Two earthquake scientists say the chance of a magnitude six aftershock hitting the Canterbury region is decreasing day by day and is now unlikely. A Victoria University professor in geophysics and a GNS seismologist have put into perspective the weekend's devastating earthquake at a lecture in Wellington.
A snapshot from GPS Boomerang's SmartBird flight over the Christchurch red zone on 23 December 2012, looking over the Town Hall and Victoria Square with the site of the Crowne Plaza Hotel visible in the bottom left, GapFiller's Pallet Pavillion now in the space.
The statue of Captain Cook looks over an empty Victoria Square with autumn leaves lying around. This used to be a very tidy and busy area, but is now nearly all fenced off. Pedestrian access to this section was established about five or six months ago.
A video of a press conference with Anglican Bishop Victoria Matthews and Dean Peter Beck, about the interim plans for the earthquake-damaged ChristChurch Cathedral. In the press conference Matthews announces that the Cathedral will be deconsecrated, that parts of it will be demolished, and that the rest will be made safe. These measures will allow the recovery of artefacts and heritage items from the building.
Knox Church, Cnr Bealey Ave & Victoria St (08.03.2011) City Christchurch Canterbury New Zealand © 2011 Phil Le Cren Photo Taken With: Canon EOS 1000D + Canon EF/EF-S lenses + 10.1 effective megapixels + 2.5-inch TFT color LCD monitor + Eye-level pentamirror SLR + Live View shooting. + EOS Built-in Sensor cleanin...
Knox Church, Cnr Bealey Ave & Victoria St (08.03.2011) City Christchurch Canterbury New Zealand © 2011 Phil Le Cren Photo Taken With: Canon EOS 1000D + Canon EF/EF-S lenses + 10.1 effective megapixels + 2.5-inch TFT color LCD monitor + Eye-level pentamirror SLR + Live View shooting. + EOS Built-in Sensor cleanin...
Knox Church, Cnr Bealey Ave & Victoria St (08.03.2011) City Christchurch Canterbury New Zealand © 2011 Phil Le Cren Photo Taken With: Canon EOS 1000D + Canon EF/EF-S lenses + 10.1 effective megapixels + 2.5-inch TFT color LCD monitor + Eye-level pentamirror SLR + Live View shooting. + EOS Built-in Sensor cleanin...
A photograph of the badly-damaged Canterbury Provincial Council buildings, taken from Durham Street.
A photograph of the interior of Smash Palace. A bus parked in the centre of the site is being used as a bar, and tarpaulins provide a roof over a seating area.
A photograph of a small wooden hut at the entrance to the Ministry of Justice car parks.
A photograph of a paste-up on the wall of the earthquake-damaged Knox Church. The paste-up depicts a bandaid with a speech bubble reading, "I'll kiss it better".
A photograph of a paste-up on the wall of the earthquake-damaged Knox Church. The paste-up depicts a bandaid with a speech bubble reading, "I'll kiss it better".
A photograph of a paste-up on the wall of the earthquake-damaged Knox Church. The paste-up depicts a bandaid with a speech bubble reading, "I'll kiss it better".
A photograph of a paste-up on the wall of the earthquake-damaged Knox Church. The paste-up depicts a bandaid with a speech bubble reading, "I'll kiss it better".
A photograph of a small wooden hut at the entrance to the Ministry of Justice car parks.
A photograph of a small wooden hut at the entrance to the Ministry of Justice car parks.
A photograph of a small wooden hut at the entrance to the Ministry of Justice car parks.
A photograph of a small wooden hut at the entrance to the Ministry of Justice car parks.
A photograph of the interior of Smash Palace. A bus parked in the centre of the site is being used as a bar.
A PDF copy of pages 198-199 of the book Christchurch: The Transitional City Pt IV. The pages document the transitional project 'Smash Palace'. Photos: Irene Boles
A photograph of the interior of Smash Palace. A bus parked in the centre of the site is being used as a bar.
A photograph of a small wooden hut at the entrance to the Ministry of Justice car parks.
A photograph of a small wooden hut at the entrance to the Ministry of Justice car parks.
A PDF copy of pages 242-243 of the book Christchurch: The Transitional City Pt IV. The pages document the transitional project 'Ministry of Justice Gate Keepers'. Photos: Douglas Horrell
An aerial photograph captioned by BeckerFraserPhotos, "Victoria Square is at the centre of this picture with its green lawns and trees. The bare patch of earth in front s the demolition sites of the Allan McLean building, the Oxford on Avon, and Plunket House. The contract to demolish the Crowne Plaza Hotel has been let, while the fate of the Town Hall is still undecided. The Convention Centre is coming down. On the very bottom, slightly to the right is the Medlab building which is also to be demolished. In the bottom left corner is the PWC building which is also to be demolished".
A sign outside the Chinwag Eathai restaurant on Victoria Street reads "To all our valued customers. We are sorry to inform you as of Tuesday 17th January 2012 our building has been red stickered. Don't worry we will be back at a new location!! Yet to be confirmed".
Demolition of Robertson's Bakery building, Victoria Street, Christchurch. The Chandelier rescue ... Walking into work I saw the building I always wanted to buy (and run as a bookshop, perfumery, shoe shop) - the old Robertson's Bakery getting demolished. But the bigass digger gently reached into the wreckage and saved this chandelier, bringing...
© 2018 The Authors. Published by Elsevier Ltd. Governance is understood to have considerable influence on the success of recoveries following a natural disaster. What constitutes good governance and successful recovery in these circumstances? This question is discussed in relation to two recent recovery processes. Sri Lanka has, for all intents and purposes, recovered from the tsunami that struck there and other parts of southern Asia in 2004. Christchurch, New Zealand was devastated by a sequence of earthquakes during 2010 and 2011 and recovery there is now well under way. The paper discusses the governance structures that have guided these two recoveries. While it is understood that the effects of disasters could potentially be life long and recovery from them complex, compatibility of the process and outcomes in relation to cultural norms and the critical issue of housing are the key issues discussed across the two cases.
©2019. American Geophysical Union. All Rights Reserved. Earthquakes have been inferred to induce hydrological changes in aquifers on the basis of either changes to well water-levels or tidal behavior, but the relationship between these changes remains unclear. Here, changes in tidal behavior and water-levels are quantified using a hydrological network monitoring gravel aquifers in Canterbury, New Zealand, in response to nine earthquakes (of magnitudes M w 5.4 to 7.8) that occurred between 2008 and 2015. Of the 161 wells analyzed, only 35 contain water-level fluctuations associated with “Earth + Ocean” (7) or “Ocean” (28) tides. Permeability reduction manifest as changes in tidal behavior and increased water-levels in the near field of the Canterbury earthquake sequence of 2010–2011 support the hypothesis of shear-induced consolidation. However, tidal behavior and water-level changes rarely occurred simultaneously (~2%). Water-level changes that occurred with no change in tidal behavior reequilibrated at a new postseismic level more quickly (on timescales of ~50 min) than when a change in tidal behavior occurred (~240 min to 10 days). Water-level changes were more than likely to occur above a peak dynamic stress of ~50 kPa and were more than likely to not occur below ~10 kPa. The minimum peak dynamic stress required for a tidal behavior change to occur was ~0.2 to 100 kPa.
Measurement of basement seismic resonance frequencies can elucidate shallow velocity structure, an important factor in earthquake hazard estimation. Ambient noise cross correlation, which is well-suited to studying shallow earth structure, is commonly used to analyze fundamental-mode Rayleigh waves and, increasingly, Love waves. Here we show via multicomponent ambient noise cross correlation that the basement resonance frequency in the Canterbury region of New Zealand can be straightforwardly determined based on the horizontal to vertical amplitude ratio (H/V ratio) of the first higher-mode Rayleigh waves. At periods of 1-3 s, the first higher-mode is evident on the radial-radial cross-correlation functions but almost absent in the vertical-vertical cross-correlation functions, implying longitudinal motion and a high H/V ratio. A one-dimensional regional velocity model incorporating a ~ 1.5 km-thick sedimentary layer fits both the observed H/V ratio and Rayleigh wave group velocity. Similar analysis may enable resonance characteristics of other sedimentary basins to be determined. © 2013. American Geophysical Union. All Rights Reserved.