when will the alpine fault go off

Scroll down to discover how! Read more. The team developed its co-ordinated response discussions around a south-to-north earthquake as it was most likely, she said. The: pre-Cretaceous rock belts and the faults are clearly shown on the 1958 Geological Map of New Zealand. From there, the Alpine Fault runs along the western edge of the Southern Alps, before splitting into a set of smaller dextral strike-slip faults north of Arthur's Pass, known as the Marlborough Fault System. The Alpine Fault is called a strike slip or transform fault. Seismic imaging (Davey et al., 1995) indicates that the central segment of the Alpine Fault dips southeastward at angles of 40-50° to a depth in excess of 25 km (Fig. Spot the fault. There have been no major earthquakes on the main portion of it. One major feature of the South Island of New Zealand is the Southern Alps, a mountain range caused by uplift along the Alpine Fault. 2017 is the 300th anniversary of the last major rupture on the 850-km long Alpine Fault. The lack of a historical record for the Alpine Fault means that we must instead examine the geological record left by past ruptures. The Alpine Fault is a geological fault, known as a right-lateral strike-slip fault, that runs almost the entire length of New Zealand's South Island. READ MORE: * Preparing for the big one on the Alpine Fault * Team granted funding to plan response for Alpine Fault megaquake * Quake research a good reminder. In Newsletter, Response Planning. 1. In the last 12 million years the Southern Alps have been uplifted by an amazing 20 kilometres, but erosion keeps their height below 4000m. New evidence of a 19th century earthquake on New Zealand's Alpine fault suggests that in at least one portion of the fault, smaller earthquakes may occur in between such large rupture events. Home » Co-ordinated Planning and Partnerships Pay Off . The Alpine Fault is believed to align with the Macquarie Fault Zone in the Puysegur Trench off the southwestern corner of the South Island. A number of outstanding problems remain in regard to the Alpine Fault, two of which are: Earthquake epicentres indicate that the arc defines the position of the fault just off Fiordland's outer coast and then to near the north end of Puysegur Trench at 46.9° S, 165.25° E. Along the fault vertically to a depth of 10 km the Fiordland rocks are 0.6 Mg/m 3 denser than those to the northwest. The Alpine Fault is where two great tectonic plates push together. Movement along the Alpine Fault has uplifted the Southern Alps. Kiwis needed to be concerned about an Alpine Fault quake, as it would likely "happen in the lifetime of many New Zealanders", Orchiston said. The Alpine Fault is believed to align with the Macquarie Fault Zone in the Puysegur Trench off the southwestern corner of the South Island. Co-ordinated Planning and Partnerships Pay Off. "We call those long-term issues secondary hazards and these hazards can be more extreme than the earthquake itself.". But most dangers would not appear until after the Alpine Fault earthquake, Orchiston said. A south-to-north earthquake is most likely along the South Island's Alpine Fault. It has a clear geologic record of rupturing around every three centuries - and 2017 marked the 300th anniversary of what is thought to have been a magnitude 8 … The Alpine Fault is believed to align with the Macquarie Fault Zone in the Puysegur Trench off the southwestern corner of the South Island. Share. Helpful. Date of experience: November 2020. No matter where you were in the South Island, you would feel at least a magnitude-4 or 5 quake, she said. "What it [the figures] also tells us is that these events have been popping off through time and there's really no reason for them to stop happening.". Dr Caroline Orchiston explains the Alpine Fault and the damage the earthquake will have. Your News is the place for you to save content to read later from any device. The Alpine Fault, running up the South Island, has an earthquake nearly every 300 years. The investigation found the mean interval between large earthquakes on the fault is 330 years and two thirds of the … From there, the Alpine Fault runs along the western edge of the Southern Alps, before splitting into a set of smaller dextral strike-slip faults north of Arthur’s Pass, known as the Marlborough Fault System. Regardless of the epicentre, Marlborough was looking at an intensity 6 or 7 earthquake on the Mercalli scale when the Alpine Fault finally gave. Approximate rupture dates are 1717AD, 1620 AD, 1450 AD, and 1100 AD. An earthquake on the Alpine Fault sweeps away old forest and creates large tracts of clear ground for new vegetation to spring up upon. Whataroa Tourism; Whataroa Accommodation; Whataroa Bed and Breakfast; Whataroa Holiday Rentals; Whataroa Holiday Packages; Whataroa Flights; Whataroa Restaurants The Ministry of Civil Defence approved a grant of $680,000 over three years for Project AF8, with work starting in 2016. "Marlborough has, tsunami-wise, more to be concerned about from the Hikurangi Trench off the east coast of the North Island, which poses quite a threat.". Movement along this fault has uplifted the Southern Alps and produced large earthquakes. The length of the rupture will be … Movement along this fault has uplifted the Southern Alps and caused large earthquakes. Updating list... 20 - 25 of 26 reviews. Dr Caroline Orchiston explains the Alpine Fault and the damage the earthquake will have. The Alpine Fault runs for over 800km up the spine of the South Island. The Alpine 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 study aims to inform locals and tourists of the significant risk to the area should the Alpine faultline go off. Boat Tours in Whataroa; Bus Tours in Whataroa; Walking Tours in Whataroa London, United Kingdom. Forming the western edge of the Southern Alps, it is clearly visible from space. "As you can see, there's a potential for more damage up in the northern part of the South Island, where more of the population lives.". 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. Alpine Fault Tours Exposed, Whataroa: See 24 reviews, articles, and 43 photos of Alpine Fault Tours Exposed, ranked No.3 on Tripadvisor among 4 attractions in Whataroa. This fault has ruptured four times in the past 900 years, each time producing an earthquake of about magnitude 8. A project set to drill 1.3 kilometres into the Alpine Fault has been called off 400 metres shy of its goal. We've known about the Alpine Fault for around 80 years. Boat Tours in Whataroa; Bus Tours in Whataroa; Walking Tours in Whataroa The alpine fault earthquake will alter tectonic stress distribution, and other faultlines may rupture in the days or years following it. The Alpine Fault is a geological fault, known as a right-lateral strike-slip fault, that runs almost the entire length of New Zealand's South Island. Fault line . This meant that a magnitude 8 earthquake on the Alpine Fault would release 30 times more energy than the 1968 magnitude 7 earthquake at Inangahua, on the South Island's West Coast. "The Alpine Fault is a spectacular fault, it's more than 800 kilometres long at its full extent," Orchiston said. 2017 is the 300th anniversary of the last major rupture on the 850-km long Alpine Fault. Postal Address: From there, the Alpine Fault runs along the western edge of the Southern Alps, then splits into three parallel faults north of Arthur's Pass , merging into the Kermadec-Tonga Subduction Zone in the Hikurangi Trench off the coast of the North Island. The goal of Project AF8 was to create a safer and stronger South Island, through better preparation, as the Alpine Fault had the potential to impact the whole island, and beyond, Orchiston said. 01donala. Although the Alpine Fault seems so obvious today, but it was not recognised until 1941 by … Image: NASA. This fault has ruptured four times in the past 900 years, each time producing an earthquake of about magnitude 8. This is now most evident in the Southern Alps, formed by compression of the crust beside the Alpine Fault. The Alpine Fault travels 800 kilometres from Milford Sound to the Marlborough Sounds. You can pick out the line of the Alpine Fault on this satellite image of the South Island. Forming the western edge of the Southern Alps, it is clearly visible from space. How often does the Alpine Fault rupture? The Alpine Fault is believed to align with the Macquarie Fault Zone in the Puysegur Trench off the southwestern corner of the South Island. Brilliant tour, unique occurance, highly informative, very friendly guides. "What we're seeing is a very long history of seismic activity on the fault, which is a really unique record," Orchiston said. Athy 19 contributions 4 helpful votes. When the Alpine Fault next ruptures it is likely to produce an earthquake with a magnitude of around 8. Filter. 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. "I don't think the Alpine Fault will cause uplift in Marlborough; the land going up like it did in the Kaikōura earthquake," van Dissen said. The seismicity rate of the Alpine fault is low but comparable to locked sections of the San Andreas fault, with large earthquakes expected. On the go and no time to finish that story right now? The Alpine Fault quickly became accepted as a notable feature of the geology of New Zealand, and by 1948 was included on standard geological maps. At the other end of the straight line the Alpine Fault passes through the Lewis Pass Scenic Reserve. Posted June 9, 2020. The Alpine Fault runs 400km up the South Island, along the western edge of the Southern Alps. The Alpine Fault was inferred to continue south-west from Lake McKerrow along the northern Fiord-land Coast (see also Grindley, 1958). The Alpine Fault runs for about 600km up the spine of the South Island, and is one of the world’s major geological features. One major geographic feature of the South Island of New Zealand is the Southern Alps, a mountain range caused by tectonic uplift along the Alpine Fault. It passes offshore in South Westland (bottom left), and is responsible for … Spent a really interesting and completely unexpected morning on a private tour of the Alpine fault line. Alpine orogeny, mountain-building event that affected a broad segment of southern Europe and the Mediterranean region during the Paleogene and Neogene periods (65.5 million to 2.6 million years ago).The Alpine orogeny produced intense metamorphism of preexisting rocks, crumpling of rock strata, and uplift accompanied by both normal and thrust faulting. Elizabeth, our tour guide, was very knowledgeable and enthusiastic showing off this area of NZ and explaining how the tectonic plates work. PHOTO: PROJECTAF8.CO.NZ “What we know about the Alpine Fault is that it tends to produce big earthquakes, roughly every 300 years,” Dr Orchiston said. Motion on the fault is in a direction that plunges approximately 22°, indicating that the fault in … It has a clear geologic record of rupturing around every three centuries - and 2017 marked the 300th anniversary of what is thought to have been a magnitude 8 … The rapid uplift also means that faulted rock from deep down has been brought to the surface, and can be studied by scientists. Studies at Alpine Fault excavation sites showed a large earthquake occurred on the fault every 300 years or so, with the last one occurring in 1717. Abstract Tectonic weakening of bedrock along the Alpine Fault Zone (AFZ) in South Westland and northern Fiordland, New Zealand, has favoured erosion of schist‐derived mylonite and cataclasite by a variety of slope failures. These include the Clarence, Awatere and Hope Faults, all of which take some of the seismic load off the northern part of the Alpine Fault and transfer it through Marlborough. The Alpine Fault is a geological fault that runs entirely through New Zealand's South Island. 32 11. The last Alpine Fault quake, which occurred in 1717, measured an approximate magnitude 8.1 - making it about three times stronger than the Kaikoura quake of 2016. In this image you can see the Alpine Fault trace in the landscape, ending as it goes off-shore at John O'Groats on the coast. A rupture along the full length of the fast-slipping Alpine Fault on New Zealand's South Island poses the largest potential seismic threat to the southern and central parts of the country. Each time it has ruptured, it has also moved vertically, lifting the Southern Alps in the process. From there, the Alpine Fault runs along the western edge of the Southern Alps, before splitting into a set of smaller dextral strike-slip faults north of Arthur's Pass , known as the Marlborough Fault System . Affect a much larger area than earthquakes such as the Darfield earthquake. In the North. The aftershock sequence could involve earthquakes of as much as M7 and continue for many years, Violent shaking will cause widespread landslides and weaken rock, making landslides more common for many years, Rivers may change course, will carry more sediment and therefore flood more easily, Towns and infrastructure such as roads, bridges, power lines and communication services will be disrupted, West Coast industries such as tourism, coal and gold mining, forestry and wood processing, fishing, and dairy farming will all be affected by an Alpine Fault earthquake. Recent research (published in 2012) by GNS Science has extended our knowledge of the Alpine fault earthquake record back through the past 8000 years. Alteration Along the Alpine Fault Helps Build Seismic Strain . The scenarios were designed and developed as part of Project AF8, or Alpine Fault Magnitude 8, a partnership of all the Emergency Management Groups in the South Island. Recent research by GNS Science has extended our knowledge of the Alpine fault earthquake record back through the past 8,000 years. A graphic shows an indicative line of the Alpine Fault in relation to Wanaka and Queenstown. Snow on the mountains of the Pacific plate contrasts with the lower land of the Australian plate. The Hope Fault, which caused a magnitude 7 to 7.3 quake in North Canterbury in 1888, crosses the South Island from the Alpine Fault at the Taramakau River to the coastline north of Kaikoura. Otago University research fellow Caroline Orchiston detailed the group's work at a public meeting in Blenheim on Wednesday. The trenches, each of about 20m-long will allow the geologists to take photos and make detailed drawings of the recently deposited strata to a depth of 2m. Alpine Fault Tours Exposed, Whataroa: See 24 reviews, articles, and 43 photos of Alpine Fault Tours Exposed, ranked No.3 on Tripadvisor among 4 attractions in Whataroa. It forms a boundary between the Pacific Plate and the Indo-Australian Plate . Photo credit: Project AF8 The fault mover 30mm a year! . Awesome experience. Seismicity decreases north of Bruce Bay at the Alpine fault and within a triangular region along the Alpine fault located between the Hope and Porters Pass fault zones. As with many natural systems, there was a spread of intervals with the longest being about 510 years and the shortest about 140 years. Glacier Country Scenic Flights; White Heron Sanctuary Tours; Petr Hlavacek Gallery; Experience Fox Glacier; Lake Mapourika; Church of Our Lady of the Alps; Church of St. James; Hukawai Lodge; Hukawai Art Gallery; Tours in Whataroa. During the Eo‐Oligocene, extensional oblique‐slip (transtension) on these fault systems led to the subsidence and final submergence of Fiordland. On these Fault systems led to the subsidence and final submergence of Fiordland global.... The Ministry of Civil Defence approved a grant of $ 680,000 over three years for Project,... The 2004 Boxing Day tsunami and the 2011 liquefaction of buildings in were! To prevent further development in the days or years following it `` we call those long-term issues secondary hazards she... Main portion of it examples of secondary hazards and these hazards can be more extreme the. Today will still be alive when the Alpine Fault Puysegur Trench off the southwestern corner of the Southern.... 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