The effects of hydrothermal eruptions and a tectonic earthquake on a cycling crater lake (Inferno Crater Lake, Waimangu, New Zealand) - Archive ouverte HAL Access content directly
Journal Articles Journal of Volcanology and Geothermal Research Year : 2008

The effects of hydrothermal eruptions and a tectonic earthquake on a cycling crater lake (Inferno Crater Lake, Waimangu, New Zealand)

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Abstract

The lake level and temperature of Inferno Crater Lake, a hot lake in the Waimangu Geothermal Field, vary in quasi-regular cycles with a period of about 30 to 50 days. Between 1970 and 1991, several hydrothermal eruptions at other sites within the Waimangu system affected this cycling, especially the cycle period. This indicated that although the cycling was most evident in one small lake, it was sensitive to any changes in the surrounding geothermal system. After the Raupo Pond eruption, which produced the largest effects, the recovery of the temperature and cycle period was consistent with extra energy diffusing out of the previously proposed heat pipe system. The 1987 Edgecumbe earthquake, whose hypocenter was 50 km from Waimangu, also seems to have significantly affected the hydrothermal system, reducing the cycle period for at least a year afterwards.

Dates and versions

insu-00372183 , version 1 (31-03-2009)

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Cite

J. Vandemeulebrouck, A.W. Hurst, B.J. Scott. The effects of hydrothermal eruptions and a tectonic earthquake on a cycling crater lake (Inferno Crater Lake, Waimangu, New Zealand). Journal of Volcanology and Geothermal Research, 2008, 178 (2), pp.271 à 275. ⟨10.1016/j.jvolgeores.2008.06.021⟩. ⟨insu-00372183⟩
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