centre. We have employed the hybrid simulation methodology of Graves and Pitarka (2010, 2015), which combines low (f<1 Hz) and high (f>1 Hz) frequencies into a broadband spectrum. We have used validations from three moderate magnitude events (𝑀𝑀4.6 Sept 04, 2010; 𝑀𝑀4.6 Nov 06, 2010; 𝑀𝑀4.9 Apr 29, 2011) to build confidence for the 𝑀𝑀 > 7 PP simulations. Thus far, our simulations include multiple rupture scenarios which test the impacts of hypocentre location and the finite-fault stochastic rupture representation of the source itself. In particular, we have identified the need to use location-specific 1D 𝑉𝑠/𝑉𝑝 models for the high frequency part of the simulations to better match observations.

Images, UC QuakeStudies

A wreath from the Singapore Contingent lying on a table in the memorial tent at the Botanic Gardens. The tent was set up for people who wanted to make a tribute to those who lost their lives during the Canterbury earthquakes. A note on the wreath reads, "The Singapore Contingent wishes to express our deepest sympathies and condolences to the people of Christchurch, New Zealand and all who have lost their lives during the 22nd February 2011 earthquake. Our hearts and thoughts are with you. From the men and women of the Singapore Contingent assisting with rescue and relief efforts in Christchurch".