canterbury earthquake sequence

Time-lapse visualisations of the February 22 2011 and September 4 2010 earthquakes and their aftershocks can also be viewed. EQC received over 470,000 claims, more than 15,000 families lost their homes, and repair costs were estimated at over $40 billion. November 3, 2014 | Christoph Grützner in Paper. The three M≥6.0 aftershocks included the devastating M6.3 Christchurch earthquake on 22 February 2011, which resulted in 185 deaths and extensive damage. 185 people lost their lives, over 7000 were injured. Kate was on the ground for Tonkin + Taylor mapping land damage and providing critical engineering advice for the Earthquake Commission and NZ Government from the first aftershock. The Canterbury earthquake sequence is an on-going earthquake sequence, which started with the M7.1 Darfield earthquake on 4 September 2010. We also searched for large aftershocks within 1.1 magnitude units of the main shock that occurred at least as late and far away as the Christchurch earthquake relative to the Darfield earthquake. 15,000 families lost their homes and 8,000 families were permanently displaced. In the other dataset there were another couple of examples. The 6.3-magnitude earthquake may have been an aftershock of the 7.1-magnitude 4 September 2010 Canterbury earthquake.New Zealand's GNS Science has stated that the earthquake was part of the aftershock sequence that has been occurring since the September magnitude-7.1 quake, however a seismologist from Geoscience Australia considers it a separate event given … Between September 2010 and December 2011, NZ's second largest city (pop. The Canterbury earthquake sequence that began in September 2010 caused significant land movement that affected property boundaries and the survey control network throughout the region. The first earthquake in September 2010 was the moment the ‘rubber hit the road’ for geotechnical engineer, Mike Jacka. The sequence began in September 2010, followed by a significant aftershock in February 2011 that caused an unprecedented and sustained reduction in tourism arrivals to the city of Christchurch and the wider region. The most destructive of these was the 22 February 2011 earthquake, centered close to Christchurch, in which 185 people died. For Kate, there's one clear, key lesson to learn from the Christchurch earthquakes. YOU NEED JAVASCRIPT TO RUN THIS SITE. We also identified further work required to better understand what effect the deficiencies of the real-time earthquake data have on the real-time forecasting models. Photo / Christchurch Star It pays respect to those who lost their lives, those who were seriously injured and survivors. 4 minutes to read . In summary, the probability for one or more M≥ 6.0 earthquakes in the 50 years starting in September 2012 ranges from 50% to 93% depending on the model and model parameters. Due to on-going aftershock activity and the possibility of other triggered moderate to large earthquakes, the New Zealand National Seismic Hazard model was expected to grossly underestimate the level of ground shaking for the Canterbury region for the coming decades. There was limited experience in dealing with the complexities of such an … The Earthquake Commission received over 470,000 insurance claims. Search … To investigate how unusual late and large aftershocks are as observed in the Canterbury sequence, we used two global earthquake catalogues. Depending on the search criteria, between 6 and 13 % of main shocks in the more complete catalogue had 3 or more aftershocks within 1.1 magnitude units, as observed in the Canterbury sequence. Please get in touch. In the final analysis, it became clear that the most widespread and severe affects to infrastructure and land had been caused by repeated liquefaction events and the damage each one induced when millions of tonnes of silt and water spewed to the earth's surface. On 4 September 2010, a powerful earthquake struck near Darfield in Canterbury. The tourism industry suffered significant losses as a consequence of the Canterbury earthquake sequence. In our most complete dataset and with the preferred search criteria, 2% of large earthquake fulfil these criteria. He had done his Master’s degree at Canterbury University in earthquake engineering, specifically, liquefaction potential for Christchurch. We slightly changed focus from deriving aftershock parameters from the global catalogue, to modelling aftershocks in the Canterbury sequence to provide bounds for earthquake rates in the Canterbury region for the coming years and decades. Investigate how unusual late and large aftershocks are as observed in the Canterbury sequence. M C Gerstenberger, GNS Science (EQC funded project 12/634). The Canterbury Earthquake Sequence – Recovery from Disaster. Annabel Begg. The Canterbury earthquake sequence is an on-going earthquake sequence, which started with the M7.1 Darfield earthquake on 4 September 2010. This confirms that while the Christchurch earthquake occurred with a time delay of 171 days and 42 km from the Darfield epicentre, this is not too unusual in global earthquake occurrences. All of the earthquakes occurred on previously The Pegasus Bay aftershock sequence is the most recent aftershock sequence of the 2010 September 3 UTC moment magnitude (M w) 7.1 Darfield earthquake in the Canterbury region of New Zealand.The Pegasus Bay aftershock sequence began on 2011 December 23 UTC with three events of M w 5.4–5.9 located in the offshore region of Pegasus … The paper is special in many ways: more. Our project set out to investigate the Canterbury sequence in the context of global earthquake statistics. Tonkin + Taylor's Operations Manager for the Christchurch Earthquake Recovery Project, Shamus Wallace and his wife Lisa had two children after the earthquake sequence began. 1 earthquake within a radius of 150km of central Christchurch over 24 hours. The retrospective simulations are consistent with the observations. Some damaging aftershocks followed the main event, the strongest of which was a magnitude 6.3 shock known as the Christchurch earthquakethat occurred nearly six months later on 22 February 2011. We identified further work required to better understand what effect the deficiencies of the real-time earthquake data have on the real‑time forecasting models. The repair and rebuilding of Canterbury continues and is expected to top $40 billion. 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