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BeckerFraserPhotos February 2011 photograph 244
Images, UC QuakeStudies
A large crack in the ground at Sullivan Park in Avonside. A large deposit of liquefaction has dried around it, and plants are growing up through the crack.
BeckerFraserPhotos February 2011 photograph 245
Images, UC QuakeStudies
A large crack in the ground at Sullivan Park in Avonside. A large deposit of liquefaction has dried around it, and plants are growing up through the crack.
BeckerFraserPhotos September 2010 photograph 065
Images, UC QuakeStudies
A sign on Robson Avenue warning the public of "Low Power Lines". The power poles sank during the earthquake due to liquefaction destabilising the ground underneath.
BeckerFraserPhotos June 2011 photograph 287
Images, UC QuakeStudies
Damage to a building on Ferry Road. The side walls have partially collapsed, and bricks are scattered on the ground below. The building is cordoned off with security fencing.
BeckerFraserPhotos June 2011 photograph 288
Images, UC QuakeStudies
Damage to a building on Ferry Road. The side walls have partially collapsed, and bricks are scattered on the ground below. The building is cordoned off with security fencing.
BeckerFraserPhotos June 2011 photograph 294
Images, UC QuakeStudies
Damage to a building on Ferry Road. The side walls have partially collapsed, and bricks are scattered on the ground below. The building is cordoned off with security fencing.
BeckerFraserPhotos July 2011 photograph 992
Images, UC QuakeStudies
A photograph of the dome of the Regent Theatre building. The dome has been removed from the building and is sitting on the ground in Cathedral Square.
BeckerFraserPhotos March 2011 photograph 274
Images, UC QuakeStudies
St John's Presbyterian Church on Winchester Street in Lyttelton. The ground around the church is strewn with masonry that has fallen from the church's walls and collapsed tower.
BeckerFraserPhotos September 2010 photograph 075
Images, UC QuakeStudies
A private pool on a property on Avonside Drive. The pool has lifted out of its casing and now looks like an above ground pool.
BeckerFraserPhotos June 2011 photograph 290
Images, UC QuakeStudies
Damage to a building on Ferry Road. The side walls have partially collapsed, and bricks are scattered on the ground below. The building is cordoned off with security fencing.
BeckerFraserPhotos June 2011 photograph 295
Images, UC QuakeStudies
Damage to a building on Ferry Road. The side walls have partially collapsed, and bricks are scattered on the ground below. The building is cordoned off with security fencing.
BeckerFraserPhotos October 2011 photograph 537
Images, UC QuakeStudies
Photograph captioned by BeckerFraserPhotos, "At the end of the day, these workers on the Hotel Grand Chancellor take a ride back to ground".
BeckerFraserPhotos April 2011 photograph 113
Images, UC QuakeStudies
Photograph captioned by BeckerFraserPhotos, "The Arts Centre, Hereford Street. Careful palleting of the pieces of the Arts Centre which fell to the ground".
BeckerFraserPhotos April 2011 photograph 112
Images, UC QuakeStudies
Photograph captioned by BeckerFraserPhotos, "The Arts Centre, Hereford Street. Careful palleting of the pieces of the Arts Centre which fell to the ground".
BeckerFraserPhotos September 2010 photograph 093
Images, UC QuakeStudies
Cracking along the pavement at Halswell Primary School. The ground has risen and fallen in places leaving an uneven surface where the children usually play.
Ground motion simulation validation with explicit uncertainty incorporatio…
Research papers, University of Canterbury Library
This study explicitly investigates uncertainties in physics-based ground motion simulation validation for earthquakes in the Canterbury region. The simulations utilise the Graves and Pitarka (2015) hybrid methodology, with separately quantified parametric uncertainties in the comprehensive physics and simplified physics components of the model. The study is limited to the simulation of 148 small magnitude (Mw 3.5 – 5) earthquakes, with a point source approximation for the source rupture representations, which also enables a focus on a small number of relevant uncertainties. The parametric uncertainties under consideration were selected through sensitivity analysis, and specifically include: magnitude, Brune stress parameter and high frequency rupture velocity. Twenty Monte Carlo realisations were used to sample parameter uncertainties for each of the 148 events. Residuals associated with the following intensity measures: spectral acceleration, peak ground velocity, arias intensity and significant duration, were ascertained. Using these residuals, validation was performed through assessment of systematic biases in site and source terms from mixed-effects regression. Based on the results to date, initial standard deviation recommendations for parameter uncertainties, based on the Canterbury simulations have been obtained. This work ultimately provides an initial step toward explicit incorporation of modelling uncertainty in simulated ground motion predictions for future events, which will improve the use of simulation models in seismic hazard analysis. We plan to subsequently assess uncertainties for larger magnitude events with more complex ruptures, and events across a larger geographic region, as well as uncertainties due to path attenuation, site effects, and more general model epistemic uncertainties.
BeckerFraserPhotos September 2011 photograph 038
Images, UC QuakeStudies
Photograph captioned by BeckerFraserPhotos, "The cleared site of Ground, corner on London and Canterbury Streets, Lyttelton. A rest area and garden sales have developed here".
BeckerFraserPhotos April 2012 photograph 221
Images, UC QuakeStudies
A hydraulic excavator on Kilmore Street, lifting a steel beam over a hole in the ground. The area is fenced off by wire fencing and there are road cones across the street.
Ray Whelan WEMO Photograph 53
Images, UC QuakeStudies
A photograph of steel bracing keeping up a section of the ceiling on the ground floor of the Crowne Plaza. The column to the left is damaged.
BeckerFraserPhotos October 2010 photograph 102
Images, UC QuakeStudies
St John's Anglican Church in Hororata. The top of the bell tower has collapsed into the roof of the church, some falling onto the ground below where it still lies.
BeckerFraserPhotos October 2010 photograph 103
Images, UC QuakeStudies
St John's Anglican Church in Hororata. The top of the bell tower has collapsed into the roof of the church, some falling onto the ground below where it still lies.
BeckerFraserPhotos September 2011 photograph 037
Images, UC QuakeStudies
Photograph captioned by BeckerFraserPhotos, "The cleared site of Ground, corner on London and Canterbury Streets, Lyttelton. A rest area and garden sales have developed here".
Photograph by Paul Corliss 3242
Images, UC QuakeStudies
A photograph of the east side of the Odeon Theatre, showing the severe damage at the back of the theatre. Part of the roof sits on the ground in the section next door.
BeckerFraserPhotos April 2012 photograph 294
Images, UC QuakeStudies
The ground floor of the BNZ Building, seen from High Street. The glass has been removed and the insides gutted. The Cathedral can be viewed through the other side.
Central City Tour, 4 April 2011 - Photograph 43
Images, UC QuakeStudies
The top of one of the towers from the Arts Centre has been placed on the ground to prevent further damage. The photographer comments, "A bike ride around the CBD. Arts Centre".
BeckerFraserPhotos December 2011 photograph 0249
Images, UC QuakeStudies
A photograph captioned by BeckerFraserPhotos, "Workers deconstructing the Hotel Grand Chancellor. Panels are being detached and the crane is lowering them to the ground".
BeckerFraserPhotos October 2011 photograph 538
Images, UC QuakeStudies
Photograph captioned by BeckerFraserPhotos, "At the end of the day, these workers on the Hotel Grand Chancellor take a ride back to the ground".
BeckerFraserPhotos April 2011 photograph 024
Images, UC QuakeStudies
Sandbags placed along the river bank to prevent flooding onto the road. The earthquake caused the ground in this area to subside, making it susceptible to flooding.
BeckerFraserPhotos April 2011 photograph 022
Images, UC QuakeStudies
Sandbags placed along the river bank to prevent flooding onto the road. The earthquake caused the ground in this area to subside , making it susceptible to flooding.
BeckerFraserPhotos May 2013 photograph 058
Images, UC QuakeStudies
An abandoned residential property at 37 Seabreeze Close in Bexley. Weeds are growing through the cracks in the ground and the yard has become overgrown. The garage door has been vandalised with graffiti.