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Unusual “snow slurry” lahars from Ruapehu volcano, New Zealand, September 1995
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1996
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VolcanologyEngineeringVolcanismGeomorphologyEarth ScienceCrater Lake WaterGeological DataVolcanic ProcessGeographyGeologySnow SlurryTectonicsRuapehu VolcanoMud VolcanoNew ZealandEconomic GeologyEarth SciencesGeochemistryLaharSeptember 1995Pyroclastic Flow
Research Article| December 01, 1996 Unusual "snow slurry" lahars from Ruapehu volcano, New Zealand, September 1995 Shane J. Cronin; Shane J. Cronin 1Department of Soil Science, Massey University, Private Bag 11 222, Palmerston North, New Zealand Search for other works by this author on: GSW Google Scholar Vincent E. Neall; Vincent E. Neall 1Department of Soil Science, Massey University, Private Bag 11 222, Palmerston North, New Zealand Search for other works by this author on: GSW Google Scholar Jérôme A. Lecointre; Jérôme A. Lecointre 1Department of Soil Science, Massey University, Private Bag 11 222, Palmerston North, New Zealand Search for other works by this author on: GSW Google Scholar Alan S. Palmer Alan S. Palmer 1Department of Soil Science, Massey University, Private Bag 11 222, Palmerston North, New Zealand Search for other works by this author on: GSW Google Scholar Geology (1996) 24 (12): 1107–1110. https://doi.org/10.1130/0091-7613(1996)024<1107:USSLFR>2.3.CO;2 Article history first online: 02 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Shane J. Cronin, Vincent E. Neall, Jérôme A. Lecointre, Alan S. Palmer; Unusual "snow slurry" lahars from Ruapehu volcano, New Zealand, September 1995. Geology 1996;; 24 (12): 1107–1110. doi: https://doi.org/10.1130/0091-7613(1996)024<1107:USSLFR>2.3.CO;2 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGeology Search Advanced Search Abstract The first lahars of the 1995 Ruapehu eruptive sequence were generated by explosively ejected Crater Lake water, sediment, and juvenile material, which incorporated snow and ice to form "snow slurry" lahars. On September 18, small amounts of Crater Lake water were ejected, which mobilized large amounts of snow. This was because unstable seasonal snow pack was present in the lahar flow path. Five days later, a larger volume of water was ejected but proportionally less snow was mobilized. Beyond the volcanic cone, the initially homogenized snow slurries segregated into watery flows with a floating snow-slurry cap. Frozen deposits were emplaced as far as 45 km from the source and 1840 m lower in altitude. More than 50% of the sediment within the flow was derived from the initial eruption; the remainder was entrained before it reached 9.5 km. Beyond 9.5 km from the source, the flows progressively lost their gravel and sand. This content is PDF only. Please click on the PDF icon to access. First Page Preview Close Modal You do not have access to this content, please speak to your institutional administrator if you feel you should have access.