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BeckerFraserPhotos April 2011 photograph 057
Images, UC QuakeStudies
A view over cordon fencing towards the damaged Ground Culinary Centre and cafe. Bricks have crumbled from the walls and remain piled up on the footpath.
Analysis of liquefaction characteristics at Christchurch strong motion sta…
Research papers, University of Canterbury Library
The city of Christchurch and its surrounds experienced widespread damage due to soil liquefaction induced by seismic shaking during the Canterbury earthquake sequence that began in September 2010 with the Mw7.1 Darfield earthquake. Prior to the start of this sequence, the city had a large network of strong motion stations (SMSs) installed, which were able to record a vast database of strong ground motions. This paper uses this database of strong ground motion recordings, observations of liquefaction manifestation at the ground surface, and data from a recently completed extensive geotechnical site investigation program at each SMS to assess a range of liquefaction evaluation procedures at the four SMSs in the Christchurch Central Business District (CBD). In general, the characteristics of the accelerograms recorded at each SMS correlated well with the liquefaction evaluation procedures, with low liquefaction factors of safety predicted at sites with clear liquefaction identifiers in the ground motions. However, at sites that likely liquefied at depth (as indicated by evaluation procedures and/or inferred from the characteristics of the recorded surface accelerograms), the presence of a non-liquefiable crust layer at many of the SMS locations prevented the manifestation of any surface effects. Because of this, there was not a good correlation between surface manifestation and two surface manifestation indices, the Liquefaction Potential Index (LPI) and the Liquefaction Severity Number (LSN).
Strong Ground Motion Simulations for Dunedin: First Steps using the SCEC B…
Research papers, University of Canterbury Library
Our poster will present on-going QuakeCoRE-founded work on strong motion seismology for Dunedin-Mosgiel area, focusing on ground motion simulations for Dunedin Central Business District (CBD). Source modelling and ground motion simulations are being carried out using the SCEC (Southern California Earthquakes Center) Broad Band simulation Platform (BBP). The platform computes broadband (0-10 Hz) seismograms for earthquakes and was first implemented at the University of Otago in 2016. As large earthquakes has not been experienced in Dunedin in the time of period of instrumental recording, user-specified scenario simulations are of great value. The Akatore Fault, the most active fault in Otago and closest major fault to Dunedin, is the source focused on in the present study. Simulations for various Akatore Fault source scenarios are run and presented. Path and site effects are key components considered in the simulation process. A 1D shear wave velocity profile is required by SCEC BBP, and this is being generated to represent the Akatore-to-CBD path and site within the BBP. A 3D shear velocity model, with high resolution within Dunedin CBD, is being developed in parallel with this study (see Sangster et al. poster). This model will be the basis for developing a 3D shear wave velocity model for greater Dunedin-Mosgiel area for future ground motion simulations, using Canterbury software (currently under development).
BeckerFraserPhotos April 2011 photograph 081
Images, UC QuakeStudies
Damage to the Christchurch School of Music building. The gable on the building has crumbled and bricks can be seen along the ground.
BeckerFraserPhotos October 2011 photograph 383
Images, UC QuakeStudies
The ground floor of the Central Library on Gloucester Street. Books have fallen off the shelves and are in piles in the aisles.
Paul and Sam Corliss's Street Art Photograph (2013:05:04 13:20:07)
Images, UC QuakeStudies
A photograph of an advertising image in the window of Sugar Hair and Beauty, on the ground floor of the Inland Revenue Building.
Photograph of the Cranmer Centre, 40 Armagh Street (327)
Images, UC QuakeStudies
A photograph of a finial from the top of one of the spires of the Cranmer Centre, removed and placed on the ground in front.
Photograph of the Cranmer Centre, 40 Armagh Street (329)
Images, UC QuakeStudies
A photograph of a finial from the top of one of the spires of the Cranmer Centre, removed and placed on the ground in front.
Photograph of the Cranmer Centre, 40 Armagh Street (324)
Images, UC QuakeStudies
A photograph of a finial from the top of one of the spires of the Cranmer Centre, removed and placed on the ground in front.
Photograph of the Cranmer Centre, 40 Armagh Street (321)
Images, UC QuakeStudies
A photograph of a finial from the top of one of the spires of the Cranmer Centre, removed and placed on the ground in front.
Photograph of the Cranmer Centre, 40 Armagh Street (319)
Images, UC QuakeStudies
A photograph of a finial from the top of one of the spires of the Cranmer Centre, removed and placed on the ground in front.
Photograph of the Cranmer Centre, 40 Armagh Street (335)
Images, UC QuakeStudies
A photograph of a finial from the top of one of the spires of the Cranmer Centre, removed and placed on the ground in front.
Greendale Land Survey Photograph 18
Images, UC QuakeStudies
A photograph of University of Canterbury Geology staff and students using ground penetrating radar (GPR) to survey land on the Greendale fault line. From left: Thomas Wilson, Zach Whitman and Matt Cockcroft.
Northern Outlook Image: Jinny Reynolds 2010:09:24 00:42:20
Images, UC QuakeStudies
Photograph captioned by Fairfax, "Shaky ground: Kaiapoi business woman Wendy Quigley uses her skills to find a way to fundraise for earthquake-stricken Kaiapoi".
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.
Greendale Land Survey Photograph 17
Images, UC QuakeStudies
A photograph of University of Canterbury Geology staff and students using ground penetrating radar (GPR) to survey land on the Greendale faultline. From left: Thomas Wilson, Dewiyani Bealing, Zach Whitman and Matt Cockcroft.
Photograph of the Cranmer Centre, 40 Armagh Street (326)
Images, UC QuakeStudies
A photograph of a finial from the top of one of the spires of the Cranmer Centre, removed and placed on the ground in front.
Photograph of the Cranmer Centre, 40 Armagh Street (320)
Images, UC QuakeStudies
A photograph of a finial from the top of one of the spires of the Cranmer Centre, removed and placed on the ground in front.
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.
Photograph of the Cranmer Centre, 40 Armagh Street (322)
Images, UC QuakeStudies
A photograph of a finial from the top of one of the spires of the Cranmer Centre, removed and placed on the ground in front.
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.
Natalie Kerschner WEMO Photograph 069
Images, UC QuakeStudies
A photograph of a damaged retaining wall of a garden. The wall has collapsed and is lying on the ground. Two cracks can be seen in the middle.
The Earthquake Rattle
Images, UC QuakeStudies
A digitally manipulated photograph of a shop security shutter. The photographer comments, "Sometimes before you feel the ground rolling any metal shutters around start their rattling noises as if someone is shaking them".
Mark Lincoln Photograph 004
Images, UC QuakeStudies
People walking a dog on Avonside Drive step over a hump in the footpath caused by the buckling of the ground. Flooding and liquefaction can be seen on the road surface in the distance.
Mark Lincoln Photograph 099
Images, UC QuakeStudies
A partially-demolished brick building has the word "red" painted on its wall. Liquefaction surrounds piles of bricks on the ground in front. The photographer comments, "I guess they ran out of red stickers".