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Diaporama
Sunday, Aug 23, 2015
On 19 August GeoNet reported that activity at Tongariro's Te Maari Craters had declined significantly since the eruption in 2012, with data suggesting that unrest associated with the eruption was over. ... [details]
Current seismic recording from Tongariro (GeoNet)
Tuesday, Aug 06, 2013
During the past two weeks, GeoNet has been recording very small earthquakes beneath the volcano. The quakes were too small to be located but show up on local seismic stations. ... [details]
 

Tongariro volcan éruptions

volcan complexe 1978 m / 6,490 ft
North Island, New Zealand, -39.12°S / 175.65°E
Liste des éruptions: 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


6 August 2012 eruption
Infrared image of the ash cloud from the eruption of Tongariro (www.stuff.co.nz)A brief but violent phreatic eruption occurred at 23:50 local time on 6 August from new vents near the Te Mari crater of Tongariro.
The explosion followed several weeks of increased earthquakes under the volcano. It produced a 7 km tall ash plume and threw ballistic blocks of up to 1 m diameter to 1.5-2 km distance.

An interesting news article with eyewitness accounts and other information: First Tongariro eruption in over 100 years
 

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