A photograph captioned by Paul Corliss, "Avon River at Kibblewhite Reserve".
A photograph captioned by Paul Corliss, "Avonside and Retreat Roads post earthquake".
A photograph captioned by Paul Corliss, "Avon River at Kibblewhite Reserve".
A photograph captioned by Paul Corliss, "Avonside and Retreat Roads post earthquake".
A photograph captioned by Paul Corliss, "Avonside and Retreat Roads post earthquake".
A photograph of a damaged footpath on Cambridge Terrace.
A photograph of a damaged footpath on Cambridge Terrace.
A photograph of a damaged footpath on Cambridge Terrace.
A photograph of a damaged footpath captioned by Paul Corliss, "Avonside and Retreat Roads post earthquake".
Liquefaction-induced lateral spreading during earthquakes poses a significant hazard to the built environment, as observed in Christchurch during the 2010 to 2011 Canterbury Earthquake Sequence (CES). It is critical that geotechnical earthquake engineers are able to adequately predict both the spatial extent of lateral spreads and magnitudes of associated ground movements for design purposes. Published empirical and semi-empirical models for predicting lateral spread displacements have been shown to vary by a factor of <0.5 to >2 from those measured in parts of Christchurch during CES. Comprehensive post- CES lateral spreading studies have clearly indicated that the spatial distribution of the horizontal displacements and extent of lateral spreading along the Avon River in eastern Christchurch were strongly influenced by geologic, stratigraphic and topographic features.
Photograph captioned by BeckerFraserPhotos, "An aerial photograph showing extreme examples of lateral spreading on the banks of the River Avon near the rowing clubs at Kerrs Reach".
Photograph captioned by BeckerFraserPhotos, "Avonside Drive - there are a number of fissures of this depth about".
An entry from Sue Davidson's blog for 24 October 2012 entitled, "News of Mural Madness spreads on FBk".
A photograph of a damaged footpath on Cambridge Terrace.
Photograph captioned by BeckerFraserPhotos, "Oxford Terrace in the Avon Loop area showing the lateral spread on the river banks".
An aerial photograph captioned by BeckerFraserPhotos, "The rowing clubs at Kerr's Reach".
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.
Photograph captioned by BeckerFraserPhotos, "Victoria Square is full of deep fissures. Lateral spread near the Avon".
A photograph submitted by Mark to the QuakeStories website. The description reads, "Lateral spreading in the back yard, approx 350mm wide.".
A man inspects damage to his garden. Liquefaction and cracking can be seen on the path and lawn. The photographer comments, "Lateral spreading and liquefaction".
Photograph captioned by BeckerFraserPhotos, "164-170 Hereford Street with the tell-tale gravel spread on the roadway signalling imminent demolition".
Photograph captioned by BeckerFraserPhotos, "164-170 Hereford Street with the tell-tale gravel spread on the roadway signalling imminent demolition".
Photograph captioned by BeckerFraserPhotos, "Community House, 141 Hereford Street. Note the pile of gravel ready to be spread prior to demolishing the building".
Photograph captioned by BeckerFraserPhotos, "Gough House, 90 Hereford Street. The gravel spread in front of this building is a signal it will shortly be demolished".
Road cones cordon off a large crack in River Road where the road has slumped towards the river. The photographer comments, "Lateral spreading towards the river is very obvious here".
Damage to River Road in Richmond. The road surface is badly cracked and slumped, and liquefaction silt covers part of the road. The photographer comments, "Lateral spreading cracks in River Rd".
Large cracks in River Road, where the road has slumped towards the river. The photographer comments, "River Rd, near Swanns Rd. Lateral spreading damage in River Rd near Avonside GHS".
Damage to River Road in Richmond. The river bank has slumped towards the river, opening up a large crack along the side of the road. The photographer comments, "Lateral spreading in River Rd".
A photograph of a damaged colourful brick wall at New Brighton mall. There are bricks in front of it spread in a pattern, as well as a coiled up power cable.
Photograph captioned by BeckerFraserPhotos, "Kenton Chambers, 190 Hereford Street - these heaps of shingle in front of the building will be spread over the street to protect the street when the building is demolished".