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G.S. Leonard
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Publications

  • Developing effective warning systems: Ongoing research at Ruapehu volcano, New Zealand

    Authors
    Doug Johnston, J. Becker, D. Paton, G.S. Leonard, A. Christianson, H. Keys
    Journal
    Journal of Volcanology and Geothermal Research
    Year
    2008
    Purpose: This paper examines the unique challenges to volcanic risk management associated with having a ski area on an active volcano. Using a series of simulated eruption/lahar events at Ruapehu volc... REGISTER NOW TO SEE MORE
  • Double trouble: Paired ignimbrite eruptions and collateral subsidence in the Taupo Volcanic Zone, New Zealand

    Authors
    Jim W. Cole, Colin J. N Wilson, D.M. Gravley, G.S. Leonard
    Journal
    Bulletin of the Geological Society of America
    Year
    2007
    Large explosive eruptions are generally rare, random events in the history of any particular volcano, volcanic area, or worldwide. In the Taupo Volcanic Zone, New Zealand, temporal clustering of erupt... REGISTER NOW TO SEE MORE
  • Contamination of water supplies by volcanic ashfall: A literature review and simple impact modelling

    Authors
    Doug Johnston, G.S. Leonard, C. Stewart, C.J. Horwell, T. Thordarson, S.J. Cronin
    Journal
    Journal of Volcanology and Geothermal Research
    Year
    2006
    Volcanic ash is the most widely-distributed product of explosive volcanic eruptions, and can disrupt vital infrastructure on a large scale. Previous studies of effects of ashfall on natural waters and... REGISTER NOW TO SEE MORE
  • The nature and age of Ohakuri Formation and Ohakuri Group rocks in surface exposures and geothermal drillhole sequences in the central Taupo Volcanic Zone, New Zealand

    Authors
    Colin J. N Wilson, D.M. Gravley, G.S. Leonard, M.D. Rosenberg
    Journal
    New Zealand Journal of Geology and Geophysics
    Year
    2006
    The name 'Ohakuri' has been applied both as formation and group names to surface deposits and deeply buried deposits recorded in geothermal drillholes in the central Taupo Volcanic Zone (TVZ) of New Z... REGISTER NOW TO SEE MORE