Each time it has ruptured, it has also moved vertically, lifting the Southern Alps in the process. 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. 01donala. 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 . On the go and no time to finish that story right now? Regardless of the epicentre, Marlborough was looking at an intensity 6 or 7 earthquake on the Mercalli scale when the Alpine Fault finally gave. 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 Southern Alps have been formed over millennia by upthrust from successive earthquakes on the Alpine Fault. Brilliant tour, unique occurance, highly informative, very friendly guides. Share. Whataroa Tourism; Whataroa Hotels; Whataroa Bed and Breakfast; Whataroa Holiday Rentals; Whataroa Packages; Flights to Whataroa; Whataroa Restaurants; Whataroa Attractions How often does the Alpine Fault rupture? 1. This fault has ruptured four times in the past 900 years, each time producing an earthquake of about 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. But most dangers would not appear until after the Alpine Fault earthquake, Orchiston said. A number of outstanding problems remain in regard to the Alpine Fault, two of which are: One major feature of the South Island of New Zealand is the Southern Alps, a mountain range caused by uplift along the Alpine Fault. The Alpine Fault runs for over 800km up the spine of the South Island. Caroline Orchiston says the Alpine Fault is a "spectacular" fault. 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. 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. Alpine Fault virtual field trip . . Image: LEARNZ. The alpine fault is located in New Zeland. How do you think you would be affected by a rupture of the Alpine Fault? Affect a much larger area than earthquakes such as the Darfield earthquake. It forms a boundary between the Pacific Plate and the Indo-Australian Plate . Updating list... 20 - 25 of 26 reviews. Otago University research fellow Caroline Orchiston detailed the group's work at a public meeting in Blenheim on Wednesday. Photo: RNZ / Veronika Meduna. The 2004 Boxing Day tsunami and the 2011 liquefaction of buildings in Christchurch were two past examples of secondary hazards, she said. This demonstration allows you to go on a virtual field trip along the Alpine Fault and see some of the key outcrops. "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.". Image: LEARNZ. Awesome experience. The Alpine Fault was inferred to continue south-west from Lake McKerrow along the northern Fiord-land Coast (see also Grindley, 1958). The investigation found the mean interval between large earthquakes on the fault is 330 years and two thirds of the … "The Alpine Fault is a spectacular fault, it's more than 800 kilometres long at its full extent," Orchiston said. 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. 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. Milford Sound is the most likely epicentre for a magnitude-8 earthquake on the Alpine Fault. Image: NASA. Although the Alpine Fault accommodates a substantial amount of interplate slip, a significant proportion is distributed to the east within and east of the Southern Alps. Because of the way earthquake magnitude is measured this means that a magnitude 8 earthquake releases about 30 times more energy than a magnitude 7. The Alpine Fault is where two great tectonic plates push together. The length of the rupture will be … 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 … The Bank of New Zealand has received a warning from the Commerce Commission over its likely failure to meet responsible lending requirements … It’s the part of the active boundary between the Pacific and Australian tectonic plates where they intersect on land. "When we think of earthquakes, our mind goes straight to shaking, straight to the panic we feel when the ground moves," Orchiston said. Movement along this fault has uplifted the Southern Alps and caused large earthquakes. 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. The: pre-Cretaceous rock belts and the faults are clearly shown on the 1958 Geological Map of New Zealand. The Southern Alps have been uplifted on the fault over the last 12 million years in a series of earthquakes. This is now most evident in the Southern Alps, formed by compression of the crust beside the Alpine Fault. A project set to drill 1.3 kilometres into the Alpine Fault has been called off 400 metres shy of its goal. 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. 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. GNS Science earthquake geologist Russ van Dissen, who also presented at the conference, talked about the tsunami risk after an Alpine Fault quake. It is a dominant feature of the South Island. "What we're seeing is a very long history of seismic activity on the fault, which is a really unique record," Orchiston said. The Alpine Fault. The alpine fault earthquake will alter tectonic stress distribution, and other faultlines may rupture in the days or years following it. 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. “Hands on Alpine Fault learnings plus a bush short walk in Whataroa ... Read reviews in English Go back. Alteration Along the Alpine Fault Helps Build Seismic Strain . That's before satellite photographs or plate tectonics. In the last 12 million years the Southern Alps have been uplifted by an amazing 20 kilometres, but erosion keeps their height below 4000m. By Alice Lake-Hammond. Recent research by GNS Science has extended our knowledge of the Alpine fault earthquake record back through the past 8,000 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. The Alpine Fault is called a strike slip or transform fault. The rapid uplift also means that faulted rock from deep down has been brought to the surface, and can be studied by scientists. Filter. The Darfield earthquake had a magnitude of M7.1. South Island and those that are Cl1!t off to the north-west by the Alpine Fault at the south end of the island. The Alpine Fault runs for about 600km up the spine of the South Island, and is one of the world’s major geological features. Co-ordinated Planning and Partnerships Pay Off. 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. Spot the fault. 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. There is no way of predicting exactly when an earthquake will occur. 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. 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. You will visit Franz Josef which sits above the Alpine Fault on the Geohazards virtual field trip. "The tsunami, in the Alpine Fault case, might be [caused by] submarine landslides being generated off the West Coast, and it will impact the West Coast. Camp Glenorchy project manager Steve Hewland talks about the resilience factors of the newly-built camping ground near Queenstown. The study aims to inform locals and tourists of the significant risk to the area should the Alpine faultline go off. Tree ages in this entire region are therefore clustered around the times of major earthquakes. How often does the Alpine Fault rupture? New Zealand, Kā Roimata o Hine Hukatere - Franz Josef Glacier, Likely rupture along a larger area of the fault (several hundreds of kilometres), It will last longer (hundreds of seconds rather than tens of seconds). Reviewed 17 December 2016 via mobile . 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 that runs almost the entire length of New Zealand's South Island (c. 480 km) and forms the boundary between the Pacific Plate and the Indo-Australian Plate. Can't find Fault. 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 believed to align with the Macquarie Fault Zone in the Puysegur Trench off the southwestern corner of the South Island. Scientists believe the Alpine Fault has a high probability (estimated at 30%) of rupturing in the next 50 years. Recent research by GNS Science has extended our knowledge of the Alpine fault earthquake record back through the past 8,000 years. Selected filters. Most New Zealanders alive today will still be alive when the Alpine Fault rips in a magnitude-8 earthquake, leading scientists say. Snow on the mountains of the Pacific plate contrasts with the lower land of the Australian plate. [Chapter Break] After their ground­breaking paper on the Alpine Fault, Willett was posted to Invercargill and Wellman to another war­time project at d’Urville Island. Spent a really interesting and completely unexpected morning on a private tour of the Alpine fault line. Motion on the fault is in a direction that plunges approximately 22°, indicating that the fault in … In between earthquakes, the Alpine Fault is locked. Dr Caroline Orchiston explains the Alpine Fault and the damage the earthquake will have. "We call those long-term issues secondary hazards and these hazards can be more extreme than the earthquake itself.". Whataroa Tourism; Whataroa Hotels; Bed and Breakfast Whataroa; Whataroa Holiday Rentals; Flights to Whataroa; Whataroa Restaurants; Whataroa Attractions; Whataroa Travel Forum An earthquake on the Alpine Fault sweeps away old forest and creates large tracts of clear ground for new vegetation to spring up upon. 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. Although the Alpine Fault seems so obvious today, but it was not recognised until 1941 by two … The glaciers and rivers have removed the rest of the material and spread it out across the lowland plains or onto the sea floor. Forming the western edge of the Southern Alps, it is clearly visible from space. The Alpine Fault marks the boundary of the Pacific and Australian Plates. There were 4 of us on this tour and all enjoyed learning more about the geology of such an impressive landscape. The Alpine Fault is believed to align with the Macquarie Fault Zone in the Puysegur Trench off the southwestern corner of the South Island. This fault has ruptured four times in the past 900 years, each time producing an earthquake of about magnitude 8. 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. Less certain is where the megaquake will hit, but the most likely is a south-to-north quake centred at Milford Sound, with intensity-7, 6 and 5 quakes rippling up the South Island. Photo credit: Project AF8 Whataroa Tourism; Whataroa Hotels; Whataroa Bed and Breakfast; Whataroa Holiday Rentals; Whataroa Packages; Flights to Whataroa; Whataroa Restaurants; Whataroa Attractions Since September, an international team of scientists has b een based on the West Coast drilling into the Alpine Fault - the on-land boundary between the Pacific and Australian tectonic plates. 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 … Your News is the place for you to save content to read later from any device. 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 south-to-north earthquake is most likely along the South Island's Alpine Fault. Although the Alpine Fault seems so obvious today, but it was not recognised until 1941 by … Athy 19 contributions 4 helpful votes. ... Impacts of an Alpine Fault Quake . 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. 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 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. Christchurch 8141, Forming the western edge of the Southern Alps, it is clearly visible from space. 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. 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. Kiwis needed to be concerned about an Alpine Fault quake, as it would likely "happen in the lifetime of many New Zealanders", Orchiston said. This year has continued our recent run of declared states of emergency around the country with what will be the largest All of Government response seen in New Zealand probably since the last world … Earthquakes along the fault have formed the Southern Alps . The Ministry of Civil Defence approved a grant of $680,000 over three years for Project AF8, with work starting in 2016. The Alpine Fault is where two great tectonic plates (the Pacific and Australian) plates collide. Fault line . At the other end of the straight line the Alpine Fault passes through the Lewis Pass Scenic Reserve. Even the trees that have survived an earthquake will bear the scars of the shaking, in the form of periods of poor growth recorded in their rings. Boat Tours in Whataroa; Bus Tours in Whataroa; Walking Tours in Whataroa The Alpine Fault is believed to align with the Macquarie Fault Zone in the Puysegur Trench off the southwestern corner of the South Island. Elisabeth, your guide, has a good knowledge of the Alpine Fault, and to be able to straddle 2 tectonic plates was a real moment to remember. You can pick out the line of the Alpine Fault on this satellite image of the South Island. Image: LEARNZ. . 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 Southern Alps have been uplifted over 20 kilometres over 12 million years but erosion has kept their height below 4,000 metres. The Alpine Fault is believed to align with the Macquarie Fault Zone in the Puysegur Trench off the southwestern corner of the South Island. This fault has ruptured four times in the past 900 years, each time producing an earthquake of about magnitude 8. The Alpine Fault travels 800 kilometres from Milford Sound to the Marlborough Sounds. The fault mover 30mm a year! Postal Address: 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. Dr Caroline Orchiston explains the Alpine Fault and the damage the earthquake will have. The Otago University study said a 200m wide 'fault avoidance zone' should be created to prevent further development in the area. The Alpine Fault marks the boundary of the Pacific and Australian Plates. 8.2b). Imagine what a magnitude-8 earthquake would do. Movement along this fault has uplifted the Southern Alps and produced large earthquakes. Alpine Fault Tours began in 2012 when Gray and Vickie Eatwell bought a farm next to the natural exposure of the Alpine Fault, at Gaunt Creek, near Whataroa in South Westland, New Zealand. A graphic shows an indicative line of the Alpine Fault in relation to Wanaka and Queenstown. 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. Boat Tours in Whataroa; Bus Tours in Whataroa; Walking Tours in Whataroa 32 11. Alpine Fault movement. 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. The length of the rupture will be … 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. Date of experience: November 2020. When the Alpine Fault next ruptures it is likely to produce an earthquake with a magnitude of around 8. Things to do near Alpine Fault Tours. 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. "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.". Most New Zealanders alive today will still be alive when the Alpine Fault rips in … Seismologists regarded the past 30 to 40 years as a period of quiescence in New Zealand as there had been no big on-land earthquakes. 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