what will happen when the alpine fault goes

December 27, 2020 Bolton News 0 Comments

what will happen when the alpine fault goes

There is also another that in its own way is relevant to Christchurch – showing what WILL happen when the Alpine fault goes next time. He stressed the importance of being prepared, as main roading routes between Canterbury and the West Coast could be cut off. The rupture will produce one of the biggest earthquakes since European settlement of New Zealand, and it will have a major impact on the lives of many people. This fault has ruptured four times in the past 900 years, each time producing an earthquake of about magnitude 8. The shortest gap between quakes was 140 years, and the longest 510. It could cause horizontal movement of up to eight metres. The Alpine Fault: when AF8 goes big! It forms a transform boundary between the Pacific Plate and the Indo-Australian Plate. * When, not if: Alpine fault could cause 8 metres of movement GNS science said there was a 30 per cent chance of a large earthquake on the Alpine Fault in the next 50 years. This happens with incredible regularity around every 300 years, on average. 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. Earthquakes along the fault, and the associated earth movements, have formed the Southern Alps. The length of the rupture will be up to 400 km, eg. The alpine fault earthquake will alter tectonic stress distribution, and other faultlines may rupture in the days or years following it. "Given what we know from geological studies of the Alpine Fault, we're anticipating a major magnitude 8.0-plus earthquake, rupturing 500km of the crust, so the shaking will be felt throughout the South Island, but the intensity and duration will ultimately depend on what happens on the fault." As with many natural systems, there was a spread of intervals with the longest being about 510 years and the shortest about 140 years. The damaging Christchurch earthquakes ranged from magnitude 4.9 to 7.1 but what will happen when the Alpine fault goes and produces an 8, similar to the ’quakes in Japan? Work during the 1990s has established that the Alpine Fault is a major source of potential seismic hazard and incorporation of data from the fault into seismic hazard maps has greatly changed the perception of earthquake hazard in the South Island. The Southern Alps have been uplifted on the fault over the last 12 million years in a series of earthquakes. It may be a fault zone in that it contains lesser faults, but the associated faults will be distinctly minor, closely related, and clearly part of the main fault … Since the fault has major earthquakes about every 330 years, and the most recent one was 295 years ago, it’s likely to go … The Alpine Fault, which runs for 650km along the spine of the Southern Alps, produces an earthquake of about magnitude 8 on average every 330 years. Horizontal movement of the Alpine Fault is about 30m per 1000 years — very fast by global standards. A mega magnitude eight earthquake on the South Island's Alpine Fault will likely happen in the lifetime of many New Zealanders alive today, scientists warn. At 3 AM on May 29, 2013, the South Island’s technological uncon­scious roars […] The last one was in 1717, 302 years ago, so a big one is coming. The central and southern parts of the Alpine Fault run for about 400 kilometres up the spine of the South Island, and are about 40 times longer than the fault responsible for the fatal February 2011 earthquake in Christchurch. It would be more of a rolling motion for people in Christchurch, because of their distance away from the fault, he said. 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. It forms a transform boundary between the Pacific Plate and the Indo-Australian Plate. That's described as "very destructive;" weak buildings will fall down and many more will be damaged. "Now that we have that understanding, we can prepare for it better, and hopefully we can lessen the impact it has on us as a society.". Recent research (published in 2012) by GNS Science has extended our knowledge of the Alpine fault earthquake record back through the past 8000 years. The extent of damage would depend on a number of factors, including the state of the land and how vulnerable it was to liquefaction. An earlier event at around 1600 AD can be recognised throughout the study area, and this is the most recent event in the trench locations north of the Haupiri River. and Goff, J. The Alpine Fault has a high probability (estimated at 30%) of rupturing in the next 50 years. The earthquake will last for about two minutes. The last major earthquake on the Alpine Fault was in 1717, so we're already a little overdue for one of the biggest earthquakes in New Zealand's modern history. - Wind and waterproof clothing, sun hats, and strong outdoor shoes. A big quake on the Alpine Fault could block South Island highways in more than 120 places and leave 10,000 people cut off, new research has estimated. Along the Alpine Fault, most areas will experience MM9 shaking, with pockets of MM10. The Alpine Fault moves about 30m sideways per 1,000 years and is the fastest moving fault in the world. 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. The Alpine Fault is called a strike slip or transform fault. GNS science said there was a 30 per cent chance of a large earthquake on the Alpine Fault in the next 50 years. The shaking in Christchurch, as some below have identified, will be slow and rolly, you will not reach the intensity that the greendale sequence did and definitely not Feb 22 levels. "The surface expression of the Alpine Fault is remarkably clear, but there is some debate about the shape of the fault as it goes several kilometres underground. He wants to raise awareness, not alarm, so people can be fully prepared. McFadgen, B.G. / Learning Each time it has ruptured, it has also moved vertically, lifting the Southern Alps in the process. The rupture will produce one of the biggest earthquakes since European settlement of New Zealand, and it will have a major impact on the lives of many people. Big one is coming Alpine Fault has a 28 % probability of rupturing in next!, not alarm, so a big one is coming 50 to 100.... The world about magnitude 8 the rapid uplift also means that faulted rock deep. 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