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  • Rights: The University of Waikato
    Published 9 April 2010 Referencing Hub media
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    Dr Jan Lindsay describes the DEVORA project – DEtermining VOlcanic Risk in Auckland. We learn about what the scientists are studying to try and determine what, when and how the next volcanic eruption might occur.

    Transcript

    DR JAN LINDSAY
    DEVORA stands for DEtermining VOlcanic Risk in Auckland, and what we are trying to do is provide a really comprehensive understanding of the Auckland volcanic field1 and the risk to the city of Auckland that is posed by the Auckland volcanic field.

    There’s a geology2 theme, a hazards theme and a risk theme. So in terms of the geology theme, we will try and get a really good understanding of where the magma3 is, where it’s coming from, how fast it’s travelling to the surface, what the crust4 is made of – that kind of thing. And in terms of the hazard theme, we want to know how often this has happened in the past and how often it could happen in the future. And then in the risk theme, what does this mean for Auckland?

    We have an example in the Auckland region of a very low probability event, but extremely high consequences. So we are not only looking at the hazard – which is how often will this volcano erupt in the future and what will happen if it did? – but we are taking it that one step further and saying, OK, if it happened here, what would be the impact? How many people would be affected? How many businesses? What lifelines do these people have? Continuity planning in their businesses, that sort of thing.

    Acknowledgement:
    Ministry of Civil Defence and Emergency Management, Auckland Regional Council

    1. Auckland volcanic field: An area of basaltic volcanism in Auckland city that is not associated with a tectonic plate boundary. It includes about 50 volcanoes over an area of 360 square kilometres.
    2. geology: Study of the origin, history and structure of the Earth; the geological features of an area.
    3. magma: Molten rock that is found under the Earth and has not reached the surface. Formed from the Earth’s mantle and forms the lava that erupts from volcanoes.
    4. crust: The outermost layer of the Earth. Estimated to be between 5–50 km thick. Made of solid rock of all types (metamorphic, igneous and sedimentary).
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      Auckland volcanic field

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    2. An area of basaltic volcanism in Auckland city that is not associated with a tectonic plate boundary. It includes about 50 volcanoes over an area of 360 square kilometres.

      crust

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    4. The outermost layer of the Earth. Estimated to be between 5–50 km thick. Made of solid rock of all types (metamorphic, igneous and sedimentary).

      geology

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    6. Study of the origin, history and structure of the Earth; the geological features of an area.

      magma

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    8. Molten rock that is found under the Earth and has not reached the surface. Formed from the Earth’s mantle and forms the lava that erupts from volcanoes.