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. 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 … This demonstration allows you to go on a virtual field trip along the Alpine Fault and see some of the key outcrops. 1. 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. The length of the rupture will be … This fault has ruptured four times in the past 900 years, each time producing an earthquake of about magnitude 8. Photo credit: Project AF8 "It was scientifically credible, but also it provided probably the most significant test for Civil Defence around the South Island," Orchiston said. 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. Scroll down to discover how! "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. Whataroa Tourism; Whataroa Hotels; Bed and Breakfast Whataroa; Whataroa Holiday Rentals; Flights to Whataroa; Whataroa Restaurants; Whataroa Attractions; Whataroa Travel Forum 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.". Alpine Fault virtual field trip . 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. 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 Darfield earthquake had a magnitude of M7.1. You can pick out the line of the Alpine Fault on this satellite image of the South Island. The lack of a historical record for the Alpine Fault means that we must instead examine the geological record left by past ruptures. Reviewed 17 December 2016 via mobile . The team developed its co-ordinated response discussions around a south-to-north earthquake as it was most likely, she 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. "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.". 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 … "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.". Horizontal movement of the Alpine Fault is about 30m per 1,000 years — very fast by global standards. The fault mover 30mm a year! 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 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. 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. "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. Co-ordinated Planning and Partnerships Pay Off. 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. Alteration Along the Alpine Fault Helps Build Seismic Strain . Milford Sound is the most likely epicentre for a magnitude-8 earthquake on 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. The alpine fault is located in New Zeland. 2017 is the 300th anniversary of the last major rupture on the 850-km long Alpine Fault. The Alpine Fault is where two great tectonic plates push together. In Newsletter, Response Planning. Alpine Fault Tours, Whataroa Picture: Touching the Alpine Fault! The Alpine Fault is where two great tectonic plates (the Pacific and Australian) plates collide. Brilliant tour, unique occurance, highly informative, very friendly guides. 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. The Bank of New Zealand has received a warning from the Commerce Commission over its likely failure to meet responsible lending requirements … 2017 is the 300th anniversary of the last major rupture on the 850-km long Alpine Fault. Christchurch 8141, 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 glaciers and rivers have removed the rest of the material and spread it out across the lowland plains or onto the sea floor. London, United Kingdom. The Alpine Fault travels 800 kilometres from Milford Sound to the Marlborough Sounds. 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. Earthquakes along the fault have formed the Southern Alps . 8.2b). The rapid uplift also means that faulted rock from deep down has been brought to the surface, and can be studied by scientists. But most dangers would not appear until after the Alpine Fault earthquake, Orchiston said. The Southern Alps have been uplifted on the fault over the last 12 million years in a series of earthquakes. Snow on the mountains of the Pacific plate contrasts with the lower land of the Australian plate. 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. Elizabeth, our tour guide, was very knowledgeable and enthusiastic showing off this area of NZ and explaining how the tectonic plates work. 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. During the Eo‐Oligocene, extensional oblique‐slip (transtension) on these fault systems led to the subsidence and final submergence of Fiordland. The study aims to inform locals and tourists of the significant risk to the area should the Alpine faultline go off. Imagine what a magnitude-8 earthquake would do. We've known about the Alpine Fault for around 80 years. On the go and no time to finish that story right now? 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. Although the Alpine Fault seems so obvious today, but it was not recognised until 1941 by two … 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. Recent research by GNS Science has extended our knowledge of the Alpine fault earthquake record back through the past 8,000 years. Image: LEARNZ. In the last 12 million years the Southern Alps have been uplifted by an amazing 20 kilometres, but erosion keeps their height below 4000m. The Alpine Fault is believed to align with the Macquarie Fault Zone in the Puysegur Trench off the southwestern corner of the South Island. "We call those long-term issues secondary hazards and these hazards can be more extreme than the earthquake itself.". Movement along this fault has uplifted the Southern Alps and caused large earthquakes. In the North. How often does the Alpine Fault rupture? The length of the rupture will be … The Alpine Fault runs for about 600km up the spine of the South Island, and is one of the world’s major geological features. Preparing for the big one on the Alpine Fault, Team granted funding to plan response for Alpine Fault megaquake, Lunchtime sightseeing trip in new helicopter ends with fatal crash, Transport Agency employee breaching learner licence kills motorcyclist, This could be the worst Parliament since MMP unless urgent changes are made, Pilot injured after helicopter crash in Hawke's Bay, Auckland mum appalled after school staff member put tape on her son's mouth, Quiz: Morning trivia challenge: December 16, 2020, Coastal residents’ fight for their homes comes to an end, Covid-19: Rest home volunteer dressed as Santa infects 75 residents in super-spreader event, In a first, leading Republicans call Joe Biden US president-elect, Distressed investors handed over more than $13m to missing Australian woman Melissa Caddick. 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. Helpful. * 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 … Motion on the fault is in a direction that plunges approximately 22°, indicating that the fault in … Forming the western edge of the Southern Alps, it is clearly visible from space. The seismicity rate of the Alpine fault is low but comparable to locked sections of the San Andreas fault, with large earthquakes expected. It is a dominant feature of the South Island. Camp Glenorchy project manager Steve Hewland talks about the resilience factors of the newly-built camping ground near Queenstown. Whataroa Tourism; Whataroa Hotels; Whataroa Bed and Breakfast; Whataroa Holiday Rentals; Whataroa Packages; Flights to Whataroa; Whataroa Restaurants; Whataroa Attractions A graphic shows an indicative line of the Alpine Fault in relation to Wanaka and Queenstown. 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. Although the Alpine Fault seems so obvious today, but it was not recognised until 1941 by … "What we're seeing is a very long history of seismic activity on the fault, which is a really unique record," Orchiston said. 0. Image: NASA. Things to do near Alpine Fault Tours. Can't find Fault. Home » Co-ordinated Planning and Partnerships Pay Off . Forming the western edge of the Southern Alps, it is clearly visible from space. 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. The Alpine Fault was inferred to continue south-west from Lake McKerrow along the northern Fiord-land Coast (see also Grindley, 1958). How do you think you would be affected by a rupture of the Alpine Fault? "When we think of earthquakes, our mind goes straight to shaking, straight to the panic we feel when the ground moves," Orchiston said. The Alpine Fault. A south-to-north earthquake is most likely along the South Island's Alpine Fault. Photo: RNZ / Veronika Meduna. How often does the Alpine Fault rupture? 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 400km up the South Island, along the western edge of the Southern Alps. Whataroa Tourism; Whataroa Accommodation; Whataroa Bed and Breakfast; Whataroa Holiday Rentals; Whataroa Holiday Packages; Whataroa Flights; Whataroa Restaurants - Check out Tripadvisor members' 349 candid photos and videos of Alpine Fault Tours 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. Each time it has ruptured, it has also moved vertically, lifting the Southern Alps in the process. Awesome experience. "The intensity of course depends on the type of ground you're standing on and how far away you are from the Alpine Fault. 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. Movement along this fault has uplifted the Southern Alps and produced large earthquakes. There is no way of predicting exactly when an earthquake will occur. 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 runs for about 600km along the west 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. 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. 32 11. In between earthquakes, the Alpine Fault is locked. 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. 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 … Fault line . 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. Athy 19 contributions 4 helpful votes. . 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 . 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. Date of experience: November 2020. The alpine fault earthquake will alter tectonic stress distribution, and other faultlines may rupture in the days or years following it. This is now most evident in the Southern Alps, formed by compression of the crust beside the Alpine Fault. 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. No matter where you were in the South Island, you would feel at least a magnitude-4 or 5 quake, she 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. 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. 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 7.8-magnitude Kaikōura earthquake ripped road and rail apart. Posted June 9, 2020. Alpine Fault movement. 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. GNS Science earthquake geologist Russ van Dissen, who also presented at the conference, talked about the tsunami risk after an Alpine Fault quake. 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. 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