Graham LeonardNatural Hazard and Risk Theme Leader

Department

Natural Hazards & Risks Theme

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Biography

Graham is a Principal Scientist within the Earth Structure and Processes Department. His particular research interests are in Taupo Volcanic Zone volcanic mapping; New Zealand volcanic geology, stratigraphy and geochronology; developing effective response to warning systems, especially for volcanic, tsunami & landslide/debris-flow processes; and quantifying/characterising & mitigating the impacts of natural hazard events.

Qualifications

PhD, Volcanology
BSc, Volcanology

Areas of expertise

Geology: Petrology
Geology: Petrography
Geology: Volcanology
Geology: Hazard Assessment
Geochemist: Trace Element Geochemistry
Geology: Hazard mapping
Geology: GIS mapping
Geology: Field mapping & compilation
Geology: Engineering Geology
Geochronology: Ar-Ar
Social Science: Survey design
Social Science: Interviewing
Social Science: Effective Warning Response
Social Science: Impact Assessment
Social Science: Natural Hazards Research
Social Science: Social Media
Social Science: Community Consultation

Major Publications

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Cole, R.P.; White, J.D.L.; Dürig, T.; Buttner, R.; ZImanowski, B.; Bowman, M.H.; Conway, C.E.; Leonard, G.S.; Pure, L.R.; Townsend, D.B. 2021. Controls on andesitic glaciovolcanism at ice-capped volcanoes from field and experimental studies, Geology 49(9): p. 1069-1073. DOI: 10.1130/G48735.1. p. 1069-1073
Leonard, G.S.; Cole, R.P.; Christenson, B.W.; Conway, C.E.; Cronin, S.J.; Gamble, J.A.; Hurst, A.W.; Kennedy, B.M.; Miller, C.A.; Procter, J.N.; Pure, L.R.; Townsend, D.B.; White, J.D.L.; Wilson, C.J.N. 2021. Ruapehu and Tongariro stratovolcanoes : a review of current understanding, New Zealand Journal of Geology and Geophysics 64(2/3): p. 389-420. DOI: 10.1080/00288306.2021.1909080. p. 389-420
Pure, L.R.; Leonard, G.S.; Townsend, D.B.; Wilson, C.J.N.; Calvert, A.T.; Cole, R.P.; Conway, C.E.; Gamble, J.A.; Smith, T. 2020. A high-resolution ⁴⁰Ar/³⁹Ar lava chronology and edifice construction history for Tongariro volcano, New Zealand, Journal of Volcanology and Geothermal Research 403: article 106993. DOI: 10.1016/j.jvolgeores.2020.106993. article 106993
Wysoczanski, R.; Leonard, G.S.; Gill, J.; Wright, I.; Calvert, A.; McIntosh, W.; Jicha, B.; Gamble, J.; Timm, C.; Handler, M.; Drewes-Todd, E.; Zohrab, A. 2019. Ar-Ar age constraints on the timing of Havre Trough opening and magmatism, New Zealand Journal of Geology and Geophysics 62(3): p. 371-377. DOI: 10.1080/00288306.2019.1602059. p. 371-377
Leonard, G.S.; Calvert, A.T.; Hopkins, J.L.; Wilson, C.J.N.; Smid, E.R.; Lindsay, J.M.; Champion, D.E. 2017. High-precision 40Ar/39Ar dating of Quaternary basalts from Auckland Volcanic Field, New Zealand, with implications for eruption rates and paleomagnetic correlations, Journal of Volcanology and Geothermal Research 343: p. 60-74. DOI: 10.1016/j.jvolgeores.2017.05.033. p. 60-74
Townsend, D.B.; Leonard, G.S.; Conway, C.E.; Eaves, S.R.; Wilson, C.J.N. (compilers) 2017. Geology of the Tongariro National Park area Lower Hutt, N.Z.: GNS Science. GNS Science geological map 4 1 sheet + 109 p., scale 1:60,000
New Zealand Ministry of Civil Defence & Emergency Management 2016. Tsunami evacuation zones : Director's Guideline for Civil Defence Emergency Management Groups [DGL 08/16] Wellington, N.Z.: Ministry of Civil Defence & Emergency Management. 39 p.
Conway, C.E.; Leonard, G.S.; Townsend, D.B.; Calvert, A.T.; Wilson, C.J.N.; Gamble, J.A.; Eaves, S.R. 2016. A high-resolution 40Ar/39Ar lava chronology and edifice construction history for Ruapehu volcano, New Zealand, Journal of Volcanology and Geothermal Research 327: p. 152-179. DOI: 10.1016/j.jvolgeores.2016.07.006. p. 152-179
Leonard, G.S.; Stewart, C.; Wilson, T.M.; Procter, J.N.; Scott, B.J.; Keys, H.J.; Jolly, G.E.; Wardman, J.B.; Cronin, S.J.; McBride, S.K. 2014. Integrating multidisciplinary science, modelling and impact data into evolving, syn-event volcanic hazard mapping and communication : a case study from the 2012 Tongariro eruption crisis, New Zealand, Journal of Volcanology and Geothermal Research 286: p. 208-232. DOI: 10.1016/j.jvolgeores.2014.08.018. p. 208-232
New Zealand Ministry of Civil Defence & Emergency Management 2014. Tsunami warning sirens Wellington, N.Z.: Ministry of Civil Defence & Emergency Management. Technical standard (Ministry of Civil Defence & Emergency Management) 03/14 14 p.
Leonard, G.S.; Johnston, D.M.; Gregg, C.E. 2013. Warning systems, Encyclopedia of natural hazards : p. 1091-1096. p. 1091-1096
Wilson, T.M.; Stewart, C.; Sword-Daniels, V.; Leonard, G.S.; Johnston, D.M.; Cole, J.W.; Wardman, J.B.; Wilson, G.; Barnard, S.T. 2012. Volcanic ash impacts on critical infrastructure, Physics and chemistry of the earth 45/46: p. 5-23. DOI: 10.1016/j.pce.2011.06.006. p. 5-23
Fraser, S.; Leonard, G.S.; Murakami, H.; Matsuo, I. 2012. Tsunami vertical evacuation buildings : lessons for international preparedness following the 2011 Great East Japan tsunami, Journal of Disaster Research 7(sp): p. 446-457. p. 446-457
Leonard, G.S.; Houghton, B. 2012. Volcanoes : blow up, Awesome forces : the natural hazards that threaten New Zealand : p. 16-35. p. 16-35
Leonard, G.S.; Begg, J.G.; Wilson, C.J.N. (comps) 2010. Geology of the Rotorua area : scale 1:250,000 Lower Hutt: GNS Science. Institute of Geological & Nuclear Sciences 1:250,000 geological map 5 102 p. + 1 folded map
New Zealand Ministry of Civil Defence & Emergency Management 2009. Public alerting : options assessment Wellington, N.Z.: Ministry of Civil Defence & Emergency Management. Information for the CDEM sector IS 10/09 50 p.
Wilson, C.J.N.; Gravley, D.M.; Leonard, G.S.; Rowland, J.V. 2009. Volcanism in the central Taupo Volcanic Zone, New Zealand : tempo, styles and controls, Studies in volcanology : the legacy of George Walker : p. 225-247. p. 225-247
Wilson, C.J.N.; Leonard, G.S. 2008. Slumbering giants, A continent on the move : New Zealand geoscience into the 21st century : p. 166-169. p. 166-169
New Zealand Ministry of Civil Defence & Emergency Management 2008. National tsunami signage Wellington, N.Z.: Ministry of Civil Defence & Emergency Management. Technical standard for the CDEM sector TS 01/08 19 p.
Leonard, G.S.; Johnston, D.M.; Paton, D.; Christianson, A.; Becker, J.S.; Keys, H. 2008. Developing effective warning systems : ongoing research at Ruapehu volcano, New Zealand, Journal of Volcanology and Geothermal Research 172(3/4): p.199-215. DOI: 10.1016/j.jvolgeores.2007.12.008. p.199-215
Leonard, G.S.; Lowe, D.J.; McSaveney, E.; Smith, R.; Stewart, C.; Wright, I. 2007. Living on the ring of fire, Life on the edge : New Zealand's natural hazards and disasters : p. 76-115. p. 76-115
Webb, T.H. 2005. Review of New Zealand's preparedness for tsunami hazard, comparison to risk and recommendations for treatment Institute of Geological & Nuclear Sciences client report 2005/162 104 p., appendices
Leonard, G.S.; Cole, J.W.; Nairn, I.A.; Self, S. 2002. Basalt triggering of the c. AD 1305 Kaharoa rhyolite eruption, Tarawera Volcanic Complex, New Zealand, Journal of Volcanology and Geothermal Research 115(3-4): p. 461-486. p. 461-486

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