Ruapehu

Volcano number:241100
Region:New Zealand to Fiji
Country:New Zealand
Geodetic measurements?Yes
Deformation observation?Yes
Measurement method(s):InSAR, GPS - campaign, Levelling, EDM
Duration of observation:1970 (trilateration) - present
Inferred cause of deformation:Hydrothermal, Magmatic, Uncertain
Characteristics of deformation:

Dvorak and Dzurisin (1997): Trilateration measurements across the summit crater of Ruapehu, New Zealand, showed that the summit extended only several tens of millimeters before steam explosions, even when measurements were made a few minutes before an explosion [Otway, 1979].

GNS conducts permanent volcanic monitoring and surveillance at all active and potentially active volcanoes in New Zealand.

Reference:Dvorak, J. J., and D. Dzurisin (1997), Volcano geodesy: Dvorak, J. J., and D. Dzurisin (1997), Volcano geodesy: The search for magma reservoirs and the formation of eruptive vents, Rev. Geophys., 35, 343-384, doi:10.1029/97RG00070., Rev. Geophys., 35, 343-384, doi:10.1029/97RG00070
Reference:Dvorak, J. J., and D. Dzurisin (1997), Volcano geodesy: The search for magma reservoirs and the formation of eruptive vents, Rev. Geophys., 35, 343-384, doi:10.1029/97RG00070
Location:175.57, -39.28

View of Ruapehu volcano. Source: Smithsonian Institution Global Volcanism Program