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Images for Sept; more images...

Images, UC QuakeStudies

A photograph submitted by Mark to the QuakeStories website. The description reads, "Neighbour’s concrete pool after 04 Sept’ 2010 quake, Horseshoe Lake.".

Images, UC QuakeStudies

A photograph submitted by Bettina Evans to the QuakeStories website. The description reads, "The gate of the Convent of Mercy, Lyttelton, cnr. Canterbury Str./Exeter Str., Sept. 2011".

Images, UC QuakeStudies

A photograph submitted by Bettina Evans to the QuakeStories website. The description reads, "The wrapped upstairs remnants of the Harbour Master’s Cafe, Lyttelton, cnr. Norwich Quay/Oxford Street, Sept. 2011.".

Articles, UC QuakeStudies

A post on the NZ Raw blog written by Mark Lincoln on 4 September 2010. Mark says, "This is the first [blog post] I wrote on 4th Sept. I always remember an announcer on the radio having the first on-air interview with Geonet/EQC (obviously only 1 or 2 staff members at that stage!). The announcer asked if the aftershocks would carry on for much longer and the Geonet guy said they could carry on for a few weeks. Radio announcer seemed shocked".

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 (𝑀𝑤4.6 Sept 04, 2010; 𝑀𝑤4.6 Nov 06, 2010; 𝑀𝑤4.9 Apr 29, 2011) to build confidence for the 𝑀𝑤 > 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.