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Random pictures
Ruapehu volcano sat by (c) Google Earth View
Ruapehu volcano sat by (c) Google Earth View
Ruapehu volcano
Stratovolcano 2797 m / 9,176 ft
North Island, New Zealand, -39.28°S / 175.57°E
Current status: normal or dormant (1 out of 5)
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Ruapehu volcano eruptions:

Typical eruption style:
Mildly explosive, formation of lahars
Last earthquakes nearby
Latest satellite images

Sentinel hub | Landsat 8
 

News and activity reports about Ruapehu volcano:

Ruapehu volcano (North Island, New Zealand): increased seismic activity

Tuesday Mar 03, 2020 08:17 AM | BY: MARTIN

Ruapehu volcano today (image: GeoNet)
Ruapehu volcano today (image: GeoNet)
GeoNet volcanologists have collected water samples from Crater Lake and measured volcanic gases in the plume last week. Seismic data have been analysed in detail.
The amounts of carbon dioxide (CO2) and sulphur gases (SO2 and H2S) have increased since the last measurements on 7th February 2020. Water samples are being analysed this week, with chemistry results expected by next week.
New analysis of last week’s volcanic earthquakes defines a source area 3 km beneath the summit of the volcano, which is normal for seismic activity at Ruapehu. Volcanic tremor increased in strength briefly last weekend, then declined during the week, and has now increased again to similar levels.
In response to the earthquakes last week, Crater Lake (Te Wai ā-moe) has slowly heated from 24ºC and is currently at 30ºC. Upwelling of grey sediment and sulphur slicks on the lake surface were observed during the last week. The flow of gases and hydrothermal fluids though the lake show that the underlying vent area is open.
It is not unusual to observe volcanic earthquakes at Ruapehu and similar episodes of increased seismic activity and gas flux were observed during March 2018 and 2019, September 2017 and April 2016. None of these resulted in a sustained increase in volcanic unrest.
Both the Volcanic Alert Level (level 1) and Aviation Code (Green) remain unchanged.
Source: GeoNet New Zealand volcano activity update 3 March 2020
Previous news
Ruapehu volcano today (image: Geonet)
Monday, Feb 24, 2020
GeoNet reported that seismographs detected a sequence of seismic events beneath Mt Ruapehu during 22-23 February. GNS Science volcanologists have categorised them as volcanic earthquakes. The larger events at the start of the episode are approximately magnitude 1.5 and later, smaller events are too small to be located by GeoNet’s earthquake detection-location system. ... [more]
Ruapehu volcano today (image: Geonet)
Wednesday, Jan 15, 2020
GeoNet reported that the activity of volcanic tremor continues at low levels. Measurements of the volcano’s Crater Lake (Te Wai ā-moe) temperature, and chemistry remained consistent in combination with seismic unrest. ... [more]
The Ruapehu crater lake during winter. (image: GNS Science)
Wednesday, Apr 17, 2019
Another phase of increased crater lake temperatures has been recorded at the Te Wai ā-moe (Crater Lake) Mt Ruapehu in combination with moderate levels of volcanic tremor. ... [more]
Tremor spectrum and amplitude at Ruapehu volcano (GeoNet)
Monday, Nov 07, 2016
Volcanic tremor (which is normally present at the volcano) has increased a notch since mid October, but not enough to trigger a raise in alert status of the volcano (which remains at level 1). New Zealand's GNS Science issued a note but does not expect the volcano to erupt soon. ... [more]
Ruapehu's crater lake in August 2016 (image: Geonet)
Friday, Sep 09, 2016
After reaching record-low temperatures in August, the volcano's closely-monitored crater lake has started to heat up very quickly since 2 September, Geonet reported. ... [more]

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