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Aoraki / Mount Cook is the highest mountain in New Zealand. Its height, as of 2014, is listed as 3,724 metres. It sits in the Southern Alps, the mountain range that runs the length of the South Island. A popular tourist destination, it is also a favourite challenge for mountain climbers. Aoraki / Mount Cook consists of three summits: from south to north, the Low Peak, the Middle Peak and the High Peak. The summits lie slightly south and east of the main divide of the Southern Alps, with the Tasman Glacier to the east and the Hooker Glacier to the southwest. Mount Cook is ranked 10th in the world by topographic isolation.
New Zealand is an island country located in the southwestern Pacific Ocean, near the centre of the water hemisphere. It consists of a large number of islands, estimated around 700, mainly remnants of a larger landmass now beneath the sea. The land masses by size are the South Island and the North Island, separated by the Cook Strait. The third-largest is Stewart Island / Rakiura, located 30 kilometres off the tip of the South Island across Foveaux Strait. Other islands are significantly smaller in area. The three largest islands stretch 1,600 kilometres across latitudes 35° to 47° south. New Zealand is the sixth-largest island country in the world, with a land size of 268,680 km2 (103,740 sq mi).
The Southern Alps are a mountain range extending along much of the length of New Zealand's South Island, reaching its greatest elevations near the range's western side. The name "Southern Alps" generally refers to the entire range, although separate names are given to many of the smaller ranges that form part of it.
The Ahaura River is in the South Island of New Zealand. This river drains the western flanks of the Southern Alps and flows into the Grey River.
The Buller River is a river in the South Island of New Zealand. The Buller has the highest flow of any river in the country during floods, though it is only the 13th longest river; it runs for 177 km (110 mi) from Lake Rotoiti through the Buller Gorge and into the Tasman Sea near the town of Westport. A saddle at 710 m (2,330 ft) separates the Buller from the Motupiko River and that is divided from the Wairau River by a 695 m (2,280 ft) saddle, both aligned along the Alpine Fault, as is the top of the Buller valley.
The Haast River / Awarua is a river on the West Coast of the South Island of New Zealand. The Māori name for the river is Awarua. It drains the western watershed of the Haast Pass. The Haast River is 100 kilometres (62 mi) in length, and enters the Tasman Sea near Haast township. The river's main tributary is the Landsborough River.
The Taramakau River is a river of the West Coast Region of the South Island of New Zealand. It rises in the Southern Alps / Kā Tiritiri o te Moana near Harper Pass, 80 kilometres (50 mi) due east of Hokitika, and runs westward for 75 kilometres (47 mi) into the Tasman Sea 15 kilometres (9.3 mi) south of Greymouth.
The Alpine Fault is a geological fault that runs almost the entire length of New Zealand's South Island, being about 600 km (370 mi). long, and forms the boundary between the Pacific Plate and the Australian Plate. The Southern Alps have been uplifted on the fault over the last 12 million years in a series of earthquakes. However, most of the motion on the fault is strike-slip, with the Tasman district and West Coast moving north and Canterbury and Otago moving south. The average slip rates in the fault's central region are about 38 mm (1.5 in) a year, very fast by global standards. The last major earthquake on the Alpine Fault was in about 1717 AD with a great earthquake magnitude of Mw8.1± 0.1. The probability of another one occurring before 2068 was estimated at 75 percent in 2021.
Lake Poerua is a shallow lake located in the West Coast region of New Zealand's South Island roughly 13 km southeast from Lake Brunner. It is located between the Alexander Range and the slopes of Mount Te Kinga, to the north of the lake. The area around Lake Poerua is sparsely populated. A number of small streams flow into the lake, and the Poerua River flows from the lake into the Crooked River, which leads to Lake Brunner.
Inchbonnie is a rural locality in the West Coast region of the South Island of New Zealand. It is located on the north bank of the Taramakau River and is just to the south of Lake Poerua. "Inchbonnie" is a hybrid of Lowland Scots, bonnie meaning "pretty" and Scottish Gaelic innis meaning island, often anglicised as "Inch", as in Inchkeith or Inchkenneth in Scotland.
Cardrona Alpine Resort is an alpine resort in New Zealand's South Island. The ski field ranges from 1,260m to 1,860m. The distribution of slopes is 20% beginner, 25% intermediate, 30% advanced and 25% expert. There are 2 detachable quad chairlifts, 2 fixed-grip quad chairlifts, 1 detachable express chondola, 3 surface conveyor learner lifts and 1 platter lift to service the halfpipes and big air jump. Snowmaking supplements the 2.9m average annual snowfall. Freestyle Snowboarding and skiing are well catered for with 2 half-pipes and 4 terrain parks. There is also a "high performance centre" which trains more advanced skiers and snowboarders. Families with infants and young children can use child care facilities provided in the Cardrona Nursery and Ski Kindy.
Waimahaka is a locality in the Southland region of New Zealand's South Island. It is situated in a rural area, inland from Toetoes Bay. Nearby settlements include Pine Bush and Titiroa to the northwest, Fortification and Te Peka to the east, Pukewao and Tokanui to the southwest, and Fortrose on the coast to the south.
The 6,300-metre (20,700 ft) deep Puysegur Trench is a deep cleft in the floor of the south Tasman Sea formed by the subduction of the Indo-Australian Plate under the Pacific Plate to the south of New Zealand. Immediately to its east lies the Puysegur Ridge, a northern extension of the Macquarie Ridge, which separates the Puysegur Trench from the Solander Trough. To the west is the expanse of the Tasman Basin, which stretches most of the distance to Australia. To the north of the trench lies the Fiordland Basin, which can be considered an extension of the trench. The Puysegur Trench mirrors the Kermadec Trench and Tonga Trench north of New Zealand.
The Ōhikaiti River is a river of the West Coast Region of New Zealand's South Island. It flows north from Mount Galileo, in the Paparoa Range, paralleling the course of the larger Ōhikanui River which lies two kilometres to the west. The Ōhikaiti empties into the Buller River at the Buller Gorge, 15 kilometres southwest of Westport.
The Ōtoko River is a river of the West Coast Region of New Zealand's South Island. It flows generally northwest from the northern slopes of Mount Hooker, reaching the Paringa River 20 kilometres south of Bruce Bay.
The Marlborough fault system is a set of four large dextral strike-slip faults and other related structures in the northern part of South Island, New Zealand, which transfer displacement between the mainly transform plate boundary of the Alpine fault and the mainly destructive boundary of the Kermadec Trench, and together form the boundary between the Australian and Pacific Plates.
The Wairau Fault is an active dextral strike-slip fault in the northeastern part of South Island, New Zealand. It forms part of the Marlborough Fault System, which accommodates the transfer of displacement along the oblique convergent boundary between the Indo-Australian Plate and Pacific Plate, from the transform Alpine Fault to the Hikurangi Trench subduction zone.
Alpinacris tumidicauda is a species of grasshopper only known from Otago and Southland, New Zealand. The genus Alpinacris is endemic to the South Island of New Zealand. A. tumidicauda was described in 1967 by Robert Sidney Bigelow, with a type locality of Obelisk in the Old Man Range (45°19′22″S169°12′27″E). A male holotype and paratype are deposited in the Canterbury Museum, Christchurch. Like all of New Zealand sub-alpine and alpine grasshoppers, A. tumidicauda has a 2- or 3-year life cycle. The eggs must "overwinter" before they will hatch. Hoppers are found throughout the year, and adult grasshoppers can be found throughout the New Zealand summer between December and April. The adult A. tumidicauda do not overwinter.
The 2016 Kaikōura earthquake was a Mw 7.8 earthquake in the South Island of New Zealand that occurred two minutes after midnight on 14 November 2016 NZDT. Ruptures occurred on multiple faults and the earthquake has been described as the "most complex earthquake ever studied". It has been subsequently modelled as having a megathrust component set off by an adjacent rupture on the Humps Fault. It was also the second largest earthquake since European settlement.
The geology of the West Coast of New Zealand's South Island is divided in two by the Alpine Fault, which runs through the Region in a North-East direction. To the West of the fault Paleozoic basement rocks are interluded by plutones and both are unconformably covered in a sedimentary sequence. To the East of the Alpine Fault are the Mesozoic Alpine Schist and Greywacke of the Southern Alps. There are numerous active faults throughout the region.
References
- ↑ Department of Geology. "Alpine Fault, New Zealand". www.otago.ac.nz. Retrieved 20 January 2023.
- ↑ Cooper, Alan. "The Alpine Fault beside Martyr River, South Westland". teara.govt.nz. New Zealand Ministry for Culture and Heritage Te Manatu Taonga. Retrieved 20 January 2023.
- "Place name detail: Martyr River". New Zealand Gazetteer. New Zealand Geographic Board . Retrieved 12 July 2009.[ dead link ]