Graham LeonardVolcanic Geologist
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.
- 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
See all publications
- 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.
- Controls on andesitic glaciovolcanism at ice-capped volcanoes from field and experimental studies, Geology 49(9): p. 1069-1073. DOI: 10.1130/G48735.1.
- 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.
- 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.
- Geology of the Tongariro National Park area
- 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.
- Tsunami evacuation zones : Director's Guideline for Civil Defence Emergency Management Groups [DGL 08/16]
- 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.
- Tsunami warning sirens
- 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.
- Warning systems, Encyclopedia of natural hazards : p. 1091-1096.
- 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.
- Tsunami vertical evacuation buildings : lessons for international preparedness following the 2011 Great East Japan tsunami, Journal of Disaster Research 7(sp): p. 446-457.
- Volcanoes : blow up, Awesome forces : the natural hazards that threaten New Zealand : p. 16-35.
- Geology of the Rotorua area : scale 1:250,000
- Public alerting : options assessment
- Volcanism in the central Taupo Volcanic Zone, New Zealand : tempo, styles and controls, Studies in volcanology : the legacy of George Walker : p. 225-247.
- National tsunami signage
- Slumbering giants, A continent on the move : New Zealand geoscience into the 21st century : p. 166-169.
- 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.
- Living on the ring of fire, Life on the edge : New Zealand's natural hazards and disasters : p. 76-115.
- Review of New Zealand's preparedness for tsunami hazard, comparison to risk and recommendations for treatment
- 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.