At this point the surfaces of the two plates making up the South Islands alpine fault meet. Copyright © 2020 MediaWorks TV - All Rights Reserved, By subscribing you agree to our Terms of Access and Privacy Policy. Based on general equilibrium theory adapted for business disruption response and equilibrium-seeking dynamics. Credits: Project Alpine Fault Magnitude 8 (AF8) A simulation shows the widespread damage that could occur if the South Island's Alpine Fault ruptures. The Alpine Fault is a geological fault that runs almost the entire length of New Zealand's South Island and forms the boundary between the Pacific Plate and the Indo-Australian Plate. It has ruptured four times in the last 900 years, resulting in earthquakes of around magnitude 8, and is now considered highly probable to go again in the next 50 years. Register Warranty. In this preliminary study, we chose conservative values for all source parameters based on our current understanding of large crustal earthquake source mechanics. / Earthquakes This high PGA is likely due not only to non-linear soil response not accounted for in this study but also to the presence of a modelled asperity nearby and to strong directivity effects, neither of which are accounted for in current GMPE modelling for New Zealand. Find a local Authorised Alpine Specialist Dealer in your area. The model is 500 by 12 km long, striking 52 degrees, dipping 45 degrees and with a rake angle of 173 degrees. Alpine Fault heterogeneous slip model scenario employing RUPGEN toolkit developed by Mai et al. à partir de 57 000 € CONFIGUREZ CETTE VERSION. As such, they account for path effects incurred during propagation of the waves from the earthquake to the receiver site. www.resorgs.org.nz. A simulation shows the widespread damage that could occur if the South Island's Alpine Fault ruptures. Credits: Project Alpine Fault Magnitude 8 (AF8). In the simulation, the inset in (C) shows the fault geometry and injection. Synthetic ground motions are used as a forcing boundary to drive lake water motions by further developing a tsunami simulation model—COMCOT—and coupling it with earthquake simulation model outputs. However the modelled PGA from an Alpine Fault event in Hokitika is 59%g, twice the level expected from a GMPE for a PGA of 27%g. She says the more people prepare for such an event the easier life will be after it happens. Large earthquakes (magnitude ≥ 7.0) are rare, especially along slow-slipping plate boundaries. / Alpine Fault and Hope Fault modelling. The New Zealand Journal of Geology and Geophysics has recently dedicated an entire issue to the South Island's Alpine Fault, which is now overdue a massive quake. Project AF8 Steering Group chair Angus McKay says the next research focus is creating a more in depth plan of how to help those people who will be worse affected. Search. The Alpine Fault ruptures roughly every 300 years. "There's an inevitability about the next Alpine Fault earthquake," Dr Caroline Orchiston, a scientist and guest editor on the issue, told Breakfast. The synthetic records show that ground motion accelerations in Greymouth and Hokitika are expected to exceed 20%g and 50%g respectively during an Alpine fault earthquake, while ground motions in Christchurch are expected to be moderate, with peak ground accelerations (PGAs) of 8%g expected from an Alpine event and 6%g from a Hope fault event. Approximate rupture dates are 1717AD, 1620 AD, 1450 AD, and 1100 AD. - fault line photos et images de collection. In general the response spectra from the simulations exceed the spectra derived from GMPE except for spectral periods between 0.5 and 1.2 seconds. / Ground motion simulations Pure. Famous Awatere active fault line on north west side of Awatere Valley, Branch of great alpine fault, Aerial, New Zealand. This proposed model already published in Holden and Kaiser (2016) satisfies the conditions required by the source panel. Ensure your Alpine product is covered by our limited warranty* Register. Configurez votre Alpine selon vos préférences en sélectionnant parmi l'ensemble des couleurs, équipements et accessoires proposés. Consequential severe damage to lifelines, including the main transportation corridors, is also predicted. In this study, instead of using GMPE, we carry out synthetic broadband simulations to derive synthetic strong-motion records. The Alpine Fault. (2002). Bienvenue sur le site officiel Alpine Cars. Réservez votre essai de l’A110. Video simulation shows 12m-high tsunami battering New Zealand coast 5 Mar, 2018 10:31 PM 3 minutes to read Animation showing the tsunami threat posed by … 1 / 5. At present, the response spectra from a great scenario earthquake from the Alpine fault can only be estimated from ground-motion prediction equations (GMPEs) based on local and overseas earthquake records. Such a duration is comparable to the duration observed in Christchurch from the 2010 Mw 7.1 Darfield earthquake. Both earthquakes were less than 50 km from the Christchurch central business area and had a magnitude that is much smaller than that expected from the Alpine Fault (Mw=8.2) and that is similar to a potential Hope Fault event (Mw7+). The Alpine fault, one of the major fault systems in New Zealand, extends all through west coast with a high possibility of a rupture in the next 50 years, meaning that the next large earthquake on the Alpine Fault is likely to occur within our, or our children’s, lifetime. the alpine fault along the west coast of new zealand. A 400 km rupture of the fault is expected to happen within our lifetime, which will have a broad impact on much of the South Island's critical infrastructure, Project AF8 lead scientist Dr Caroline Orchiston says. Dealer Locator. Plongez dans l’univers Alpine au sein de nos centres Alpine RRG. Software Updates. Scientists, working as part of Project Alpine Fault Magnitude 8 (AF8), have marked the end of their first two years of work planning and preparing for a severe magnitude eight earthquake. The Alpine Fault, which runs for about 600km up the spine of the South Island, is one of the world’s major geological features. Découvrir Rencontrez nos conseillers Alpine RRG Découvrir mon centre Alpine RRG « J’ai choisi le nom Alpine car cet adjectif représente pour moi le plaisir de conduire sur les routes de montagne » Jean Rédélé, fondateur de la marque Alpine. Fault valving and pore pressure evolution in simulations of earthquake sequences and aseismic slip. simulations can provide very useful alternative estimates of possible ground motions from large faults for major population centres. It’s the "on-land" boundary of the Pacific and Australian Plates. Vivez l’expérience Alpine. The synthetic broadband strong-motion records are produced for both a possible large Alpine Fault earthquake (Mw8.2) and a large Hope Fault earthquake (Mw7.1) at sites in a number of selected population centres that may be strongly affected. Home In this study, instead of using GMPE, we carry out synthetic broadband simulations to derive synthetic strong-motion records. 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