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BeckerFraserPhotos May 2013 photograph 104
Images, UC QuakeStudies
An abandoned residential property at 34 Waygreen Avenue in New Brighton. The front of the section is overgrown with weeds and silt from liquefaction. Cushions lie on the footpath. A blue sticker can be seen on the window.
BeckerFraserPhotos February 2011 photograph 270
Images, UC QuakeStudies
The sunken footpath around the base of a power pole on Bracken Street in Avonside. Dry silt from liquefaction can be seen mixed in with the gravel around it as a result of the 4 September 2010 earthquake.
BeckerFraserPhotos April 2011 photograph 035
Images, UC QuakeStudies
A view down New Brighton Road where silt from liquefaction still remains on the street curb. A power pole in the foreground is on a noticeable lean and a Port-a-loo can be seen to the right.
22 February Earthquake - Photograph 03
Images, UC QuakeStudies
Damage to Medway Street in Richmond. The road surface is cracked and buckled, and covered in liquefaction silt. A temporary road sign restricting speed to 30 is visible, with road cones behind. The photographer comments, "Medway St, Woodchester Ave on right just beyond the 30 sign".
Ray Whelan WEMO Photograph 38
Images, UC QuakeStudies
A photograph of large cracks in the pavement in front of St Paul's School in Dallington. Liquefaction silt can also be seen. Police tape has been draped across the entrance of the building to the left.
BeckerFraserPhotos May 2013 photograph 091
Images, UC QuakeStudies
An abandoned residential property at 20 Waygreen Avenue in New Brighton. The section is covered with weeds and silt from liquefaction. 'HM' has been spray painted in green on the front wall of the house. The gutter has partly flooded.
BeckerFraserPhotos September 2010 photograph 090
Images, UC QuakeStudies
A sand volcano in the Halswell Primary School grounds. Sand volcanoes were caused by liquefaction where the soil loses its strength during the earthquake and the silt rises upwards, ejecting out of a hole like magma in a volcano.
Photo by Jennifer Middendorf 051
Images, UC QuakeStudies
Warped bike stands and liquefaction silt on the corner of High, Colombo and Hereford streets. A public walkway down Colombo Street to a small viewing area in the Square was opened up for a few weekends to allow the public to see inside the Red Zone.
BeckerFraserPhotos May 2013 photograph 102
Images, UC QuakeStudies
An abandoned residential property at 32 Waygreen Avenue in New Brighton. The front of the section is overgrown with weeds and silt from liquefaction. One brick fence posts remain upright and two others have toppled onto the grass. The gutter has partly flooded.
BeckerFraserPhotos May 2013 photograph 108
Images, UC QuakeStudies
A view looking south down Waygreen Avenue in New Brighton. The footpath is covered with weeds and silt from liquefaction. Flooding can be seen along the edges of the road. A road cone stands in the middle of the road.
BeckerFraserPhotos May 2013 photograph 090
Images, UC QuakeStudies
An abandoned residential property at 16 Waygreen Avenue in New Brighton. The front of the section is covered with weeds and silt from liquefaction. A pram, a baby's car seat, a skateboard, and a hose have been left in the driveway.
BeckerFraserPhotos May 2013 photograph 084
Images, UC QuakeStudies
An abandoned residential property at 12 Waygreen Avenue in New Brighton. The section is covered with weeds and silt from liquefaction. A section of the driveway is partly flooded. Splinters of wood from the broken fence lie on the driveway.
BeckerFraserPhotos May 2013 photograph 113
Images, UC QuakeStudies
An empty section where a house once stood at 27 Waygreen Avenue in New Brighton. The section has partly flooded and is overgrown with weeds and silt from liquefaction. An road cone sits to the left-hand side of the section.
BeckerFraserPhotos May 2013 photograph 044
Images, UC QuakeStudies
An abandoned residential property at 12 Seabreeze Close in Bexley. A damaged window has been boarded up around the side of the house and the front window has been vandalised with graffiti. The yard is covered with weeds and silt from liquefaction.
22 February Earthquake - Photograph 11
Images, UC QuakeStudies
Trees alongside the Avon River in Richmond. The river level is high, and the water is grey with silt. One of the trees is leaning towards the river. The photographer comments, "High river levels because of liquefaction in the Avon. Near 373 River Rd, Richmond".
BeckerFraserPhotos May 2013 photograph 099
Images, UC QuakeStudies
An abandoned residential property at 28 Waygreen Avenue in New Brighton. The front of the section is covered with weeds and silt from liquefaction. Three broken chairs lie outside the front of the house. The front door is open. 'HM' has been spray-painted in green onto the front wall.
BeckerFraserPhotos April 2011 photograph 036
Images, UC QuakeStudies
Earthquake damage down New Brighton Road. There is cracking on the footpath and cars are parked on the front lawns as silt from liquefaction still remains on the street curb. A van with a 'school' sign can be seen driving down the road.
BeckerFraserPhotos May 2013 photograph 097
Images, UC QuakeStudies
A flooded driveway leading to 26 and 28 Waygreen Avenue in New Brighton. The driveway is covered with weeds and silt from liquefaction. The mailbox is on a lean and on the right-hand side is an empty section where a house once stood.
22 February Earthquake - Photograph 04
Images, UC QuakeStudies
Damage to Medway Street in Richmond. The road surface is cracked and buckled, and covered in liquefaction silt. A temporary road sign restricting speed to 30 is visible, with road cones behind. The photographer comments, "Medway St, between Woodchester Ave and River Rd. Woodchester Ave on right just beyond the 30 sign".
22 February Earthquake - Photograph 26
Images, UC QuakeStudies
Damage to the garden of a house in Richmond. Liquefaction is visible among the plants and on the driveway. The photographer comments, "These photos show our old house in River Rd and recovery work around Richmond and St Albans. Back lawn under 10cm of water and silt".
BeckerFraserPhotos May 2013 photograph 075
Images, UC QuakeStudies
An abandoned residential property at 4 Waireka Lane in Bexley. The driveway is covered with weeds and silt from liquefaction. One of the garage doors is twisted and the other has 'HM' spray-painted on it. The number four has been spray-painted on the brick wall under the window.
22 February Earthquake - Photograph 31
Images, UC QuakeStudies
Water and liquefaction flows into the Avon River in Richmond. The water level is very high, and the water is cloudy with silt. The photographer comments, "Water from Dudley Creek took a shortcut across the road into the Avon. It doesn't have much of a drop from the road to the river".
Rydal Street sand volcanos
Images, eqnz.chch.2010
It would have been a glorious Spring day in Christchurch had it not been for the magnitude 7.1 earthquake at 4:30 am. All the water and silt you can see covering the street in this photo erupted from the ground following the earthquake.
BeckerFraserPhotos December 2011 photograph 2351
Images, UC QuakeStudies
A photograph captioned by BeckerFraserPhotos, "A residential property on Waygreen Avenue in New Brighton. A note reads, 'Don't bother digging! Thanks anyway'. This family moved out after the February earthquakes, due to damage from liquefaction. The stone made the house heavy so it sank and suffered from silt and water creating mould and other problems inside the house".
Rebekah Rogers WEMO Photograph 047
Images, UC QuakeStudies
A photograph of a portaloo outside a residential property in Christchurch. After the 22 February 2011 earthquake, many houses had no running water and were forced to use chemical toilets or portaloos placed along the street. There is flooding and liquefaction on the street in the foreground. Liquefaction silt has been piled on the side of the road and a road cone placed in front.
Cyclic Undrained DSS Testing of Christchurch Sandy Silty Soils
Research papers, University of Canterbury Library
Earthquake-triggered soil liquefaction caused extensive damage and heavy economic losses in Christchurch during the 2010-2011 Canterbury earthquakes. The most severe manifestations of liquefaction were associated with the presence of natural deposits of clean sands and silty sands of fluvial origin. However, liquefaction resistance of fines-containing sands is commonly inferred from empirical relationships based on clean sands (i.e. sands with less than 5% fines). Hence, existing evaluation methods have poor accuracy when applied to silty sands. The liquefaction behaviour of Christchurch fines-containing (silty) sands is investigated through a series of Direct Simple Shear (DSS) tests. This type of test better resembles earthquake loading conditions in soil deposits compared to cyclic triaxial tests. Soil specimens are reconstituted in the laboratory with the water sedimentation technique. This preparation method yields soil fabrics similar to those encountered in fluvial soil deposits, which are common in the Christchurch area. Test results provide preliminary indications on how void ratio, relative density, preparation method and fines content influence the cyclic liquefaction behaviour of sand-silt mixtures depending on the properties of host sand and silt.
22 February Earthquake - Photograph 07
Images, UC QuakeStudies
Damage to River Road in Richmond. The road surface is badly cracked and slumped, and liquefaction silt covers part of the road. Two people in gumboots walk towards a barrier erected across the road using road cones and warning tape, and in the background the badly twisted Medway Street bridge can be seen. The photographer comments, "Longitudinal cracks indicate lateral movement as the land sagged towards the river. Near 373 River Rd, looking south-east towards Medway St. The Medway St bridge is visible in the background".
22 February Earthquake - Photograph 17
Images, UC QuakeStudies
Damage to the garden of a house in Richmond. Liquefaction is visible among the plants and on the driveway, and the driveway is badly cracked. The photographer comments, "These photos show our old house in River Rd. Water and silt have flattened the long grass in the back garden. The growth right of centre is suckers growing from the stump of a prunus tree we had felled last year. The section of fence between us and our neighbour fell down in the Sep 4 quake".
22 February Earthquake - Photograph 01
Images, UC QuakeStudies
Damage to River Road in Richmond. The road is badly cracked and slumped, and is closed off with a row of road cones tied with warning tape. The word "closed" has been spray painted on the road surface. The photographer comments, "These photos show our old house in River Rd and recovery work around Richmond and St Albans. River Rd was again subject to severe lateral spreading. The river is still grey with silt, the road is ripped and sunken, and power poles lean at random angles. The red car belonged to a postie, who had to come back with a tow truck to extricate the car from the hole that had opened underneath it. Looking along River Road to the north-east. Taken outside 79 Medway St".
WEMO ERT Set 4 - March 2011 - Photograph 11
Images, UC QuakeStudies
A photograph of a sign taped to a window. The sign includes a bullet pointed list of humorous observations about Christchurch following the February 2011 earthquake. The sign reads, "You know you're from Christchurch when: you use the term 'liquefaction' and 'seismic design' in casual conversation; digging a hole and shitting in your garden is no longer weird; your mayor describes the city as munted. If he means FUBARed, you agree; weaving through car size potholes on the street is no longer weird; a shower is heaven; you have a preference of which kind of silt you'd rather shovel, dry or wet; you see tanks...driving around town; you are always noting what you are under; due to frequent aftershocks during the night, you sleep like a baby - every 10 minutes you wake up and shit yourself".