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Journal Article

Structured elicitation of expert judgement in real-time eruption scenarios: an exercise for Piton de la Fournaise volcano, La Réunion island

Authors

Tadini,  Alessandro
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Harris,  Andrew
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Morin,  Julie
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Bevilacqua,  Andrew
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Peltier,  Aline
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Aspinall,  Willy
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Ciolli,  Stefano
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Bachèlery,  Patrick
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Bernard,  Benjamin
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Biren,  Jonas
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da Silveira,  Antonio Brum
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Cayol,  Valéry
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Chevrel,  Oryaëlle
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Coppola,  Diego
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Dietterich,  Hannah
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Donovan,  Amy
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Dorado,  Olaya
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Drenne,  Stéphane
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Dupéré,  Olivier
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Gurioli,  Lucia
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Kolzenburg,  Stephan
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Komorowski,  Jean-Christophe
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Labazuy,  Philippe
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Mangione,  Domenico
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Mannini,  Stefano
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Martel-Asselin,  François
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Médard,  Etienne
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Pailot-Bonnétat,  Sophie
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Rafflin,  Victoria
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Ramsey,  Michael
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/persons/resource/nrichter

Richter,  N.
2.1 Physics of Earthquakes and Volcanoes, 2.0 Geophysics, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

Vallejo,  Silvia
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Villeneuve,  Nicolas
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Zafrilla,  Silvia
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Fulltext (public)

5015096.pdf
(Publisher version), 4MB

Supplementary Material (public)
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Citation

Tadini, A., Harris, A., Morin, J., Bevilacqua, A., Peltier, A., Aspinall, W., Ciolli, S., Bachèlery, P., Bernard, B., Biren, J., da Silveira, A. B., Cayol, V., Chevrel, O., Coppola, D., Dietterich, H., Donovan, A., Dorado, O., Drenne, S., Dupéré, O., Gurioli, L., Kolzenburg, S., Komorowski, J.-C., Labazuy, P., Mangione, D., Mannini, S., Martel-Asselin, F., Médard, E., Pailot-Bonnétat, S., Rafflin, V., Ramsey, M., Richter, N., Vallejo, S., Villeneuve, N., Zafrilla, S. (2022): Structured elicitation of expert judgement in real-time eruption scenarios: an exercise for Piton de la Fournaise volcano, La Réunion island. - Volcanica, 5, 105-131.
https://doi.org/10.30909/vol.05.01.105131


Cite as: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5015096
Abstract
Formalised elicitation of expert judgements has been used to help tackle several problematic societal issues, including volcanic crises and pandemic threats. We present an expert elicitation exercise for Piton de la Fournaise volcano, La Réunion island, held remotely in April 2021. This involved 28 experts from nine countries who considered a hypothetical effusive eruption crisis involving a new vent opening in a high-risk area. The tele-elicitation presented several challenges, but is a promising and workable option for application to future volcanic crises. Our exercise considered an “uncommon” eruptive scenario with a vent outside the present caldera and within inhabited areas, and provided uncertainty ranges for several hazard-related questions for such a scenario (e.g. probability of eruption within a defined timeframe; elapsed time until lava flow reaches a critical location, and other hazard management issues). Our exercise indicated that such a scenario would probably present very different characteristics compared to recent eruptions, and that it is fundamental to include well-prepared expert elicitations in updated civil protection evacuation plans to improve disaster response procedures.