A photograph of a damaged building on Victoria Street. The photograph is captioned by Paul Corliss, "Behind the Knox Church".
A group of residents stand talking on the footpath beside River Road. The photographer comments, "Neighbours in River Rd".
A crane sits beside the sewage treatment ponds in Bromley. The photographer comments, "Bromley sewage treatment ponds, under repair".
A crane sits beside the sewage treatment ponds in Bromley. The photographer comments, "Bromley sewage treatment ponds, under repair".
A fallen concrete-block fence in Dallington. A power pole nearby is on a lean.
Detail of damage to the Cathedral of the Blessed Sacrament. The cross on the roof has been removed.
Detail of damage to the Cathedral of the Blessed Sacrament. The cross on the roof has been removed.
Interior damage in a house in Richmond. The photographer comments, "Revisiting our abandoned house. Cracked plaster".
Interior damage in a house in Richmond. The photographer comments, "Revisiting our abandoned house. Cracked plaster".
A story submitted by Irene to the QuakeStories website.
A photograph of the rubble of the Observatory tower in the South Quad of the Christchurch Arts Centre. The tower collapsed during the 22 February 2011 earthquake. A digger was used to clear the rubble away from the building. Scaffolding constructed around the tower has also collapsed and is amongst the rubble. In the background is a shipping container. A red sticker has been placed on the door to the Physics Building.
A photograph of the earthquake-damaged Observatory tower at the Christchurch Arts Centre. The photograph was taken using a cellphone camera. The top of the tower collapsed during the 22 February 2011 earthquake. The rubble from the tower has been cleared and a tarpaulin has been placed over the top of the broken tower. Tyres have been placed on the tarpaulin to hold it down. A temporary roof has also been constructed over the tower to keep out the rain.
Liquefaction-induced lateral spreading during the 2011 Christchurch earthquake in New Zealand was severe and extensive, and data regarding the displacements associated with the lateral spreading provides an excellent opportunity to better understand the factors that influence these movements. Horizontal displacements measured from optical satellite imagery and subsurface data from the New Zealand Geotechnical Database (NZGD) were used to investigate four distinct lateral spread areas along the Avon River in Christchurch. These areas experienced displacements between 0.5 and 2 m, with the inland extent of displacement ranging from 100 m to over 600 m. Existing empirical and semi-empirical displacement models tend to under estimate displacements at some sites and over estimate at others. The integrated datasets indicate that the areas with more severe and spatially extensive displacements are associated with thicker and more laterally continuous deposits of liquefiable soil. In some areas, the inland extent of displacements is constrained by geologic boundaries and geomorphic features, as expressed by distinct topographic breaks. In other areas the extent of displacement is influenced by the continuity of liquefiable strata or by the presence of layers that may act as vertical seepage barriers. These observations demonstrate the need to integrate geologic/geomorphic analyses with geotechnical analyses when assessing the potential for lateral spreading movements.
A photograph captioned by BeckerFraserPhotos, "Tributes left on Colombo Street at the bus stop between St Asaph and Tuam Streets where nine people died on the bus and four on the pavement on 22 February 2011".
Photograph captioned by BeckerFraserPhotos, "The west wall of the Christ Church Cathedral where the rose window fell during the 23 December 2011 earthquake. Steel bracing has been used to hold up the front of the church".
Photograph captioned by BeckerFraserPhotos, "The west wall of the Christ Church Cathedral where the rose window fell during the 23 December 2011 earthquake. Steel bracing has been used to hold up the front of the church".
Photograph captioned by BeckerFraserPhotos, "The west wall of the Christ Church Cathedral where the rose window fell during the 23 December 2011 earthquake. Steel bracing has been used to hold up the front of the church".
A photograph captioned by BeckerFraserPhotos, "A tribute left on the Colombo Street bus stop between St Asaph and Tuam Streets where nine people died on the bus and four on the pavement on 22 February 2011".
This paper presents on-going challenges in the present paradigm shift of earthquakeinduced ground motion prediction from empirical to physics-based simulation methods. The 2010-2011 Canterbury and 2016 Kaikoura earthquakes are used to illustrate the predictive potential of the different methods. On-going efforts on simulation validation and theoretical developments are then presented, as well as the demands associated with the need for explicit consideration of modelling uncertainties. Finally, discussion is also given to the tools and databases needed for the efficient utilization of simulated ground motions both in specific engineering projects as well as for near-real-time impact assessment.
A photograph submitted by Anonymous to the QuakeStories website. The description reads, "Damage and chaos at work, Feb 22nd.".
A photograph submitted by Philip Broderick Willis to the QuakeStories website. The description reads, "Christchurch National Memorial Service (Prince William)".
A photograph submitted by Anonymous to the QuakeStories website. The description reads, "Liquifaction silt and damaged heat pump, Feb 22nd.".
A photograph submitted by Anonymous to the QuakeStories website. The description reads, "The remains of the back yard, Feb 22nd.".
A photograph of an overgrown residential property. The photograph is captioned by Paul Corliss, "The block of Bexley and Pages Roads".
A building where the brick walls have crumbled has been cordoned off. Handwritten notes and poems in a heart shape adorns the fence.
A photograph of drilling machinery beside the Avon River. The photograph is captioned by Paul Corliss, "Fitzgerald Avenue".
A photograph of drilling machinery beside the Avon River. The photograph is captioned by Paul Corliss, "Fitzgerald Avenue".
A photograph submitted by Jocelyn to the QuakeStories website. The description reads, "1.10pm, 22 Feb, Kilmore / Colombo corner.".
A story submitted by Rachel to the QuakeStories website.
A story submitted by Anonymous to the QuakeStories website.