Sheet 1 Wellington (1st ed.) It consists of two active fault strands, the southeasterly of which carries most of the displacement, as shown by offset drainage patterns. Totara Park – suburb on a fault line. Combined Earthquake Hazard for urban areas in the western Wellington Region. The relationship between a fault and an earthquake was first introduced to us by century geologists in the nineteenth century after the massive 1855 earthquake that took place in Wellington, New Zealand. The Ohariu fault, discovered about 100 years ago, extends northeastward from offshore of the Wellington south coast near Tongue Point through Porirua towards Paraparaumu. A newly released map reveals the extraordinary complexity of Monday morning's monster magnitude-7.8 earthquake. The Wellington Fault runs through the Upper Hutt suburb of Totara Park. GNS Science earthquake geologist … View looking NE, with Thorndon How do we know which fault is most likely to rupture next in Wellington. Those that are considered likely to move again in the future are called active faults. It is a dextral (right-lateral) strike-slip fault with variable amounts of vertical movement causing uplift to the northwest, as expressed by a series of ranges. [12] Institute for Competitiveness & Prosperity (March 2019). Kilometres beneath Wellington the light, thick Australian plate rides over the heavier, but thinner Pacific plate. Many fault lines cut the ground’s surface in New Zealand; each past fault movement would have been accompanied by a large earthquake. State of California. Check out our Wellington Fault video here. But in saying that, New Zealand is riddled with faults, and the main Wellington fault line is massive, joining up with others further up the North Island. These plate movements have resulted in three major fault-lines running either through or very close to Wellington City - the Ohariu Fault, the Wairarapa Fault, and the Wellington Fault. The Wellington Fault consists of three main sections. It is possible that the Māori legend of the formation of Whanganui-a-Tara (Wellington Harbour) derives from an oral record of an early quake along this fault. The dextral slip rate for this section is 4.9–6.2 mm/yr, with a single-event displacement of 4.5±1 m and a recurrence interval of 560–1120 years. 12.2.1 Background. The fault line dominates the greater Wellington region’s landscape and is the most predominant geological feature in the area. Skip to Main Content. Dr Ristau says: "The most noteworthy fault for Wellington is the Wellington fault line which runs right through the city centre and up the Hutt Valley. The Wellington Fault is an active seismic fault in the southern part of the North Island of New Zealand. The fact that Wellington is built on a fault line is not an issue you should ignore either. [1], Although no historic earthquake has been recorded for this fault, the potential impact of rupture along the Wellington-Hutt Valley section on the Wellington area makes it one of the greatest natural hazards in New Zealand. Fault lines in the lower North Island . Major faults that may result in significant earthquakes in the Wellington region include the Alpine Fault, and the Marlborough fault system in the South Island, and the Ohariu Fault, Wellington Fault, Wairarapa Fault, Reikorangi Fault, Otaki Forks Fault, and Wairangi Fault in the North Island. The San Andreas fault is the primary feature of the system and the longest fault in California that can cause powerful earthquakes—as big as magnitude 8. It is when one of these faults … The dextral slip rate for this section is 4.9–7.6 mm/yr, with a single-event displacement of 3.5–5.5 m and a recurrence interval of 500–1120 years. New Zealand's capital city lies within the earthquake-generating collision zone between two of the Earth's great tectonic plates, and sits on top of one of the zone's most active geological faults - the Wellington Fault. Wellington is located on six active faults. Over 75% of people in the Wellington region live within 10 kilometres of the fault. Hazard (Fault Line) Area: Wellington Fault - Map 4 (71KB PDF) Map 54: Hazard (Fault Line) Area: Wellington Fault - Map 5 (66KB PDF) Map 55: Port Noise Emission Levels and Insulation Rules (168KB PDF) Map 56: Ridgelines and Hilltops, Rural North Western - Visibility Areas (181KB PDF) Map 57: A newly released map reveals the extraordinary complexity of Monday morning's monster magnitude-7.8 earthquake. It is a dextral (right-lateral) strike-slip fault with variable amounts of vertical movement causing uplift to the northwest, as expressed by a series of ranges. A fault line or a fault is a fracture in the crust which had the crust moved. The Wellington Fault is an active seismic fault in the southern part of the North Island of New Zealand. What would a major Wellington earthquake be like? Wellington, Central North Island 5.8 magnitude earthquake had no known links to major fault lines - NZ Herald Auckland couple used their children as 'puppet' directors and shareholders in … / Wellington Fault. It has long been thought that the Ohariu fault “dies out” to the north in the Waikanae/Otaki area as a series of splays. Kilometres beneath Wellington the light, thick Australian plate rides over the heavier, but thinner Pacific plate. They are known to have ruptured the … [2] While a major rupture on the Wellington Fault can be expected anytime in the next 500 years, a significant earthquake on other faults in the Wellington area have a shorter 150 year return time. If you are not in an evacuation zone, you don't need to evacuate to higher ground. The location of the faultline between Wellington and the Scarplet in Totara Park was mapped in the 1940s, when the war effort put a new emphasis on … / Wellington Fault / Major Faults in New Zealand / Earthquakes / Science Topics / Learning / Home - GNS Science", https://en.wikipedia.org/w/index.php?title=Wellington_Fault&oldid=951024617, Creative Commons Attribution-ShareAlike License, This page was last edited on 15 April 2020, at 02:46. But in saying that, New Zealand is riddled with faults, and the main Wellington fault line is massive, joining up with others further up the North Island. A large part of the region’s population lives within 50 miles of the San Andreas fault and could be exposed to very strong levels of ground shaking in a major earthquake. Home GNS Science earthquake geologist … Fault lines in the lower North Island . The Blue Lines mark the edge of this zone in parts of our region. Wellington fault lines. It forms part of the North Island Fault System, which accommodates the transfer of displacement along the oblique convergent boundary between the Indo-Australian Plate and Pacific Plate. / Earthquakes Combined Earthquake Hazard for urban areas in the western Wellington Region. The Kaitoke basin is a small pull-apart basin formed at the 2 km lateral offset between this segment and the Tararua segment, near Kaitoke.[2]. ADD TO COLLECTION. When we moved to Wellington we didn’t even consider earthquakes. Wellington owes its distinctive landscape to this fault. Add to new collection; CANCEL. How often do earthquakes occur along the fault? Features in the Wellington Fault line between Cook Strait and the harbour are shown to have a composite origin, and the fault line is shown to be discontinuous. Rights: GNS Science Limited, Lloyd Homer Published 21 July 2007 Size: 570 KB Referencing Hub media. It’s very possible that Wellington in the future will have other strong earthquakes. Along most of its length in the Hutt Valley, the Wellington Fault follows close to the line of the Hutt … The Wellington Fault forms distinctive landscape features running right through the central city. The Wellington Fault is also capable of producing earthquakes of up to magnitude-8. Over 75% of people in the Wellington region live within 10 kilometres of the fault. Intensive research has been done to understand the nature of the fault and the best ways to reduce possible earthquake damage and loss. The California Geological Survey's interactive map allows users to identify the location and classification of faults throughout California. According to Wikepedia “The Wellington Fault is an active seismic fault in the southern part of … [3], "Paleoseismicity of the Wellington – Hutt Valley Segment of the Wellington Fault, North Island, New Zealand", "How often do earthquakes occur along the fault? Wellington City Council's District Plan Change 22 amended the Hazard (Fault Line) Area for the Wellington Fault on district plan maps, and amended a number of district plan provisions relating to the fault hazard. The Canadian Cluster Handbook. Please see our main contact page for more information. Tweet. Please see our main contact page for more information. This zone has been defined by modelling up to magnitude 9 earthquakes on the subduction zone to the east of the North Island, the worst-case scenario modelled for the Wellington Region. This segment is relatively linear with a strike of 033°. Notes on earthquake hazard mitigation measures 1. Some areas may be cut off if your normal access goes through a tsunami … Combined Earthquake Hazard Map 1:30000, Pub . If you are not in an evacuation zone, you don't need to evacuate to higher ground. This section is interpreted to give rise to characteristic earthquakes involving rupture of the entire fault segment, with a single-event displacement of 3.8–4.6 m. The recurrence interval is 500–770 years. A newly discovered active fault line along Wellington's harbour could result in a large quake for the city, scientists say. WRC/RP-T-96/13 Greater Wellington Regional Council, Wellington, New Zealand. Many fault lines cut the ground’s surface in New Zealand; each past fault movement would have been accompanied by a large earthquake. It terminates near Putara. The strike of this section changes from 041° in the south to 020° in the north. The Wellington Fault forms distinctive landscape features running right through the central city. “Ontario divided: Anger, economics and the fault lines that could decide the election.” Globe and Mail. This segment has had a lateral slip-rate of 6.0–7.6 mm per year for at least the last 140,000 years, from the progressive offset of dated river terraces. [1], This 42 km long segment runs from near Putara in the south to near Woodville in the north, where the fault branches into the Ruahine and Mohaka Faults. May 22, 2018. These plate movements have resulted in three major fault-lines running either through or very close to Wellington City - the Ohariu Fault, the Wairarapa Fault, and the Wellington Fault. In an emergency please contact our 24 hour Electricity Emergency Line 0800 248 148 For all other matters, please view our contact details here or call your electricity retailer.. New Zealand's capital city lies within the earthquake-generating collision zone between two of the Earth's great tectonic plates, and sits on top of one of the zone's most active geological faults - the Wellington Fault. They are known to have ruptured the ground surface at … [1], This 75 km long curved fault segment is mapped on the floor of the Cook Strait before crossing the Wellington peninsula through Long Gully and along the northwestern edge of Wellington Harbour, past Lower Hutt terminating near Kaitoke. Wellington Fault: Neotectonics and Earthquake Geology of the Wellington-Hutt Valley Segment John Begg1 Robert Langridge1 Russ Van Dissen1 Timothy Little2 1 GNS Science, Lower Hutt 2 Victoria University of Wellington - photo caption - Fault-line scarp of Wellington-Hutt Valley segment of the Wellington Fault. Intensive research has been done to understand the nature of the fault and the best ways to reduce possible earthquake damage and loss. Features in the Wellington Fault line between Cook Strait and the harbour are shown to have a composite origin, and the fault line is shown to be discontinuous. This zone has been defined by modelling up to magnitude 9 earthquakes on the subduction zone to the east of the North Island, the worst-case scenario modelled for the Wellington Region. Information available includes the age of the most recent activity on each fault segment, surface rupture areas, and whether or not the faults are visible at the surface. The Wellington fault presents a major hazard, as it goes through the heart of New Zealand’s capital city and is crossed by numerous bridges, roads and pipelines. Running in a continuous line from the Bay of Plenty southwards to the Wellington coast, this system has pushed up a line of mountain ranges including the Kawekas, Ruahines, Tararuas and Rimutakas. On the evidence available the fault is not considered to be transcurrent in this sector. Check that the broad indication of hazard from the maps is correct for a particular site. Menu Contact Search The most active fault in the region (ie, the one with the shortest recurrence interval) is the Wellington Fault which extends northwards from the Cook Strait (its most southernmost known location) past the south Wellington shoreline, through Wellington and the Hutt Valley and through the Tararua Range to … For example, parts of the Wellington Fault are under water, covered by river sediment, or modified by urban development, and complex investigations are required to accurately locate it. ... a hard-line democratic socialist, into the Labour leadership. Hazard (Fault Line) Area: Wellington Fault - Map 4 (71KB PDF) Map 54: Hazard (Fault Line) Area: Wellington Fault - Map 5 (66KB PDF) Map 55: Port Noise Emission Levels and Insulation Rules (168KB PDF) Map 56: Ridgelines and Hilltops, Rural North Western - Visibility Areas (181KB PDF) Map 57: The Wellington Fault is a major active fault that runs from Cook Strait, through Wellington City, the harbour, the Hutt Valley and beyond into the Tararua Range. A large part of the region’s population lives within 50 miles of the San Andreas fault and could be exposed to very strong levels of ground shaking in a … / Learning Wellington owes its distinctive landscape to this fault. If we're unable to resolve a complaint, you can call Utilities Disputes on 0800 22 33 40 or visit utilitiesdisputes.co.nz. Fault line under Wellington can generate earthquakes of 6.5 magnitude, but prime minister says talk of moving is ‘fanciful’ Australian Associated Press Wed 8 Oct 2014 00.05 EDT They are very serious and not something you’d want to experience. On the evidence available the fault is not considered to be transcurrent in this sector. The San Andreas fault is the primary feature of the system and the longest fault in California that can cause powerful earthquakes—as big as magnitude 8. / Science Topics The Blue Lines mark the edge of this zone in parts of our region. Wellington is located on six active faults. Click here to use the California fault activity map. [2] The most recent rupture event along this section is constrained to 150–450 yrs BP. No. This shows the fault that runs through the centre of Wellington Harbour and the Hutt Valley. In an emergency please contact our 24 hour Electricity Emergency Line 0800 248 148 For all other matters, please view our contact details here or call your electricity retailer.. The North Island Fault System is a major plate boundary feature in the North Island, under constant stress from movement between the Pacific and Australian plates. Correlation on altitude of certain levels outside the area The 53 km long arcuate Tararua segment starts just north of Kaitoke along the eastern side of the Tararua Range. Correlation on altitude of certain levels outside the area Greater Wellington Regional Council (1996). The fear is that a rupture of magnitude 7.5 or greater along the Wellington Fault will damage road and water links in the capital so badly that its … The fault line dominates the greater Wellington region’s landscape and is the most predominant geological feature in the area. The Wellington fault presents a major hazard, as it goes through the heart of New Zealand’s capital city and is crossed by numerous bridges, roads and pipelines. / Major Faults in New Zealand This shows the fault that runs through the centre of Wellington Harbour and the Hutt Valley. Those that are considered likely to move again in the future are called active faults. It forms part of the North Island Fault System, which accommodates the transfer of displacement along the oblique convergent boundary between the Indo-Australian Plate and Pacific Plate. Wellington's … According to Wikepedia “The Wellington Fault is an active seismic fault in … How much do the Wellington fault lines move? If we're unable to resolve a complaint, you can call Utilities Disputes on 0800 22 33 40 or visit utilitiesdisputes.co.nz. The progressive fault lines facing New Zealand in 2021 and beyond.
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