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Diaporama

Actualitées:

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. ... [details]
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. ... [details]
 

Ruapehu volcan

Stratovolcano 2797 m / 9,176 ft
North Island, New Zealand, -39.28°S / 175.57°E
Condition actuelle: normal / en sommeil (1 sur 5)
Ruapehu webcams / données en temps réel | Reports
Ruapehu livres | Tours
Last update: 17 Apr 2019 (increased crater lake temerature and volcanic tremor)
Style éruptif tipique: Mildly explosive, formation of lahars
Eruptions du volcan Ruapehu: Ruhapehu volcano
HeureMag. / DepthDistanceLocation
Mon, 21 Oct 2019
Mon, 21 Oct 08:48 UTCM 1.4 / 9.6 km21 kmNew Zealand
Mon, 21 Oct 07:20 UTCM 1.1 / 5 km16 kmNew Zealand
Sun, 20 Oct 2019
Sun, 20 Oct 17:06 UTCM 1.1 / 12.3 km5 kmNew Zealand
Sun, 20 Oct 16:42 UTCM 3.2 / 67.9 km12 kmNew Zealand
Fri, 18 Oct 2019
Fri, 18 Oct 08:07 UTCM 0.5 / 15.1 km5 kmNew Zealand
Voir tous
Ruapehu is one of New Zealand's most active volcanoes and forms the highest peak of the North Island. The andesitic stratovolcano has an age of around 200,000 years and contains a large summit crater containing a lake. Eruptions from the vent inside the lake often cause the lake to drain and form dangerous lahars.

Introduction:

Ruapehu is a complex volcanic edifice constructed over several cycles and has a NNE-SSW elongated shape. The cone is surrounded by a large plain formed by debris from flank collapse and lahar deposits.
A series of very explosive (Plinian) eruptions occurred at Ruapehu between about 22,600 and 10,000 years ago. Since then, only one vent has probably been active, Crater Lake in the summit region. Activity in historic time consisted of mild explosive phreatic and phreatomagmatic eruptions often accompanied by lahars threatening the popular ski area on the volcano as well as structures in the surrounding valleys.
An eruption on 24th December 1953 caused a catastrophic lahar that destroyed a rail bridge 42 km from the volcano, just as the Wellington-Auckland passenger train was crossing and fell into the valley, causing 151 fatalities.


Derniers images satellite


See also: Sentinel hub | Landsat 8
 

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