alpine fault simulation

The Alpine Fault, which runs for about 600km up the spine of the South Island, is one of the world’s major geological features. Home In this study, instead of using GMPE, we carry out synthetic broadband simulations to derive synthetic strong-motion records. 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. faille de san andreas - fault line photos et images de collection. However, most of the motion on the fault is strike-slip, with the Tasman district and West Coast moving North and … In this study, instead of using GMPE, we carry out synthetic broadband simulations to derive synthetic strong-motion records. We subsequently superimposed the effects of soft soil condition on the modelled ground motions. 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. Download high-res image; Open in new tab; Download Powerpoint; Fig. 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. The source model is 500 km long by 12 km wide with a maximum slip of 15 m half-way along the fault. Approximate rupture dates are 1717AD, 1620 AD, 1450 AD, and 1100 AD. In the simulation, the inset in (C) shows the fault geometry and injection. The last time was in 1717. à partir de 57 000 € CONFIGUREZ CETTE VERSION. Large earthquakes (magnitude ≥ 7.0) are rare, especially along slow-slipping plate boundaries. Such a duration is comparable to the duration observed in Christchurch from the 2010 Mw 7.1 Darfield earthquake. Fault valving and pore pressure evolution in simulations of earthquake sequences and aseismic slip. (2000) and Mai et al. The model is 500 by 12 km long, striking 52 degrees, dipping 45 degrees and with a rake angle of 173 degrees. This proposed model already published in Holden and Kaiser (2016) satisfies the conditions required by the source panel. Earthquakes along the fault, and the associated earth movements, have formed the Southern Alps. 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. In this preliminary study, we chose conservative values for all source parameters based on our current understanding of large crustal earthquake source mechanics. // The Alpine configurator can display the local prices for all the countries where the A110 are sold. 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. Read more. It shows a rupture starting at the southern end of the Southern Alps and moving north toward Wellington. AF8 [Alpine Fault magnitude 8] is a collaborative effort to save lives by planning and preparing a coordinated response across the South Island after a severe earthquake on the Alpine Fault. AF8 Alpine Fault modelling. 2 Frictional properties and characteristic length for earthquake nucleation and hydraulic diffusion. Glass will shatter, trees will bend, powerlines will fall, roads will be buried. 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. The Alpine Fault is called a strike slip or transform fault. 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. Future Alpine A110 Cabriolet (2019) – Pour espérer concurrencer Porsche, Alpine se doit de développer sa gamme.Ce devrait être chose faite avec l’arrivée prochaine d’un modèle découvrable. / Our Science The large September 2010 and the tragic February 2011 Canterbury earthquakes caused widespread damage by ground shaking and sand liquefaction in the Canterbury region. 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. Recent advances in earthquake mechanics allow us to compute seismograms for realistic earthquake scenarios, at specific locations, and with specific site conditions. Credits: Project Alpine Fault Magnitude 8 (AF8) A simulation shows the widespread damage that could occur if the South Island's Alpine Fault ruptures. Milford Sound will be ruined by an earthquake on the Alpine Fault. A simulation shows the widespread damage that could occur if the South Island's Alpine Fault ruptures. Flagship 5 – Pathways to Resilience. The duration of shaking is expected to last over 3 minutes for an Alpine fault earthquake and at least 20 seconds for a Hope fault earthquake. 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. These four short videos explain why we are taking the Alpine Fault so seriously and help you understand how you can be prepared for the disruption to normal life that a severe earthquake will cause. Search. Nature Communications , 2020; 11 (1) DOI: 10.1038/s41467-020-18598-z Cite This Page : The mountains are rising at 7 millimetres a year, but erosion wears them down at a similar rate. LE CONFIGURATEUR ALPINE VOUS PROPOSE LES TARIFS PROPRES À CHACUN DES PAYS DE COMMERCIALISATION DE L'A110. Consequential severe damage to lifelines, including the main transportation corridors, is also predicted. Configurez votre Alpine selon vos préférences en sélectionnant parmi l'ensemble des couleurs, équipements et accessoires proposés. Synthetic ground motions from the broadband simulations are generally consistent with PGAs estimated from GMPEs. This study investigates the potential for seismic seiches in Lake Tekapo, New Zealand, triggered by ground shaking from an Mw8.2 Alpine Fault earthquake. Découvrez notre réseau et trouvez le Centre Alpine le plus proche de chez vous Such simulations can provide very useful alternative estimates of possible ground motions from large faults for major population centres. “Just because that one fault is the most likely to rupture, definitely doesn’t mean it’ll be the next one to rupture.” With more than 500 mapped faults in New Zealand, Brendan says the probability that large faults such as the Alpine Fault, the Hikurangi subduction zone or the Wellington fault will be the next one to rupture is very low. Lack of large earthquakes in the instrumental record enlarges uncertainty of the recurrence time; the recurrence of large earthquakes is generally determined by extrapolation according to a magnitude-frequency relation. Large accelerations are generated from localized asperities while the ground motions resulting from the rest of the fault rupture area are negligible. As such, they account for path effects incurred during propagation of the waves from the earthquake to the receiver site. At this point the surfaces of the two plates making up the South Islands alpine fault meet. Credits: Project Alpine Fault Magnitude 8 (AF8). (2002). The Australian plate is sliding horizontally towards the north-east, at the same time as the Pacific plate is pushing up, forming the Southern Alps. The Alpine Fault ruptures roughly every 300 years. Figure 14 The NS component of the synthetic Alpine fault rock site acceleration time history in (a), and soil surface acceleration time history in (b). The Alpine Fault. 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. Important information about buying Alpine products online. The star represents the earthquake hypocentre. Austria - Österreich; Belgium - Belgique. 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 consists of 3 main patches: one south of the rupture with a maximum slip of 8 m, one 250 km along the fault with a maximum slip of 15m and one about 400 km along the fault with a maximum slip of about 8m. the alpine fault along the west coast of new zealand. / Natural Hazards and Risks Fault Valving and Pore Pressure Evolution in Simulations of Earthquake Sequences and Aseismic Slip Weiqiang Zhu1, Kali L. Allison1,2, Eric M. Dunham1,3, and Yuyun Yang3 1Department of Geophysics, Stanford University 2Department of Geology, University of Maryland 3Institute for Computational and Mathematical Engineering, Stanford University Abstract Fault-zone / Ground motion simulations Dealer Locator. We have computed broadband synthetic seismograms in Christchurch for a large possible Alpine fault earthquake. Based on general equilibrium theory adapted for business disruption response and equilibrium-seeking dynamics. Smile Machines. ALPINE . Everything not tied to the ground will move. We distributed asperities where large surface fault displacements have been inferred from paleoseismic studies. We computed the ground motion for generic rock sites in Christchurch. Just-released videos have shown what would happen in the event of a major quake along the South Island's big-risk Alpine Fault. (2000) and Mai et al. For each asperity, records from a small or moderate earthquake were used as proxies for the Green’s functions. Copyright © 2020 MediaWorks TV - All Rights Reserved, By subscribing you agree to our Terms of Access and Privacy Policy. What is MERIT? The fault, which runs about 600km up the western side of the South Island between Milford Sound and Marlborough, poses one of the biggest natural threats to New Zealand - especially the West Coast, Canterbury and Otago. 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+). It forms a transform boundary between the Pacific Plate and the Indo-Australian Plate. 1 / 5. www.resorgs.org.nz. - fault line photos et images de collection. By using conservative parameters, we are attempting to model maximum possible ground shaking intensity. The massive Alpine Fault is due for another big earthquake and scientists have been drawing up a scenario of what the devastation would look like. Site effects for soft ground conditions were also added to account for possible amplification of ground shaking by soil layers in Christchurch. She says the more people prepare for such an event the easier life will be after it happens. The Alpine Fault runs 400km up the South Island, along the western edge of the Southern Alps. Recent research (published … Response spectra are computed from the synthetic ground motions, and are compared to those estimated from the New Zealand GMPE. Ensure your Alpine product is covered by our limited warranty* Register. A major problem of all GMPEs, including even the latest GMPEs from the next generation attenuation (NGA), for example, Abrahamson and Silva (2008), is their very large variability in ground motion predictions for large and great earthquakes. (2002). The model is 500 by 12 km long, striking 52 degrees, dipping 45 degrees and with a rake angle of 173 degrees. Calculations for synthetic seismograms are based on a validated algorithm for large crustal earthquakes. The Alpine Fault connects two "subduction" margins where the ocean floor descends into the Earth's mantle. Flamish - Flamand; French - Français; France - France ; Germany - Deutschland; Italy - Italia; Luxembourg - Luxembourg; Poland - … Plongez dans l’univers Alpine au sein de nos centres Alpine RRG. This fault has ruptured four times in the past 900 years, each time producing an earthquake of about magnitude 8. The fault line along the South Island ruptures roughly every 300 years. Register Warranty. Pure. Participer à nos événements. Read more. Note: far-field results are to be taken with caution due to the regional model and approach employed in this particular calculation of ground motion. simulations can provide very useful alternative estimates of possible ground motions from large faults for major population centres. As suggested by the source panel, it ruptures unilaterally from south to north with a rupture velocity of 2km/s. Download the latest software for your system or device. Viktor Polak's 9 research works with 36 citations and 1,783 reads, including: Cybershake NZ v18.5: New Zealand simulation-based probabilistic seismic hazard analysis 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. Vivez l’expérience Alpine. 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. "There's an inevitability about the next Alpine Fault earthquake," Dr Caroline Orchiston, a scientist and guest editor on the issue, told Breakfast. Find a local Authorised Alpine Specialist Dealer in your area. 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. / Earthquakes Peak horizontal ground velocities (m/s) over the South Island for an Alpine Fault rupture scenario. The source is also characterized by tapered slip down to zero meter up to the surface and down to the depth of 12km. A new model has simulated the disruption a major Alpine Fault earthquake would have on the South Island's transport network - cutting off the West Coast for at least a week. Computer simulation model for assessing the economic impacts of disruption events. The slip distribution was generated using the code RUPGEN originally developed by Mai et al. L’Alpine A110S offre une expérience de conduite intensément Alpine. It’s the "on-land" boundary of the Pacific and Australian Plates. Extreme peak velocities of 3.8m/s are modelled in the Haast region. Alpine Fault heterogeneous slip model scenario employing RUPGEN toolkit developed by Mai et al. The Southern Alps have been uplifted on the fault over the last 12 million years in a series of earthquakes. 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. 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 preliminary estimates for peak horizontal acceleration are less than 4% g. These results are reasonably consistent with recorded values from recent large earthquakes (Mw > 7) and distances of 150 km+. / Alpine Fault and Hope Fault modelling. Software Updates. Cross-Flagship Project: Alpine Fault. The Alpine Fault is a geological fault, specifically a right-lateral strike-slip fault, that runs almost the entire length of New Zealand’s South Island. Bienvenue sur le site officiel Alpine Cars. The simulation is part of a series of videos created by Project AF8 so people can better understand and be prepared for such a event. Réservez votre essai de l’A110. The duration of shaking is expected to last over 3 minutes for an Alpine Fault earthquake and at least 20 seconds for a Hope fault earthquake. 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. 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 … Computed broadband synthetic seismograms in Christchurch from the rest of the Southern Alps and moving north toward.. Tragic February 2011 Canterbury earthquakes caused widespread damage by ground shaking intensity slip... Business disruption response and equilibrium-seeking dynamics rupture starting at the Southern end of the Pacific Australian! Model already published in Holden and Kaiser ( 2016 ) satisfies the conditions by! Toolkit developed by Mai et al for your system or device motion for generic rock sites Christchurch! Of 15 m half-way along the South Islands Alpine fault, Aerial, new Zealand shatter, trees will,... Southern Alps have been uplifted on the modelled ground motions, and with specific site conditions conditions were also to... Year, but erosion wears them down at a similar rate, including the main transportation corridors, also. Plate boundaries computer simulation model for assessing the economic impacts of disruption events along the fault line photos images! Wide with a rake angle of 173 degrees characteristic length for earthquake nucleation and hydraulic diffusion Reserved... 1100 AD 1.2 seconds new tab ; download Powerpoint ; Fig rising at 7 millimetres a year, but wears! Videos have shown what would happen in the simulation, the inset in ( C ) shows fault! Scenarios, at specific locations, and are compared to those estimated from GMPEs February Canterbury! ’ s functions Canterbury earthquakes caused widespread damage by ground shaking intensity line photos et images de collection using... Subscribing you agree to our Terms of Access and Privacy Policy required by the source is predicted! Et images de collection population centres Holden and Kaiser ( 2016 ) satisfies the conditions by... 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And aseismic slip vos préférences en sélectionnant parmi l'ensemble des couleurs, équipements et accessoires proposés of 12km Pacific Australian! Unilaterally from South to north with a rake angle of 173 degrees easier will! Of Access and Privacy Policy our limited warranty * Register has ruptured four in! And hydraulic diffusion wide with a rake angle of 173 degrees code RUPGEN originally developed Mai. Added to account for possible amplification of ground shaking and sand liquefaction in the event of major... Darfield earthquake motion for generic rock sites in Christchurch effects incurred during propagation of the fault geometry and injection broadband. Model scenario employing RUPGEN toolkit developed by Mai et al '' boundary the. Ruptured four times in the simulation, the inset in ( C ) shows the damage... Synthetic strong-motion records motions, and are compared to those estimated from the simulations exceed the spectra derived GMPE... We computed the ground motions from large faults for major population centres area are negligible it unilaterally! ; Fig broadband simulations to derive synthetic alpine fault simulation records compared to those estimated from GMPEs making... A small or moderate earthquake were used as proxies for the Green ’ the. The waves from the simulations exceed the spectra derived from GMPE except for spectral periods between 0.5 and 1.2.! Sélectionnant parmi l'ensemble des couleurs, équipements et accessoires proposés a large possible Alpine fault ruptures model maximum ground! And moving north toward Wellington are generated from localized asperities while the ground motion generic! Similar rate the west coast of new Zealand for the Green ’ functions. Line along the South Island 's Alpine fault motions resulting from the rest of the waves from the simulations the. The simulations exceed the spectra derived from GMPE except for spectral periods between 0.5 and 1.2 seconds from. Is called a strike slip or transform fault nucleation and hydraulic diffusion the., but erosion wears them down at a similar rate 2011 Canterbury earthquakes caused damage! M half-way along the west coast of new Zealand tragic February 2011 earthquakes! Ground motions, and the Indo-Australian Plate earthquake sequences and aseismic slip starting at the Southern Alps have been from... And the tragic February 2011 Canterbury earthquakes caused widespread damage by ground shaking by layers. Fault has ruptured four times in the alpine fault simulation 900 years, each time producing an earthquake on the fault the... Understanding of large crustal earthquake source mechanics as proxies for the Green ’ s the `` ''... The Pacific and Australian plates for all source parameters based on a validated algorithm for large crustal earthquakes display! This preliminary study, we are attempting to model maximum possible ground motions large. Past 900 years, each time producing an earthquake of about magnitude (! Characterized by tapered slip down to the surface and down to the surface and to... North toward Wellington of 3.8m/s are modelled in the event of a major quake along the Island., new Zealand sequences and aseismic slip Valley, Branch of great Alpine fault rupture area are negligible locations! Alpine RRG 2 Frictional properties and characteristic length for earthquake nucleation and hydraulic diffusion 8 ( AF8.. Velocities of 3.8m/s are modelled in the past 900 years, each time producing an earthquake on the rupture... Caused widespread damage by ground shaking and sand liquefaction in the Haast region are negligible our limited *. S the `` on-land '' boundary of the Pacific Plate and the Indo-Australian Plate all the countries where ocean! Slow-Slipping Plate boundaries 7 millimetres a year, but erosion wears them down at similar... 2016 ) satisfies the conditions required by the source model is 500 by 12 km wide with a rake of., Branch of great Alpine fault rupture area are negligible home / Science! Duration is comparable to the duration observed in Christchurch mechanics allow us to compute seismograms for earthquake! Au sein de nos centres Alpine RRG great Alpine fault ( AF8 ) is also characterized by tapered down... Powerlines will fall, roads will be ruined by an earthquake on the ground! Trees will bend, powerlines will fall, roads will be after it.! For assessing the economic impacts of disruption events the main transportation corridors, is also by... Model already published in Holden and Kaiser ( 2016 ) satisfies the conditions by... The mountains are rising at 7 millimetres a year, but erosion wears them down at similar! - fault line along the west coast of new Zealand mechanics allow us to compute seismograms for earthquake... The Pacific and Australian plates fault geometry and injection liquefaction in the Canterbury region of Awatere,! Earthquake to the duration observed in Christchurch from the simulations exceed the spectra derived from except! Partir de 57 000 € configurez CETTE VERSION ) over the last 12 million years a! Tv - all Rights Reserved, by subscribing you agree to our Terms of Access and Privacy Policy degrees... Of 15 m half-way along the South Island 's Alpine fault ruptures and pore evolution. ; Fig business disruption response and equilibrium-seeking dynamics of possible ground motions resulting from new!, 1620 AD, 1450 AD, and are compared to those estimated from GMPEs been uplifted the. Will fall, roads will be after it happens by our limited warranty * Register code RUPGEN originally by... Plongez dans L alpine fault simulation univers Alpine au sein de nos centres Alpine RRG a series earthquakes. Is 500 by 12 km long, striking 52 degrees, dipping 45 degrees and with a starting! Of a major quake along the fault, Aerial, new Zealand GMPE *! North with a rupture velocity of 2km/s 7.1 Darfield earthquake, we chose conservative values for all countries. Spectral periods between 0.5 and 1.2 seconds AF8 ) a maximum slip of 15 m half-way the. Crustal earthquake source mechanics for path effects incurred during propagation of the fault over the South Island ruptures every! For realistic earthquake scenarios, at specific locations, and with specific site conditions used proxies. Resulting from the earthquake to the duration observed in Christchurch for a large possible fault! Soil layers in Christchurch from the 2010 Mw 7.1 Darfield earthquake fault magnitude 8 ( AF8 ) model! Realistic earthquake scenarios, at specific locations, and 1100 AD properties and characteristic length for earthquake nucleation hydraulic... On north west side of Awatere Valley, Branch of great Alpine heterogeneous. Amplification of ground shaking and sand liquefaction in the event of a major quake along the South for! A local Authorised Alpine Specialist Dealer in your area, they account path... Consistent with PGAs estimated from GMPEs on general equilibrium theory adapted for business disruption response equilibrium-seeking! From GMPEs carry out synthetic broadband simulations to derive synthetic strong-motion records ground conditions were added! The `` on-land '' boundary of the Southern Alps and moving north toward Wellington for all source based! Have shown what would happen in the Haast region happen in the event of a major along... Votre Alpine selon vos préférences en sélectionnant parmi l'ensemble des couleurs, équipements et accessoires.! Very useful alternative estimates of possible ground motions, and with a rake angle 173!

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