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Christchurch Press Image: David Hallett 2010:09:12 05:33:05
Images, UC QuakeStudies
Photograph captioned by Fairfax, "Maarten Schaap with his campervan which he and his family live in after their house was damaged in the quake, he lives at the end of the fault line where all the aftershocks are located".
Experts say larger earthquake could hit South Island
Audio, Radio New Zealand
Geologists say the South Island is likely to be hit with another, even larger, earthquake sometime in the next 50 years. Teams of earthquake experts are in Canterbury studying the previously undetected fault responsible for Saturday's 7.1 magnitude earthquake and dozens of aftershocks.
Earthquake Hazard Assessment for Waimakariri District
Articles, UC QuakeStudies
This report describes the earthquake hazard in Waimakariri district and gives details of historic earthquakes. It includes district-scale (1:250,000) active fault, ground shaking zone, liquefaction and landslide susceptibility maps. See Object Overview for background and usage information.
IMG_2222
Images, eqnz.chch.2010
Toppled grain silos on the outskirts of Darfield near the epicentre of the magnitude 7,1 earthquake that struck on Saturday 4 September 2010.
IMG_2230
Images, eqnz.chch.2010
Toppled grain silos on the outskirts of Darfield near the epicentre of the magnitude 7,1 earthquake that struck on Saturday 4 September 2010.
IMG_2224
Images, eqnz.chch.2010
Toppled grain silos on the outskirts of Darfield near the epicentre of the magnitude 7,1 earthquake that struck on Saturday 4 September 2010.
IMG_2226
Images, eqnz.chch.2010
Toppled grain silos on the outskirts of Darfield near the epicentre of the magnitude 7,1 earthquake that struck on Saturday 4 September 2010.
MVI_2430
Videos, eqnz.chch.2010
At Greendale Faultline on Highfield Road in mid-Canterbury, where the magnitude 7.1 earthquake on 4 September 2010 originated.
IMG_2233
Images, eqnz.chch.2010
Heaving and subsidence on the faultline left scars where the magnitude 7.1 earthquake on Saturday 4 September 2010 originated.
IMG_2223
Images, eqnz.chch.2010
Toppled grain silos on the outskirts of Darfield near the epicentre of the magnitude 7,1 earthquake that struck on Saturday 4 September 2010.
IMG_2221
Images, eqnz.chch.2010
Toppled grain silos on the outskirts of Darfield near the epicentre of the magnitude 7,1 earthquake that struck on Saturday 4 September 2010.
IMG_2229
Images, eqnz.chch.2010
Toppled grain silos on the outskirts of Darfield near the epicentre of the magnitude 7,1 earthquake that struck on Saturday 4 September 2010.
IMG_2220
Images, eqnz.chch.2010
Toppled grain silos on the outskirts of Darfield near the epicentre of the magnitude 7,1 earthquake that struck on Saturday 4 September 2010.
IMG_2246
Images, eqnz.chch.2010
The latest (but temporary) tourist attraction in mid-Canterbury! This was the previously unknown faultline where the Saturday 4 September 2010 earthquake originated.
MVI_2425
Videos, eqnz.chch.2010
At Greendale Faultline on Highfield Road in mid-Canterbury, where the magnitude 7.1 earthquake on 4 September 2010 originated.
MVI_2424
Videos, eqnz.chch.2010
At Greendale Faultline on Highfield Road in mid-Canterbury, where the magnitude 7.1 earthquake on 4 September 2010 originated.
IMG_2227
Images, eqnz.chch.2010
Toppled grain silos on the outskirts of Darfield near the epicentre of the magnitude 7,1 earthquake that struck on Saturday 4 September 2010.
IMG_2257
Images, eqnz.chch.2010
Tension cracks at least 300 mm deep, on the previously unknown faultline from which the Saturday 4 September 2010 earthquake originated.
IMG_2228
Images, eqnz.chch.2010
Toppled grain silos on the outskirts of Darfield near the epicentre of the magnitude 7,1 earthquake that struck on Saturday 4 September 2010.
Destruction
Images, eqnz.chch.2010
Rolleston/Burnham, South Island, NZ This used to be a perfectly straight and flat road!
IMG_2219
Images, eqnz.chch.2010
On the way to Darfield to locate the faultline where the tectonic plates slipped, causing the magnitude 7.1 earthquake on Saturday 4 September 2010.
Christchurch Press Image: Carys Monteath 2010:09:13 09:38:55
Images, UC QuakeStudies
Photograph captioned by Fairfax, "New Zealand's Governor-General Anand Satyanand and his wife Susan Satyanand visited sites around earthquake-stricken Canterbury today. Satyanand at the epicentre near Darfield where the new fault line can be clearly seen across a rural paddock".
Christchurch Press Image: Carys Monteath 2010:09:13 09:38:53
Images, UC QuakeStudies
Photograph captioned by Fairfax, "New Zealand's Governor-General Anand Satyanand and his wife Susan Satyanand visited sites around earthquake stricken Canterbury today. Satyanand at the epicentre near Darfield where the new fault line can be clearly seen across a rural paddock".
Christchurch Press Image: Carys Monteath 2010:09:13 09:39:56
Images, UC QuakeStudies
Photograph captioned by Fairfax, "New Zealand's Governor-General Anand Satyanand and his wife Susan Satyanand visited sites around earthquake stricken Canterbury today. Satyanand at the epicentre near Darfield where the new fault line can be clearly seen across a rural paddock".
Christchurch Press Image: Carys Monteath 2010:09:13 09:37:35
Images, UC QuakeStudies
Photograph captioned by Fairfax, "New Zealand's Governor-General Anand Satyanand and his wife Susan Satyanand visited sites around earthquake stricken Canterbury today. Satyanand at the epicentre near Darfield where the new fault line can be clearly seen across a rural paddock".
Top Stories for Friday 10 February 2012
Audio, Radio New Zealand
After a damning report into the CTV building, how many other Christchurch buildings had faults when the earthquake struck? Police investigate the tragic death of a five year old and when so many businesses are struggling, how did the country's big banks increase profits by a quarter?
IMG_2245
Images, eqnz.chch.2010
Looking across the faultline where the Saturday 4 September 2010 magnitude 7.1 earthquake originated. Note how much the previously straight fence is now out of alignment.
IMG_2241
Images, eqnz.chch.2010
Looking across the faultline where the Saturday 4 September 2010 magnitude 7.1 earthquake originated. Note how much the previously straight fence is now out of alignment.
Liquefaction features produced by the 2010-2011 Canterbury earthquake sequ…
Research Papers, Lincoln University
Liquefaction features and the geologic environment in which they formed were carefully studied at two sites near Lincoln in southwest Christchurch. We undertook geomorphic mapping, excavated trenches, and obtained hand cores in areas with surficial evidence for liquefaction and areas where no surficial evidence for liquefaction was present at two sites (Hardwick and Marchand). The liquefaction features identified include (1) sand blows (singular and aligned along linear fissures), (2) blisters or injections of subhorizontal dikes into the topsoil, (3) dikes related to the blows and blisters, and (4) a collapse structure. The spatial distribution of these surface liquefaction features correlates strongly with the ridges of scroll bars in meander settings. In addition, we discovered paleoliquefaction features, including several dikes and a sand blow, in excavations at the sites of modern liquefaction. The paleoliquefaction event at the Hardwick site is dated at A.D. 908-1336, and the one at the Marchand site is dated at A.D. 1017-1840 (95% confidence intervals of probability density functions obtained by Bayesian analysis). If both events are the same, given proximity of the sites, the time of the event is A.D. 1019-1337. If they are not, the one at the Marchand site could have been much younger. Taking into account a preliminary liquefaction-triggering threshold of equivalent peak ground acceleration for an Mw 7.5 event (PGA7:5) of 0:07g, existing magnitude-bounded relations for paleoliquefaction, and the timing of the paleoearthquakes and the potential PGA7:5 estimated for regional faults, we propose that the Porters Pass fault, Alpine fault, or the subduction zone faults are the most likely sources that could have triggered liquefaction at the study sites. There are other nearby regional faults that may have been the source, but there is no paleoseismic data with which to make the temporal link.
Minimising Public Health Risk from Human Waste after a large Wellington Fa…
Research papers, University of Canterbury Library
The greater Wellington region, New Zealand, is highly vulnerable to large earthquakes. While attention has been paid to the consequences of earthquake damage to road, electricity and water supply networks, the consequences of wastewater network damage for public health, environmental health and habitability of homes remain largely unknown for Wellington City. The Canterbury and Kaikōura earthquakes have highlighted the vulnerability of sewerage systems to disruption during a disaster. Management of human waste is one of the critical components of disaster planning to reduce faecal-oral transmission of disease and exposure to disease-bearing vectors. In Canterbury and Kaikōura, emergency sanitation involved a combination of Port-a-loos, chemical toilets and backyard long-drops. While many lessons may be learned from experiences in Canterbury earthquakes, it is important to note that isolation is likely to be a much greater factor for Wellington households, compared to Christchurch, due to the potential for widespread landslides in hill suburbs affecting road access. This in turn implies that human waste may have to be managed onsite, as options such as chemical toilets and Port-a-loos rely completely on road access for delivering chemicals and collecting waste. While some progress has been made on options such as emergency composting toilets, significant knowledge gaps remain on how to safely manage waste onsite. In order to bridge these gaps, laboratory tests will be conducted through the second half of 2019 to assess the pathogen die-off rates in the composting toilet system with variables being the type of carbon bulking material and the addition of a Bokashi composting activator.