The investigation found the mean interval between large earthquakes on the fault is 330 years and two thirds of the intervals were between 260 and 400 years. Although the Alpine Fault seems so obvious today, but it was not recognised until 1941 by … Dr Caroline Orchiston explains the Alpine Fault and the damage the earthquake will have. Things to do near Alpine Fault Tours. 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. “Hands on Alpine Fault learnings plus a bush short walk in Whataroa ... Read reviews in English Go back. 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. This is based on how regularly it has ruptured in the past. In the last 12 million years the Southern Alps have been uplifted by an amazing 20 kilometres, but erosion keeps their height below 4000m. Forming the western edge of the Southern Alps, it is clearly visible from space. The investigation found the mean interval between large earthquakes on the fault is 330 years and two thirds of the … "It was scientifically credible, but also it provided probably the most significant test for Civil Defence around the South Island," Orchiston said. Snow on the mountains of the Pacific plate contrasts with the lower land of the Australian plate. Elizabeth, our tour guide, was very knowledgeable and enthusiastic showing off this area of NZ and explaining how the tectonic plates work. Scientists believe the Alpine Fault has a high probability (estimated at 30%) of rupturing in the next 50 years. The other options are a north-to-south tear starting in Greymouth and heading southwest, or an epicentre near Fox Glacier, heading up and down the fault. A graphic shows an indicative line of the Alpine Fault in relation to Wanaka and Queenstown. An earthquake on the Alpine Fault sweeps away old forest and creates large tracts of clear ground for new vegetation to spring up upon. * Alpine Fault moves more than any other fault in the world * Alpine Fault spreads across South Island, researchers say * When, not if: Alpine fault could cause 8 … Awesome experience. 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. This is now most evident in the Southern Alps, formed by compression of the crust beside the Alpine Fault. The Bank of New Zealand has received a warning from the Commerce Commission over its likely failure to meet responsible lending requirements … 20 years earlier, they had been in tourism in Fiordland NZ, taking international visitors on overnight cruises to see the fiords - and this will become relevant in a moment. The Alpine Fault is believed to align with the Macquarie Fault Zone in the Puysegur Trench off the southwestern corner of the South Island. Filter. 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 … Updating list... 20 - 25 of 26 reviews. Date of experience: November 2020. 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. Movement along this fault has uplifted the Southern Alps and caused large earthquakes. "The intensity of course depends on the type of ground you're standing on and how far away you are from the Alpine Fault. GNS Science earthquake geologist Russ van Dissen, who also presented at the conference, talked about the tsunami risk after an Alpine Fault quake. It forms a boundary between the Pacific Plate and the Indo-Australian Plate . Image: LEARNZ. It’s the part of the active boundary between the Pacific and Australian tectonic plates where they intersect on land. 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 Alpine Fault is where two great tectonic plates (the Pacific and Australian) plates collide. Boat Tours in Whataroa; Bus Tours in Whataroa; Walking Tours in Whataroa 2017 is the 300th anniversary of the last major rupture on the 850-km long Alpine 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. How often does the Alpine Fault rupture? 01donala. Alpine Fault virtual field trip . The Alpine Fault runs 400km up the South Island, along the western edge of the Southern Alps. 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. 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 "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.". Alpine Fault movement. "When we think of earthquakes, our mind goes straight to shaking, straight to the panic we feel when the ground moves," Orchiston said. 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. The Alpine Fault splits the South Island in two, and forms the abrupt western edge of the Southern Alps. The Alpine Fault is believed to align with the Macquarie Fault Zone in the Puysegur Trench off the southwestern corner of the South Island. Movement along this fault has uplifted the Southern Alps and produced large earthquakes. The glaciers and rivers have removed the rest of the material and spread it out across the lowland plains or onto the sea floor. Affect a much larger area than earthquakes such as the Darfield earthquake. 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. 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. The rapid uplift also means that faulted rock from deep down has been brought to the surface, and can be studied by scientists. The Alpine Fault is a geological fault that runs entirely through New Zealand's South Island. By Alice Lake-Hammond. This fault has ruptured four times in the past 900 years, each time producing an earthquake of about magnitude 8. Most New Zealanders alive today will still be alive when the Alpine Fault rips in … The alpine fault is located in New Zeland. 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 … 32 11. The 7.8-magnitude Kaikōura earthquake ripped road and rail apart. The Alpine Fault is where two great tectonic plates push together. Things to do near Alpine Fault Tours. 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. 0. The seismicity rate of the Alpine fault is low but comparable to locked sections of the San Andreas fault, with large earthquakes expected. But most dangers would not appear until after the Alpine Fault earthquake, Orchiston said. 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. 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 Southern Alps have been uplifted over 20 kilometres over 12 million years but erosion has kept their height below 4,000 metres. Athy 19 contributions 4 helpful votes. There were 4 of us on this tour and all enjoyed learning more about the geology of such an impressive landscape. The lack of a historical record for the Alpine Fault means that we must instead examine the geological record left by past ruptures. 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 development of the basins of southwest New Zealand is related to the behaviour of the Fiordland microplate, a rigid block of continental crust located between the Moonlight and Alpine fault systems. On the go and no time to finish that story right now? "We call those long-term issues secondary hazards and these hazards can be more extreme than the earthquake itself.". This fault has ruptured four times in the past 900 years, each time producing an earthquake of about magnitude 8. Whataroa Tourism; Whataroa Accommodation; Whataroa Bed and Breakfast; Whataroa Holiday Rentals; Whataroa Holiday Packages; Whataroa Flights; Whataroa Restaurants Forming the western edge of the Southern Alps, it is clearly visible from space. Whataroa Tourism; Whataroa Hotels; Whataroa Bed and Breakfast; Whataroa Holiday Rentals; Whataroa Packages; Flights to Whataroa; Whataroa Restaurants; Whataroa Attractions South Island and those that are Cl1!t off to the north-west by the Alpine Fault at the south end of the island. Spot the fault. When the Alpine Fault next ruptures it is likely to produce an earthquake with a magnitude of around 8. Otago University research fellow Caroline Orchiston detailed the group's work at a public meeting in Blenheim on Wednesday. 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 length of the rupture will be … The Alpine Fault, running up the South Island, has an earthquake nearly every 300 years. Alpine Fault Tours, Whataroa Picture: Touching the Alpine Fault! "But earthquakes are just the start of a process that goes on for many years, decades after a big earthquake of this scale. David B wrote a review Feb 2020. Dr Caroline Orchiston explains the Alpine Fault and the damage the earthquake will have. London, United Kingdom. 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. That's before satellite photographs or plate tectonics. 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 . 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. The Southern Alps have been uplifted on the fault over the last 12 million years in a series of earthquakes. 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 … 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 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. 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. During the Eo‐Oligocene, extensional oblique‐slip (transtension) on these fault systems led to the subsidence and final submergence of Fiordland. The: pre-Cretaceous rock belts and the faults are clearly shown on the 1958 Geological Map of New Zealand. 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. 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. 8.2b). Your News is the place for you to save content to read later from any device. 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. This fault has ruptured four times in the past 900 years, each time producing an earthquake of about magnitude 8. The Ministry of Civil Defence approved a grant of $680,000 over three years for Project AF8, with work starting in 2016. Reviewed 17 December 2016 via mobile . Caroline Orchiston says the Alpine Fault is a "spectacular" fault. 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 demonstration allows you to go on a virtual field trip along the Alpine Fault and see some of the key outcrops. There is no way of predicting exactly when an earthquake will occur. Co-ordinated Planning and Partnerships Pay Off. Whataroa Tourism; Whataroa Hotels; Whataroa Bed and Breakfast; Whataroa Holiday Rentals; Whataroa Packages; Flights to Whataroa; Whataroa Restaurants; Whataroa Attractions Home » Co-ordinated Planning and Partnerships Pay Off . 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. The Alpine Fault runs for about 600km along the west of the Southern Alps. The 2004 Boxing Day tsunami and the 2011 liquefaction of buildings in Christchurch were two past examples of secondary hazards, she said. Image: NASA. The alpine fault earthquake will alter tectonic stress distribution, and other faultlines may rupture in the days or years following it. This fault has ruptured four times in the past 900 years, each time producing an earthquake of about magnitude 8. The Alpine Fault marks the boundary of the Pacific and Australian Plates. Motion on the fault is in a direction that plunges approximately 22°, indicating that the fault in … There have been no major earthquakes on the main portion of it. In the North. Earthquakes along the fault have formed the Southern Alps . The fault mover 30mm a year! The geological record shows the Alpine Fault ruptures, on average, just under every 300 years. Each time it has ruptured, it has also moved vertically, lifting the Southern Alps in the process. Tree ages in this entire region are therefore clustered around the times of major earthquakes. 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. 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. Recent research by GNS Science has extended our knowledge of the Alpine fault earthquake record back through the past 8,000 years. Approximate rupture dates are 1717AD, 1620 AD, 1450 AD, and 1100 AD. Read more. The Darfield earthquake had a magnitude of M7.1. Scroll down to discover how! The Alpine Fault is believed to align with the Macquarie Fault Zone in the Puysegur Trench off the southwestern corner of the South Island. Image: LEARNZ. The length of the rupture will be … The Alpine Fault is believed to align with the Macquarie Fault Zone in the Puysegur Trench off the southwestern corner of the South Island. How often does the Alpine Fault rupture? Posted June 9, 2020. [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. Christchurch 8141, 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 study aims to inform locals and tourists of the significant risk to the area should the Alpine faultline go off. 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). . Postal Address: The Otago University study said a 200m wide 'fault avoidance zone' should be created to prevent further development in the area. 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 team developed its co-ordinated response discussions around a south-to-north earthquake as it was most likely, she said. 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 will visit Franz Josef which sits above the Alpine Fault on the Geohazards virtual field trip. 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. ... Impacts of an Alpine Fault Quake . 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. "For those of you who felt the earthquake in Kaikōura, those many minutes of shaking, this [the Alpine Fault earthquake] will feel similar for you in Marlborough.". 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. Milford Sound is the most likely epicentre for a magnitude-8 earthquake on the Alpine Fault. It is a dominant feature of the South Island. 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 marks the boundary of the Pacific and Australian Plates. The Alpine Fault. - Check out Tripadvisor members' 349 candid photos and videos of Alpine Fault Tours The Alpine Fault was inferred to continue south-west from Lake McKerrow along the northern Fiord-land Coast (see also Grindley, 1958). "What we're seeing is a very long history of seismic activity on the fault, which is a really unique record," Orchiston said. At the other end of the straight line the Alpine Fault passes through the Lewis Pass Scenic Reserve. Movement along the Alpine Fault has uplifted the Southern Alps. 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. Share. The Alpine Fault runs for about 600km up the spine of the South Island, and is one of the world’s major geological features. . Whataroa Tourism; Whataroa Hotels; Bed and Breakfast Whataroa; Whataroa Holiday Rentals; Flights to Whataroa; Whataroa Restaurants; Whataroa Attractions; Whataroa Travel Forum 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. 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. 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. Most New Zealanders alive today will still be alive when the Alpine Fault rips in a magnitude-8 earthquake, leading scientists say. 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 . PO Box 13 678, Horizontal movement of the Alpine Fault is about 30m per 1,000 years — very fast by global standards. "The Alpine Fault is a spectacular fault, it's more than 800 kilometres long at its full extent," Orchiston said. 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. Virtual field trip along the Alpine Fault and see some of the South Island shows the Alpine is. Of around 8 forest and creates large tracts of clear ground for New vegetation to spring up upon of magnitude. Caroline Orchiston detailed the group 's work at a public meeting in Blenheim on Wednesday for 800km. Sea floor strike slip or transform Fault will alter tectonic stress distribution, and other may... 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