A scenario of geophysical events inferred to have preceded the ~1300 AD Kaharoa eruption : lessons for the future

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Sherburn, S.; Nairn, I.A. 2001 A scenario of geophysical events inferred to have preceded the ~1300 AD Kaharoa eruption : lessons for the future . Lower Hutt: Institute of Geological & Nuclear Sciences. Institute of Geological & Nuclear Sciences science report 2001/26 57 p.

Abstract: Insights into the magmatic processes which occurred prior to and during the ~1300AD “Kaharoa” eruption of Tarawera volcano have been obtained from detailed geological and petrological studies of the eruption deposits. We have combined these magmatic insights with geophysical interpretations of the crustal structure beneath Tarawera to produce a conceptual model of the volcano and its processes. The model, enhanced by the addition of geophysical data recorded from recent similar eruptions at other volcanoes, provides a framework for construction of a scenario of the geophysical events likely to have preceded the Kaharoa eruption. Although our geophysical scenario cannot be tested against the actual ~1300AD events, it provides a plausible account of the precursors to be expected before a future Kaharoa-type eruption. (auth)