Fr, 14. Dez 2012, 11:05
Current seismic signal from West Tongariro station (GeoNet)
Mo, 26. Nov 2012, 09:53
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.
Mi, 21. Nov 2012, 08:11
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Webcam image of the eruption today (GeoNet)
A brief eruption occurred at Te Maari Craters, Tongariro at approximately 13:25 pm local time today (Wednesday, 21 November 2012).
Read allMi, 21. Nov 2012, 06:00
A small eruption at Tongariro's Te Maari Craters occurred at 1325 on 21 November, without precursory events, prompting GeoNet to raise the Volcanic Alert Level to 2 and the Aviation Colour Code to Red. A report at 1730 noted that the eruption appeared to be over; the Aviation Colour Code was lowered to Orange.
Read allDo, 15. Nov 2012, 06:52
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.
Read allSa, 10. Nov 2012, 08:58
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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.
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Tremor signal during the past 30 days (GeoNet)
Mi, 7. Nov 2012, 08:16
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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.
Mi, 7. Nov 2012, 06:00
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.
Read allMi, 10. Okt 2012, 06:00
On 12 October, the GeoNet Data Centre reported that Tongariro had been degassing after the 6 August eruption from the Te Mari Craters. Gas plumes drifted downwind and were detected a hundred kilometers or more away. During the previous two weeks an odor was noticed in Manawatu (112 km S) and Hawke's Bay (120 km ESE).
Read allMi, 26. Sep 2012, 06:00
The GeoNet Data Centre reported that researchers visited Tongariro's Upper Te Mari Craters on 30 September to sample several of the fumaroles, conduct a carbon dioxide soil gas survey, collect ejecta from the 6-7 August eruption, and photograph the area. They found that the average carbon dioxide soil gas flux was lower than the 27 July measurements; 24 sites had increased fluxes while 20 had decreased. The estimated soil gas emission has decreased from about 5.8 to 2.5 tonnes per day based on these measurements.
Read allSo, 23. Sep 2012, 10:05
GeoNet reported on 20 Sep, that "No further volcanic activity has occurred from the reactivated Upper Te Maari craters on Tongariro. Scientific teams have been busy collecting and analysing data to understand the current unrest.
Read allMi, 15. Aug 2012, 06:00
GeoNet reported that seismic activity at Tongariro remained low during 14-16 August; weather conditions prevented observations of the craters. There were several reports of gas odors on 15 August, particularly from the Manawatu region (S). On 17 August GeoNet noted that although very minor amounts of ash were emitted in the first few days after the eruption, there had been no significant activity since 6 August.
Read allMo, 13. Aug 2012, 10:02
So, 12. Aug 2012, 10:05
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Seismic signal from Tongariro volcano (12 Aug 12)
GeoNet reports little new activity from Tongariro. Seismicity from the volcano has remained low. It is noted that most of the activity visible on the seismograph drums is caused by wind.
Fr, 10. Aug 2012, 08:57
Mi, 8. Aug 2012, 06:00
GeoNet reported that favorable weather allowed GNS Science and Department of Conservation scientists to conduct an observation flight over Tongariro on 8 August. They noted actively steaming vents that were visible at a new crater area formed on 6 August below the Upper Te Mari crater, but low clouds prevented any views above this elevation. Blocks of old and hydrothermally altered lava, as large as 1 m in diameter, ejected by the eruption fell 1.5-2 km from the Te Mari craters area.
Read allMi, 8. Aug 2012, 05:24
This morning, NZ scientists could use a brief window of clear weather to make an overflight of the eruption area which was found to be just below the Upper Te Mari crater, where new steam vents were observed. At the moment, Tongariro is calm, but eruptions could resume any time.
Di, 7. Aug 2012, 07:24
- The eruption started at 11:52 PM (NZ time) and lasted about 30 minutes.
Read allMo, 6. Aug 2012, 22:16
We got great news from our friend and team member Luca Montagni from New Zealand, reporting that Mt. Tongariro volcano has been erupted 11:50 p.m. in the night of Monday/Tuesday 7-8 August. Due to the bad weather there are no visible observations possible that moment.
Sa, 4. Aug 2012, 09:21
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Seismic signal at Tongariro volcano 4 Aug (GeoNet)
Seismic unrest continues with tremor and earthquakes visible on the seismic recordings for Tongariro. No new reports from GeoNet in New Zealand, but the alert level remains at 1.
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Spectrum of seismogramm from Tongariro showing weak volcanic tremor (GeoNet)
Mi, 1. Aug 2012, 07:50
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Seismic signal at Tongariro volcano 1 Aug (GeoNet)
The seismic swarm at Tongariro volcano continues judged on the recent seismic drum plot from GeoNet. Alert remains at 1 (out of 4)
Mi, 1. Aug 2012, 06:00
On 6 August GeoNet reported that volcanic earthquakes continued beneath Tongariro but the size and number had decreased; there were fewer than five events each day. At about 2350 a short-lived (~1-2 minutes) phreatic eruption occurred at the Te Mari craters area, followed by a series of discrete small earthquakes over the next few tens of minutes. The Alert Level was raised to 2 (on a scale of 0-5) and the Aviation Colour Code was raised to Orange (second highest on a four-color scale).
Read allDi, 31. Jul 2012, 06:23
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Recent earthquakes at Tongariro (GeoNet)
Sesimic activity has picked up under Tongariro volcano in New Zealand, GeoNet confirms in its latest bulletin. The earthquake activity had started on 13 July, peaked on 20 July, sharply decreased and picked up again with currently about 3-10 events per day. The earthquakes cluster in a zone between Mount Tongariro and the eastern side of Lake Rotoaira at 2-7 km depth. They are mostly very small and unlikely to be felt.
Read allMo, 30. Jul 2012, 10:05
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Seismic signal at Tongariro volcano 30 July (GeoNet)
A lot of seismic activity appears on the seismograph visible at Tongariro. There are no new reports by Geonet, and the status remains at yellow (1 out of 4).
Fr, 27. Jul 2012, 10:03
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Seismic signal at Tongariro volcano (GeoNet)
Mt. Tongariro volcano remains seismically active, but less than before. There are no further news from GNS science, but the alert level remains at 1.
Mi, 25. Jul 2012, 06:00
On 31 July GeoNet reported that seismicity at Tongariro had declined the previous week but increased again during 28-29 July, and as of 31 July, between 3 and 10 events were being recorded daily. The earthquakes were clustered in a zone between Tongariro and the E side of Lake Rotoaira, at 2-7 km depth. The Alert Level remained at 1 (on a scale of 0-5) and the Aviation Colour Code remained at Yellow (on a four-color scale).
Read allMo, 23. Jul 2012, 10:05
Tongariro volcano is showing signs of a possible awakening. On 13 July 2012, an increase in small (<M2.5) earthquakes was detected. The quakes were clustered at depths of 2-7 km under the area between Emerald crater and Te Mari crater.
Read allMi, 18. Jul 2012, 06:00
A sequence of small volcanic earthquakes beneath Tongariro was detected by a few of the seismometers in the permanent network. Earthquakes with magnitudes less than 2.5 were clustered between Emerald Crater (E of the summit) and the Te Mari craters (2 km E east of Ketetahi hot springs on the N flank) at 2-7 km depth. The sequence started on 13 July, soon declined, and then again increased during 18-20 July.
Read all
