Te Maari craters hyperspectral imagery
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11 Apr 2018 | Contributor(s):: Gabor Kereszturi
This hyperspectral image cover the 2012 eruption site at Te Maari crater on Tongariro Volcanic Complex in New Zealand. The image has been acquired by the Massey University’s AisaFENIX full-spectrum, pushbroom sensor in early autumn in 2016. It is a 2 m resolution image with 388 spectral...
Viveka Brian Jackson
Constraining conditions for phreatic eruptions and evaluating the influence of hydrothermal alteration on the process: an experimental approach (Vuelco mini conference Barcelona 2013)
20 Mar 2013 | Contributor(s):: Klaus Mayer, Betty Scheu
Phreatic eruptions are caused by rapid evaporation of hydrothermal fluids to steam with the resulting pore overpressure leading to fragmentation of overlying rocks.We investigate White Island (New Zealand) and the active volcanic sites Solfatara and Monte Nuovo in Campi Flegrei (Italy); further...
Constraining edifice stability and phreatic eruptions at White Island, New Zealand (CoV 7 2012)
White Island is New Zealand's most active volcano and is primarily characterised by phreatic and phreatomagmatic eruptions, interspersed by occasional strombolian events. The common occurrence of magma-water interaction at White Island derives from the presence hydrothermal system that induces...
An assessment of hydrothermal alteration in the Santiaguito lava dome complex, Guatemala: implications for dome collapse hazards
28 Feb 2013 | Contributor(s):: Jessica L. Ball, Eliza S Calder, Marc Bernstein
A combination of field mapping, geochemistry, and remote sensing methods has been employed to determine the extent of hydrothermal alteration and assess the potential for failure at the Santiaguito lava dome complex, Guatemala. The 90-year-old complex of four lava domes has only experienced...
Jessica L. Ball