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dc.contributor.authorEfford, Jackson Tai
dc.contributor.authorBylsma, Rebecca Johanna
dc.contributor.authorClarkson, Bruce D.
dc.contributor.authorPittari, Adrian
dc.contributor.authorMauriohooho, Kate
dc.contributor.authorMoon, Vicki G.
dc.date.accessioned2014-12-08T21:25:55Z
dc.date.available2014
dc.date.available2014-12-08T21:25:55Z
dc.date.issued2014
dc.identifier.citationEfford, J. T., Bylsma, R. J., Clarkson, B. D., Pittari, A., Mauriohooho, K., & Moon, V. G. (2014). Vegetation dieback as a proxy for temperature within a wet pyroclastic density current: A novel experiment and observations from the 6th of August 2012 Tongariro eruption. Journal of Volcanology and Geothermal Research, 286, 367–372. http://doi.org/10.1016/j.jvolgeores.2014.05.016en
dc.identifier.issn1872-6097
dc.identifier.urihttps://hdl.handle.net/10289/8925
dc.description.abstractThe 6th of August 2012 eruption of Te Maari (Mt Tongariro, New Zealand) generated wet pyroclastic density currents (PDCs) which caused widespread dieback of vegetation (singed, brown foliage) in their path. An absence of significant charcoal formation suggests that PDC temperatures were mostly below 250 °C. Textural evidence for liquid water being present in the matrices during emplacement (vesicles) suggests that temperatures were b100 °C. We determined a probable minimum PDC temperature using an experiment replicating the critical temperatures required to induce foliar browning in seven species affected by the eruption. In locations where all species exhibited browned foliage (or were defoliated), temperatures were probably ≥64 °C assuming a PDC duration of 60 s. In the more distal areas, where only the most susceptible species were browned while others remained healthy and unaffected, temperatures were probably around 51–58 °C. These results have relevance to volcanic hazard mitigation and risk assessment, especially on the popular Tongariro Alpine Crossing.
dc.format.mimetypeapplication/pdf
dc.language.isoen
dc.publisherElsevier
dc.rightsThis is the authors' accepted version (article in press) for the Journal of Volcanology and Geothermal Research. © 2014 Elsevier B.V.
dc.subjectwet pyroclastic density current
dc.subjecteruption
dc.subjecttemperature
dc.subjectvegetation damage
dc.subjectTongariro
dc.subjectTe Maari
dc.subjectWet pyroclastic density current
dc.subjectEruption
dc.subjectTemperature
dc.subjectVegetation damage
dc.subjectTongariro
dc.subjectTe Maari
dc.titleVegetation dieback as a proxy for temperature within a wet pyroclastic density current: A novel experiment and observations from the 6th of August 2012 Tongariro eruption
dc.typeJournal Article
dc.identifier.doi10.1016/j.jvolgeores.2014.05.016
dc.relation.isPartOfJournal of Volcanology and Geothermal Research
pubs.begin-page367
pubs.elements-id82661
pubs.end-page372
pubs.volumeonline
pubs.volume286
uow.identifier.article-noCen_NZ


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