On 22 February 2011, Christchurch experienced a severe earthquake resulting in much loss of lives, destruction … and liquefaction. and June 2011 earthquakes, this triggering had little-to-no consequence on the built environment in some areas where state-of-the-practice liquefaction procedures suggested severe ground failure and damaging effects should have been anticipated. 3 000 buildings in total were inspected, of that total 45% were deemed unsafe and were given a yellow or red sticker. Understanding liquefaction vulnerability helps guide decisions about future land use and designing infrastructure and homes to manage risk. On 22 February 2011, Christchurch experienced a severe earthquake resulting in much loss of lives, destruction … and liquefaction. Misko is part of the Quakecore Centre of Research Excellence. Christchurch is very familiar with liquefaction, with parts of the city experiencing significant liquefaction as a result of the 2010/2011 Canterbury Earthquakes. And then it takes hours or even days for the soil to get back to its equilibrium.”. The city of Christchurch experienced a major earthquake centred south of the city; severe damage and casualties occurred. CHRISTCHURCH, NEW ZEALAND - FEBRUARY 22: A Bus covered in building debris is seen on February 22, 2011 in Christchurch, New Zealand. Liquefaction, sand volcanoes and vast quantities of grey sandy silt became the scourge of Christchurch on February 22, bubbling out of the ground during … 23-06-2017. Two significant earthquakes, of M W 5.6 and M W 6.0 respectively, occurred in the Christchurch area on 13 June 2011. Liquefaction affected large areas of Christchurch because many suburbs are built on soft soils or sand. 2010-2011 Christchurch earthquakes is currently estimated to be in the range between 25 and 30 billion NZ dollars (or 15% to 18% of New Zealand’s GDP). Liquefaction Lab – Experiment with different scenarios to see how these impact liquefaction damage. On 22 February 2011, a magnitude 6.3 earthquake struck New Zealand’s Port Hills, sending a devastating shockwave through the country’s then second-most-populous city, Christchurch. While liquefaction can extend 15-20 metres deep, it’s most damaging consequences happen close to the ground surface, in the top five metres, says Misko. These earthquakes caused further damage in Christchurch and localised areas outside the city. “Probably it is the largest urban liquefaction on record in the world.”, Misko Cubrinovski, from the University of Canterbury's School of Engineering, studies liquefaction and lateral spreading on Oxford Terrace, after the 2011 Christchurch earthquake. The TV3 newsroom clock stopped at 12.51 pm when the earthquake struck. ISSMGE IT Administrator. Seismological Research Letters (2011) 82 (6): 893–904. Launching Date & Time: 15 April 2015 12:00 pm GMT. March 4, 2011 . Earthquake Maps – Observations from the 2010-2011 Canterbury earthquakes. High-rise apartments in central Wellington and earthquake strengthening issues. In 2010 and 2011, the city of Christchurch (New Zealand) was hit by a sequence of strong, local and devastating earthquakes. The suburb of Bexley beside the Avon River was badly hit by liquefaction in the 2011 Christchurch earthquakes. Videos. If playback doesn't begin shortly, try restarting your device. Christchurch, New Zealand, experienced four major earthquakes (Mw 5.9 to 7.1) since 4 September 2010 that triggered localized to widespread liquefaction. History. Following the Christchurch earthquakes of 2010-2011 Tonkin + Taylor performed a large amount of geotechnical analysis for Christchurch City Council (CCC) and Environment Canterbury (ECan) to better understand possible liquefaction-induced damage under future earthquake events. The Christchurch Earthquake (2011) Home; Causes ; Impacts ; Mitigation; References ; Casualties, Damages and Other Effects. Summer Shalders (Olliver) was trapped and badly injured in the collapse of the PGC Building. Liquefaction develops very quickly during strong earthquakes. This is my back yard after a 6.3 earthquake hit Christchurch on Monday 13 June 2011. 1999 Peugeot 406 7-Seat Estate 2.1TD, What we do during an earthquake and why it matters, Motorcyclist killed in Governors Bay crash, Mosque threats: Man granted interim name suppression, US polo player death: Jail after clothes hidden, Threatening to kill charge after Christchurch mosques threat, Driver ploughs through fence, abandons baby, Police investigate fraud claims against horse trainer. Title: Impacts of Liquefaction in the 2010-2011 Christchurch Earthquakes. Designing low damage buildings - Low-damage buildings don't just save lives in an earthquake, says Geoff Rodgers - they are designed to be resilient so they can stay in use. Widespread liquefaction in a team organized by the Earthquake Engineering Research Institute (EERI) and the Pacific Earthquake Engineering Research (PEER) Center investigated the effects of the Christchurch earthquake. NZ Herald's South Island head of news, Hamish Clark, remembers in vivid detail how the 2011 quake devastated Christchurch. “During the February 2011 earthquake,” says Misko, “it took two, three, four seconds to liquefy the loose soil in the eastern suburbs of Christchurch.”, “Then there is a period of a minute or two when that effect of liquefaction remains very strong during which large deformations and effects occur. Following the earthquakes, a lot of information has been collected about the city’s ground conditions. Liquefaction caused by the 2010–11 Canterbury earthquakes created large holes in streets around Christchurch. Earthquake Hazards. Damage from liquefaction may have been worsened by the high water table from a wet winter. Here’s a video a clever New Zealand man made to demonstrate liquefaction in action as he cleaned up the mess around his house: So why does this happen? Image courtesy of Mark Lincoln. Earthquake - What to do? Liquefaction is a process that temporarily turns firm ground into a liquid. 2011, Robinson et al. Major Faults in New Zealand. Misko helped map and study liquefaction in Christchurch after the 2011 earthquake. Liquefaction in the Christchurch red zone. Liquefaction at Wellington port's container terminal. The earthquake epicentre was near Lyttelton, just 10 kilometres south-east of Christchurch… These earthquakes were centred near Sumner, approximately 10km south-east of the CBD. Next. Widespread liquefaction in a team organized by the Earthquake Engineering Research Institute (EERI) and the Pacific Earthquake Engineering Research (PEER) Center investigated the effects of the Christchurch earthquake. The 6.3 magnitude earthquake - an aftershock of the 7.1 magnitude quake on September 4 - struck 20km southeast of Christchurch at around 1pm local time, with initial reports suggesting damage and fatalities far exceeding the initial quake. Monitoring Earthquakes. The liquefaction affected 60,000 residential buildings (properties), large number of CBD buildings, and the lifelines and infrastructure over approximately one third of the city area. The Christchurch suburb of Bexley is flooded with silt and water forced up through the weakened ground by liquefaction following the 22 February 2011 earthquake. Evidence of liquefaction in Christchurch, New Zealand . While liquefaction can extend 15-20 metres deep, it’s most damaging consequences happen close to the ground surface, in the top five metres, says Misko. Some have probably told their stories many times to friends and family. Oggcast (Vorbis). Misko says that Christchurch is still experiencing the significant consequences of liquefaction ten years after it occurred. He says this finding explained why some areas of the city that contained liquefiable soils sustained much less damage than expected. Key Words: Christchurch earthquake, earthquake damage, liquefaction, residential buildings, pipe networks INTRODUCTION In the period between September 2010 and December 2011, Christchurch (New Zealand) and its surroundings were hit by a series of strong earthquakes including six significant events, all generated Virtual Tours. Gallery. New Zealand Earthquakes. Misko is interested in how buildings and other structures such as pipes respond to shaking and liquefaction. Preparing for the next big quake - University of Canterbury earthquake engineer Brendon Bradley says we can’t predict when and where earthquakes will occur, but “we do have probabilistic models that tell us the likelihood that certain faults are going to rupture over a certain period of time.”. Most earthquake damage is caused by ground shaking. Christchurch during the earthquake series of 2010 to 2011. Liquefaction in New Zealand . Disaster law - John Hopkins and Toni Collins explain disaster law and shortcomings in New Zealand's legal system highlighted by the Canterbury earthquakes. Story. Photo: University of Canterbury, Subscribe to Our Changing World for free on Apple Podcasts, Spotify, Stitcher, iHeartRADIO, Google Podcasts, RadioPublic or wherever you listen to your podcasts. To embed this content on your own webpage, cut and paste the following: , for easy access to all your favourite programmes, Podcast (MP3) Misko Cubrinovski, Jonathan D. Bray, Merrick Taylor, Simona Giorgini, Brendon Bradley, Liam Wotherspoon, Joshua Zupan; Soil Liquefaction Effects in the Central Business District during the February 2011 Christchurch Earthquake. Home / Learning / Science Topics / Earthquakes / Gallery / Liquefaction Damage, Christchurch, February 2011. damaged by liquefaction during the 2011 Christchurch, New Zealand, earthquake. On Tuesday 22 February 2011 at 12.51 p.m. Christchurch was badly damaged by a magnitude 6.3 earthquake, which killed 185 people and injured several thousand. After each major earthquake, comprehensive field investigations and inspections were conducted to document the liquefaction-induced land damage, lateral spreading displacements and their impacts on buildings and infrastructure. Vulnerability Map – A map showing how liquefaction vulnerability varies across Christchurch. Lesson Plans. Most notable of these wase th 4 September event, at Ms7.1 and MM7 (MM as observed in the Christchurch CBD) and A major earthquake occurred in Christchurch, New Zealand, on Tuesday 22 February 2011 at 12:51 p.m. local time (23:51 UTC, 21 February). Presenter: Prof. Misko Cubrinovski. Misko helped map and study liquefaction in Christchurch after the 2011 earthquake. This paper summarizes the characteristics of liquefaction and discusses its impacts on residential houses and buried pipe networks. Photo: AFP. Soils that are susceptible to liquefaction are generally sandy, silty or gravelly, and have to be saturated with water. Lateral spreading happens when liquefaction stretches and tears the ground.