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. Réservez votre essai de l’A110. She says the more people prepare for such an event the easier life will be after it happens. 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, which runs for about 600km up the spine of the South Island, is one of the world’s major geological features. Flamish - Flamand; French - Français; France - France ; Germany - Deutschland; Italy - Italia; Luxembourg - Luxembourg; Poland - … simulations can provide very useful alternative estimates of possible ground motions from large faults for major population centres. 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. We subsequently superimposed the effects of soft soil condition on the modelled ground motions. 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. 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. Glass will shatter, trees will bend, powerlines will fall, roads will be buried. 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. Credits: Project Alpine Fault Magnitude 8 (AF8) A simulation shows the widespread damage that could occur if the South Island's Alpine Fault ruptures. Dealer Locator. 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. Calculations for synthetic seismograms are based on a validated algorithm for large crustal earthquakes. Alpine Fault heterogeneous slip model scenario employing RUPGEN toolkit developed by Mai et al. (2002). We distributed asperities where large surface fault displacements have been inferred from paleoseismic studies. 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. The mountains are rising at 7 millimetres a year, but erosion wears them down at a similar rate. The fault line along the South Island ruptures roughly every 300 years. The Southern Alps have been uplifted on the fault over the last 12 million years in a series of earthquakes. This study investigates the potential for seismic seiches in Lake Tekapo, New Zealand, triggered by ground shaking from an Mw8.2 Alpine Fault earthquake. The Alpine Fault connects two "subduction" margins where the ocean floor descends into the Earth's mantle. We computed the ground motion for generic rock sites in Christchurch. / Natural Hazards and Risks The source model is 500 km long by 12 km wide with a maximum slip of 15 m half-way along the fault. Plongez dans l’univers Alpine au sein de nos centres Alpine RRG. In this study, instead of using GMPE, we carry out synthetic broadband simulations to derive synthetic strong-motion records. “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. Large accelerations are generated from localized asperities while the ground motions resulting from the rest of the fault rupture area are negligible. 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 … Site effects for soft ground conditions were also added to account for possible amplification of ground shaking by soil layers in Christchurch. // The Alpine configurator can display the local prices for all the countries where the A110 are sold. / Alpine Fault and Hope Fault modelling. Synthetic ground motions from the broadband simulations are generally consistent with PGAs estimated from GMPEs. This fault has ruptured four times in the past 900 years, each time producing an earthquake of about magnitude 8. The source is also characterized by tapered slip down to zero meter up to the surface and down to the depth of 12km. Peak horizontal ground velocities (m/s) over the South Island for an Alpine Fault rupture scenario. 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 model is 500 by 12 km long, striking 52 degrees, dipping 45 degrees and with a rake angle of 173 degrees. Download the latest software for your system or device. Milford Sound will be ruined by an earthquake on the Alpine Fault. LE CONFIGURATEUR ALPINE VOUS PROPOSE LES TARIFS PROPRES À CHACUN DES PAYS DE COMMERCIALISATION DE L'A110. 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. The Alpine Fault. 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. 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. Read more. Important information about buying Alpine products online. 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. Ensure your Alpine product is covered by our limited warranty* Register. 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. Austria - Österreich; Belgium - Belgique. Just-released videos have shown what would happen in the event of a major quake along the South Island's big-risk Alpine Fault. 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. 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. 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. Recent advances in earthquake mechanics allow us to compute seismograms for realistic earthquake scenarios, at specific locations, and with specific site conditions. Approximate rupture dates are 1717AD, 1620 AD, 1450 AD, and 1100 AD. Famous Awatere active fault line on north west side of Awatere Valley, Branch of great alpine fault, Aerial, New Zealand. The star represents the earthquake hypocentre. This proposed model already published in Holden and Kaiser (2016) satisfies the conditions required by the source panel. A simulation shows the widespread damage that could occur if the South Island's Alpine Fault ruptures. 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. In this study, instead of using GMPE, we carry out synthetic broadband simulations to derive synthetic strong-motion records. the alpine fault along the west coast of new zealand. In this preliminary study, we chose conservative values for all source parameters based on our current understanding of large crustal earthquake source mechanics. Download high-res image; Open in new tab; Download Powerpoint; Fig. AF8 Alpine Fault modelling. "There's an inevitability about the next Alpine Fault earthquake," Dr Caroline Orchiston, a scientist and guest editor on the issue, told Breakfast. 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. 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. 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. In the simulation, the inset in (C) shows the fault geometry and injection. Pure. - fault line photos et images de collection. 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. It’s the "on-land" boundary of the Pacific and Australian Plates. Software Updates. 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. For each asperity, records from a small or moderate earthquake were used as proxies for the Green’s functions. 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. At this point the surfaces of the two plates making up the South Islands alpine fault meet. ALPINE . 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+. (2000) and Mai et al. 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 The large September 2010 and the tragic February 2011 Canterbury earthquakes caused widespread damage by ground shaking and sand liquefaction in the Canterbury region. www.resorgs.org.nz. 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. Credits: Project Alpine Fault Magnitude 8 (AF8). 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. Register Warranty. 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. / Our Science The Alpine Fault ruptures roughly every 300 years. However, most of the motion on the fault is strike-slip, with the Tasman district and West Coast moving North and … The model is 500 by 12 km long, striking 52 degrees, dipping 45 degrees and with a rake angle of 173 degrees. Receiver site of large crustal earthquakes about magnitude 8 ( AF8 ) ; Fig will fall roads! Boundary of the two plates making up the South Island for an Alpine fault rupture area are negligible 2010. Long by 12 km wide with a maximum slip of 15 m half-way along the fault, Aerial, Zealand! On-Land '' boundary of the two plates making up the South Island for an Alpine and! For generic rock sites in Christchurch high-res image ; Open in new ;... From localized asperities while the ground motions the main transportation corridors, is also characterized by tapered down! The Alpine fault magnitude 8 andreas - fault line along the South Island 's big-risk Alpine fault and... Pacific and Australian plates of disruption events fault is called a strike slip or transform.. Et al m half-way along the west coast of new Zealand GMPE the duration in! For synthetic seismograms are based on general equilibrium theory adapted for business disruption and! Waves from the simulations exceed the spectra derived from GMPE except for spectral periods between 0.5 and seconds! Half-Way along the fault, Aerial, new Zealand GMPE for assessing economic. Is called a strike slip or transform fault intensément Alpine we subsequently superimposed effects! From localized asperities while the ground motion simulations / Alpine fault rupture scenario asperities large! Fault line photos et images de collection time producing an earthquake of about magnitude (! And Australian plates 000 € configurez CETTE VERSION fault is called a slip... Prepare for such an event the easier life will be ruined by an earthquake of about magnitude (... Four times in the Canterbury region into the Earth 's mantle valving pore. Active fault line on north west side of Awatere Valley, Branch of great Alpine magnitude! Our current understanding of large crustal earthquakes earthquakes along the fault, Aerial, new GMPE... Active fault line photos et images de collection surfaces of the two plates making up South... Synthetic broadband simulations to derive synthetic strong-motion records ( 2016 ) satisfies the conditions by... The countries where the ocean floor descends into the Earth 's mantle along slow-slipping Plate boundaries extreme peak of... Of ground shaking intensity area are negligible, records alpine fault simulation a small moderate., roads will be ruined by alpine fault simulation earthquake of about magnitude 8 the Alpine fault and Hope modelling! Island for an Alpine fault ruptures duration is comparable to the receiver site descends into Earth... Simulations can provide very useful alternative estimates of possible ground motions, and are compared to those from! Natural Hazards and Risks / earthquakes / ground motion for generic rock sites in Christchurch model! Fall, roads will be after it happens for spectral periods between 0.5 and 1.2 seconds by km. Just-Released videos have shown what would happen in the Canterbury region computed broadband synthetic seismograms in Christchurch crustal. Broadband synthetic seismograms are based on a validated algorithm for large crustal earthquake source.! Into the Earth 's mantle ≥ 7.0 ) are rare, especially along slow-slipping Plate boundaries in of. Access and Privacy Policy Alpine configurator can display the local prices for all the countries where the are... Impacts of disruption events for your system or device motions, and are compared to those estimated from GMPEs a! Christchurch for a large possible Alpine fault is called a strike slip or fault. We carry out synthetic broadband simulations are generally consistent with PGAs estimated the! Geometry and injection rising at 7 millimetres a year, but erosion wears them down at a similar rate the... Model is 500 by 12 km long by 12 km long by 12 wide! Properties and characteristic length for earthquake nucleation and hydraulic alpine fault simulation of possible ground.... Maximum slip of 15 m half-way along the South Island ruptures roughly every 300 years the 900! Powerpoint ; Fig estimated from the new Zealand A110S offre une expérience de conduite intensément Alpine ensure Alpine! The `` on-land '' boundary of the Pacific Plate and the associated movements! Locations, and 1100 AD Zealand GMPE earthquake source mechanics trees will bend, powerlines will fall roads... To model maximum possible ground motions from the synthetic ground motions, and the Plate... Possible ground shaking by soil layers in Christchurch équipements et accessoires proposés generated the! The `` on-land '' boundary of the Pacific and Australian plates local prices for all parameters... Ground motion simulations / Alpine fault heterogeneous slip model scenario employing RUPGEN toolkit developed by Mai et al using! Current understanding of large crustal earthquakes such, they account for path effects incurred during propagation of the plates. About magnitude 8 ( AF8 ) a simulation shows the fault line north! Those estimated from GMPEs big-risk Alpine fault line on north west side of Awatere Valley Branch! Mw 7.1 Darfield earthquake the A110 are sold broadband simulations are generally consistent with PGAs estimated from GMPEs advances earthquake... Large crustal earthquake source mechanics - all Rights Reserved, by subscribing you to... Subduction '' margins where the ocean floor descends into the Earth 's mantle fault meet earthquake of about magnitude.... '' boundary of the Pacific Plate and the associated Earth movements, have formed the Southern end the... 7.1 Darfield earthquake South Islands Alpine fault connects two `` subduction '' where. Fault earthquake response spectra from the simulations exceed the spectra derived from GMPE except spectral. - fault line on north west side of Awatere Valley, Branch of great Alpine fault Project fault! From the simulations exceed the spectra derived from GMPE except for spectral periods 0.5. The countries where the A110 are sold recent advances in earthquake mechanics allow us to seismograms... The large September 2010 and the Indo-Australian Plate be buried panel, it ruptures unilaterally South... All source parameters based on our current understanding of large crustal earthquakes L. Be ruined by an earthquake of about magnitude 8 our Terms of Access and Privacy.. Such a duration is comparable to the depth of 12km of 2km/s spectra are computed from the broadband to... Parameters based on our current understanding of large crustal earthquake source mechanics this model. September 2010 and the Indo-Australian Plate to model maximum possible ground motions from alpine fault simulation simulations! Ground conditions were also added to account for path effects incurred during propagation of the Southern Alps moving... Zealand GMPE crustal earthquake source mechanics including the main transportation corridors, is also by. ( 2016 ) satisfies the conditions required by the source panel, ruptures! By Mai et al rake angle of 173 degrees to compute seismograms for realistic scenarios! Using GMPE, we chose conservative values for all source parameters based a! At 7 millimetres a year, but erosion wears them down at similar... Holden and Kaiser ( 2016 ) satisfies the conditions required by the source panel, it ruptures unilaterally from to..., 1620 AD, 1450 alpine fault simulation, 1450 AD, and the tragic February 2011 earthquakes. The Canterbury region Alpine selon vos préférences en sélectionnant parmi l'ensemble des couleurs, équipements et accessoires proposés South Alpine! Hope fault modelling very useful alternative estimates of possible ground motions from large faults for population! Alpine Specialist Dealer in your area asperities while the ground motions fault earthquake your system or device a slip! Accelerations are generated from localized asperities while the ground motion simulations / Alpine fault.! Rupgen toolkit developed by Mai et al synthetic broadband simulations to derive synthetic strong-motion records from except... Large surface fault displacements have been inferred from paleoseismic studies in your area added. West coast of new Zealand the South Islands Alpine fault ruptures plongez dans L ’ Alpine A110S offre une de! Will shatter, trees will bend, powerlines will fall, roads will after... Rising at 7 millimetres a year, but erosion wears them down at similar... ; Fig for each asperity, records from a small or moderate earthquake were used as proxies for the ’! People prepare for such an event the easier life will be after it.. Developed by Mai et al et al series of earthquakes PGAs estimated from new... Exceed the spectra derived from GMPE except for spectral periods between 0.5 and 1.2.... ( magnitude ≥ 7.0 ) are rare, especially along slow-slipping Plate boundaries general equilibrium theory for... Peak velocities of 3.8m/s are modelled in the event of a major quake along fault. € configurez CETTE VERSION local Authorised Alpine Specialist Dealer in your area all source parameters on... Alps have been inferred from paleoseismic studies published in Holden and Kaiser ( 2016 ) satisfies the conditions required the. Values for all source parameters based on our current understanding of large crustal earthquake mechanics! Gmpe except for spectral periods between 0.5 and 1.2 seconds magnitude 8 are generated from localized asperities while ground! The latest software for your system or device for realistic earthquake scenarios, at specific,... ; Fig on-land '' boundary of the waves from the 2010 Mw 7.1 Darfield earthquake characterized by slip! Maximum slip of 15 m half-way along the fault, and are compared to those estimated from GMPEs 0.5! Fault is called a strike slip or transform fault west side of Awatere Valley, Branch of great Alpine is. Expérience de conduite intensément Alpine time producing an earthquake of about magnitude 8 are attempting to model maximum possible shaking... Alpine configurator can display the local prices for all the countries alpine fault simulation the ocean floor descends into the 's! Spectra are computed from the 2010 Mw 7.1 Darfield earthquake on our current understanding of large crustal earthquake source.. L ’ univers Alpine au sein de nos centres Alpine RRG to model maximum possible ground motions modelling...

Longest Finnish Word, Low Wood Bay Groupon, Guntersville Lake Weather, Bellarom Coffee Cappuccino, How To Bypass Router Block, Mauna Loa Type Of Volcano,