Mount Ngauruhoe
| Mount Ngauruhoe | |
|---|---|
 Ngauruhoe seen fromMount Tongariro | |
| Highest point | |
| Elevation | 2,291 m (7,516 ft) |
| Listing | Mountains of New Zealand |
| Coordinates | 39°09′24.6″S175°37′55.8″E/ 39.156833°S 175.632167°E |
| Naming | |
| Pronunciation | Māori:[ŋaːʉɾʉhɔɛ] |
| Geography | |
  Mount Ngauruhoe New Zealand | |
| Location | North Island,New Zealand |
| Geology | |
| Mountain type | Parasitic cone(active) |
| Volcanicarc/belt | Taupō Volcanic Zone |
| Last eruption | 1977[1] |
| Climbing | |
| First ascent | March 1839 by John C. Bidwill, an Englishbotanist.Two Māori guides came with him to within 1 kilometre of the peak.[2] |
| Easiest route | Scramble(summer) |
Mount Ngauruhoe(Māori:Ngāuruhoe) is a volcanic cone inNew Zealand.It is the youngest vent in theTongarirostratovolcanocomplex on theCentral Plateauof theNorth Islandand first erupted about 2,500 years ago.[3]Although often regarded as a separate mountain, geologically, it is a secondary cone of Mount Tongariro.
The volcano lies between the active volcanoes of Mount Tongariro to the north andMount Ruapehuto the south, to the west of theRangipo Desertand 25 kilometres to the south of the southern shore ofLake Taupō.
Etymology[edit]
The local Māori traditions state that the volcano was named byNgātoro-i-rangi,an ancestor of the local Māoriiwi,Ngāti Tūwharetoa.Ngātoro-i-rangi called volcanic fire from his homelandHawaiki,which eventually emerged at Ngauruhoe.[4] The name given by Ngātoro-i-rangi (Ngāuruhoe) either commemorates his slave, who had died from the cold before the fire arrived,[4]or refers to the insertions (ngā uru) of Ngātoro-i-rangi'shoe(paddle-like staff) into the ground during his summoning of the volcanic fire.
Recent activity[edit]
Ngauruhoe was New Zealand's most active volcano in the 20th century with 45 eruptions, the most recent in 1977.[1][3]Fumarolesexist inside the innercraterand on the rim of the eastern, outer crater. Climbers who suffer fromasthmamay be affected by the strong sulphurous gases emitted from the crater.
A significant increase in earthquake activity in May 2006 prompted thealert levelto be raised from zero (typical background activity, no signs of significant unrest) to one (signs of volcano unrest). Over the next two years GeoNet recorded an average of 5 to 30 earthquakes a day close to Ngauruhoe, though the maximum daily number was as high as 80.
After mid-2008, the number of volcanic earthquakes close to Ngauruhoe declined to the background level. Regular measurements of volcanic gas levels and the temperature of a summit gas vent failed to record any significant changes over the subsequent two and a half years.[5] GNS Science accordingly reduced the alert level for Ngauruhoe to Level 0 on 2 December 2008. “The reduction in earthquake activity means that an eruption in the near future is unlikely without further earthquakes or other changes and the appropriate alert level is therefore zero”, said GNS Science Volcano Section Manager Gill Jolly.
An increase in seismic activity in March 2015 resulted in the alert level being raised to Level 1.[6]The anomalous activity was deemed to have subsided after three weeks, and the alert level was lowered back to Level 0.[7]
Despite these potential indicators, some geologists speculate that activity may have permanently shifted away from the mountain, as the current dormancy is by far the longest in the volcano's relatively short history, and recent eruptions from the parent Tongariro volcanic complex have all been further north.[citation needed]
Climbing[edit]
The mountain is usually climbed from the western side, from the Mangatepopo track. In summer the climb is difficult due to the loosetephrathat gives way underfoot. In the summer of 2010 a climber was seriously injured by falling rock. In winter, snow consolidates the tephra. After rain, the snow may be covered by ice which is treacherous. Ice axes, crampons and ropes are recommended in midwinter. Between March and October the mountain is subject to sudden violent wind gusts and snow storms with the temperature dropping well below freezing.
There is also a route from the northern side which cuts across the lava flows in the Mangatepopo valley from the Mangatepopo hut. This route is far longer with no flat areas. On reaching the summit, climbers can circumnavigate the crater and descend the normal eastern route.
During the closure of the central part of the Mt. Tongariro one day walk, due to volcanic activity, climbing Mt. Ngauruhoe became a popular alternative. At Easter 2013 four climbers were injured in separate incidents. Two of the accidents were due to congestion on the normal eastern route to the crater when a climber caused loose rock to hit another climber below. All the injured had to be rescued by helicopter.[8]
TheDepartment of Conservationhas asked trampers not to climb the mountain, out of respect for itstapu(sacred) nature.[9]
Film appearances[edit]
In 1974, as part of a promotional campaign for his sponsorMoët & Chandon,champion skierJean-Claude Killywas filmed skiing down the previously unskied eastern slope of the mountain. The average slope on this side of the volcano is 35 degrees, and Killy was caught on radar skiing more than 100 miles per hour. As he fell on the first run, he did the descent twice. He used helicopters to access the mountain top when the last eruption had been the day before and an eruption occurred at the end of his final run.[10]
Mount Ngauruhoe was used as a stand-in for the fictionalMount DoominPeter Jackson'sThe Lord of the Ringsfilm trilogy,achieving worldwide exposure.[11][12]
Climbing history[edit]
The first recorded ascent by a European was by J. C. Bidwill in March 1839, the ascent being from the north-west. He reported that “The crater was the most terrific abyss I ever looked into or imagined… it was not possible to see above 10 yards into it from the quantity of steam which it was continually discharging”.
See also[edit]
References[edit]
- ^ab"Tongariro".Global Volcanism Program.Smithsonian Institution.Retrieved6 April2018.
- ^"BIDWILL, John Carne".An Encyclopaedia of New Zealand.Ministry for Culture and Heritage / Te Manatū Taonga. 1966.Retrieved19 February2014.
- ^abErfurt-Cooper, Patricia; Cooper, Malcolm (2010).Volcano and Geothermal Tourism: Sustainable Geo-Resources for Leisure and Recreation.Earthscan. p. 291.ISBN9781849775182.
- ^abJ. Mackintosh Bell (July 1912)."Some New Zealand Volcanoes".The Geographical Journal.40(1): 8–10.Bibcode:1912GeogJ..40....8B.doi:10.2307/1778890.JSTOR1778890.
- ^"GNS Alert Bulletin".GeoNet. Archived fromthe originalon 11 December 2012.Retrieved24 December2013.
- ^"Volcanic Alert Bulletin NGA-2015/01 – Ngauruhoe Volcano".GeoNet.
- ^"Volcanic Alert Bulletin NGA-2015/03 – Ngauruhoe Volcano".GeoNet.
- ^Waikato Times.1 April 2013.
- ^"Trampers told not to climb Tongariro Crossing's Mount Doom".16 October 2017.Retrieved16 February2022.
- ^"Outskiing a Volcano".Skitheworld.com. 26 November 2010.Retrieved5 June2022.
- ^Sibley, Brian.The Making of the Movie Trilogy The Lord of the Rings,Houghton Mifflin(2002).
- ^GNS Science(25 March 2015)."Ngauruhoe".
External links[edit]
