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Tongariro volcan
volcan complexe 1978 m / 6,490 ft
North Island, New Zealand, -39.12°S / 175.65°E
Condition actuelle: normal / en sommeil (1 sur 5)
Tongariro webcams / données en temps réel | Reports
Tongariro livres
Eruptions du volcan Tongariro:
Eruptions outside Ngauruhoe, mainly on SSE flank (Red Crater): 1927 (?), 1926, 1896, 1890 (?), 1886, 1885±1, 1869, 1859, 1855, 1500 ± 50, 550 BC ± 200 years, 9350 BC (?), 9450 BC (?), 9650 BC (?), 9850 BC (?)
Eruptions from Ngauruhoe vent: 1975-77, 1972, 1968-69, 1962, 1958-59, 1956, 1948-54, 1939-40, 1937, 1934, 1931, 1924-28, 1917, 1913-14, 1909-10, 1904-07, 1897-98, 1892, 1883, 1881, 1878, 1875, 1869-70, 1862-64, 1857, 1844, 1841, 1839, 550 BC ± 200
Style éruptif tipique:
Derniers séismes proches
Derniers images satellite

Sentinel hub | Landsat 8

Tongariro volcano news & activity updates

Tongariro volcano (New Zealand): unrest and volcanic gas emissions continue, alert level unchanged

mardi janv. 22, 2013 05:43 | AUTEUR : T

Picture of Upper Te Maari Crater looking south west. The main Upper Te Maari Crater is in the centre with the main gas discharge area to the left (east) at the head of the prominent fissure running to the base of the picture. (GeoNet)
Picture of Upper Te Maari Crater looking south west. The main Upper Te Maari Crater is in the centre with the main gas discharge area to the left (east) at the head of the prominent fissure running to the base of the picture. (GeoNet)
Tongariro's current status remains characterized by strong degassing from the Te Maari craters, the site of eruptions in August and November 2012. At present, seismic activity is low. This activity is likely to go on several years, but Tongariro could produce new eruptions with little or no precursors, New Zealand's GNS writes in its recent update:
The Te Maari craters at Mount Tongariro continue to be active with continuous emissions of steam and volcanic gas. Emission of a steam and gas plume has been a continuous feature of the mountain since the August 2012 eruption. The gas is coming from a large fumarole and crack in a cliff just east of the Upper Te Maari crater. The main Upper Te Maari crater is also discharging gas but at a lesser rate. Fumaroles associated with a fissure farther to the east have declined and are no longer easily visible.

Volcanic gas from the plume may continue to be smelt in areas downwind of the volcano. GNS Science volcanologists will be making gas measurements at the next available opportunity to compare to those made at the end of December 2012, however recent visual observations show that the emissions are on-going and sustained. Observers of the mountain may notice that emissions appear to be stronger on some days than others, which is due to a combination of variability in the degassing rate and atmospheric conditions which make the plume more visible on some days. GNS head volcanologist Gill Jolly said “gas and steam emissions from the volcano will continue to be a feature of the mountain for several years to come.”

Aerial observations at the end of 2012 showed that a large amount of material had in-filled the Upper Te Maari crater as part of the 21 November 2012 eruption, however the main shape of the crater had not changed.

Seismicity has remained relatively low with no earthquakes yet recorded beneath the mountain in 2013.

The Volcano Alert Level remains at 1 and the Aviation Colour Code remains at Yellow.
Actualités précédentes
Current seismic signal from West Tongariro station (GeoNet)
vendredi, janv. 11, 2013
Some local earthquakes are visible at the recent seismic recording. [details]

jeudi, janv. 03, 2013
A series of small earthquakes have recently been occurring at the volcano. [details]
Current seismic signal from West Tongariro station (GeoNet)
vendredi, déc. 14, 2012
Small earthquakes continue at the volcano. [details]
lundi, nov. 26, 2012
The GeoNet reported on Facebook that ejecta from the November 21 eruption has been analysed and that 1% of the ejected material was fresh magma. ... [details]
Webcam image of the eruption today (GeoNet)
mercredi, nov. 21, 2012
A brief eruption occurred at Te Maari Craters, Tongariro at approximately 13:25 pm local time today (Wednesday, 21 November 2012). ... [details]

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Plus d'info:
News | 2012 eruption
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