Item: Secondary Alpine Hazards Induced by the 1995-1996 Eruption of Ruapehu Volcano, New Zealand
Title: Secondary Alpine Hazards Induced by the 1995-1996 Eruption of Ruapehu Volcano, New Zealand
Proceedings: Proceedings of the 1996 International Snow Science Workshop, Banff, Canada
- Harry (J.R.) Keys [ Department of Conservation, Private Bag, Turangi, New Zealand ]
Abstract: Hazards due to the 1995-1996 eruption included lahars, ballistic blocks and ashfall, and a wide variety of secondary hazards induced by them, including slab and wet snow avalanches (up to class 3), point releases and secondary lahars. Secondary events (n=120) were noted over a 15 month period. Most started within 3 km of the crater, although two avalanches occurred 11 km away. Secondary lahars were most hazardous but traveled down predictable paths. Ash thicknesses as thin as 5 cm created hazardous secondary lahars that were associated with heavy rain during the spring-autumn of 1995/96. More such events, and wet snow avalanches, seem likely during the 1996 spring or 1996/97 summer.
Language of Article: English
Keywords: secondary hazards, lahar, avalanche, volcanic ash, skifield management
Digital Abstract Not Available