It's about whether that provides some protection for those population centres in Marlborough and Wellington further down the fault. [2] Ruptures occurred on multiple faults and the earthquake has been described as the "most complex earthquake ever studied". Highest point Peak Aoraki / Mount Cook Elevation 3,724 m (12,218 ft) Coordinates Dimensions Length 500 km (310 mi) Geography Location South Island, New Zealand The Southern Alps / Kā Tiritiri o te Moana is a mountain range extending along much of the length of New Zealand's South Island, reaching its greatest elevations near the range's western side. The Alpine Fault is the boundary between the Pacific crustal plate and the Australian plate. The southern part of the fault has been found to rupture on average every 291 years, plus or minus 23 years, and there is a 27 per cent chance of that happening again in the next 50 years. From the LEARNZ Alpine Fault online field trip at… The central section had evidence of eight events with a return period of 263 years plus or minus 68 years and slip of 28mm a year. Project AF8 have been preparing for a severe earthquake on the Alpine Fault for two years. Dr Caroline Orchiston explains the Alpine Fault and the damage the earthquake will have. Howarth said 1740 was the earliest likely year for the recently discovered quake and it was unlikely to be much later than 1840, otherwise it would have been felt by South Islanders and talked about. What to expect when the Alpine Fault ruptures” Stuff. Project Alpine Fault Magnitude 8 (AF8) released a series of videos on Wednesday, warning there's compelling geological evidence to show it produces a significant earthquake of magnitude eight or greater every 300 years on average. MICHAEL MANGA Neat stuff in the Field Alpine Fault, New Zealand, 2009 The Alpine Fault is a strike-slip fault that runs nearly the entire length of New Zealand's south island. Photogrammetric reconstruction of the Alpine Fault outcrop at Gaunt Creek near Whataroa, New Zealand. "The next step is to plan in more detail for a coordinated response to those impacts and the extensive disruption they will cause. GNS Science earthquake geologist Robert Langridge has been studying why the Alpine Fault is so susceptible to earthquakes - it's since been discovered that it may be the world's fastest-moving known fault line. Just-released videos have shown what would happen in the event of a major quake along the South Island's big-risk Alpine Fault. The Alpine Fault runs northeast from the northern side of the entrance to Milford Sound, along the western side of the Southern Alps for about 800 kilometres before morphing into the Marlborough fault system beyond St Arnaud. The bend – where the fault turns from its northeast-southwest orientation to run in a more north-south direction – was a "big unknown" in terms of how it interfered with ruptures. The average interval between large quakes on the fault was 330 years. GNS details on the Alpine Fault The Alpine Fault, which runs for about 600km up the spine of the South Island, is one of the world’s major geological features. It would be more of a rolling motion for people in Christchurch, because of their distance away from the fault… The Alpine Fault is the boundary between the Pacific crustal plate and the Australian plate. Despite its obvious tectonic significance, the Alpine fault has not ruptured since European settlement in the 1840s. Howarth said they were intrigued about the "big bend" in the Alpine Fault between about Springs Junction and Lake Rotoroa, near St Arnaud, which might help stop a rupture and protect people in Wellington and parts of Marlborough from severe shaking. 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