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Tongariro volcano (New Zealand): field report from 5 Nov and measurements - elevated degassing

Thu, 15 Nov 2012, 06:52
06:52 AM | BY: T
On 5 November, GeoNet reported that several teams of scientists had been visiting Tongariro's Te Mari Craters to service portable seismometers (complementing four permanent installations), sample gas vents, and collect samples of ejecta.
The report noted that not many earthquakes had been recorded recently, and that the hottest gas vent was 235 degrees Celsius while the others ranged from 95-104 degrees. On 30 October the sulfur dioxide flux was 154 tonnes per day and the carbon dioxide flux was 477 tonnes per day. The volcano continued to actively degas. The Aviation Colour Code remained at Yellow and the Volcanic Alert Level remained at 1 (signs of volcano unrest).

Previous news

Sat, 10 Nov 2012, 08:58

Tongariro volcano (North Island, New Zealand) activity update

Current seismic signal from West Tongariro station (GeoNet)
Compared to most previous weeks and months, seismic activity at the volcano has been calm the past days. ... Read all
Wed, 7 Nov 2012, 08:16

Tongariro volcano (North Island, New Zealand) activity update

Current seismic signal from West Tongariro station (GeoNet)
The volcano continues to show increased degassing mainly from the Te Maari eruption site. The hottest temperature measured from gas vents in this area was 235 °C, while others range from 95 °C to 104 °C (GeoNet). Seismic activity overall has remained low with only few earthquakes. GeoNet maintains alert level 1 and aviation color code yellow. ... Read all
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Tongariro volcano
complex volcano 1978 m / 6,490 ft
North Island, New Zealand, -39.12°S / 175.65°E
Current status: normal or dormant (1 out of 5) Tongariro volcano eruptions:
Eruptions outside Ngauruhoe, mainly on SSE flank (Red Crater): 6 Aug 2012, 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
Typical eruption style
explosive
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