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Conference Paper

Communicating volcanic hazard modelling outputs in hazard maps: The importance of a transdisciplinary approach

Authors

Lindsay,  Jan
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Calder,  Eliza
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Ogburn,  Sarah
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Wright,  Heather
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Charlton,  Danielle
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Clive,  Mary Anne
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Bertin,  Daniel
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Steinke,  Bastian
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

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Citation

Lindsay, J., Calder, E., Ogburn, S., Wright, H., Charlton, D., Clive, M. A., Bertin, D., Steinke, B. (2023): Communicating volcanic hazard modelling outputs in hazard maps: The importance of a transdisciplinary approach, XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) (Berlin 2023).
https://doi.org/10.57757/IUGG23-0169


Cite as: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5016360
Abstract
Volcanic hazard maps are visual, geospatial depictions of areas that could be impacted by various volcanic phenomena during or after eruptions, and increasingly incorporate outputs of hazard models. Interrogation of the recently developed Volcanic Hazard Maps database of 1823 maps (https://volcanichazardmaps.org) shows that whilst the most common hazard zonation methodology (43% of maps) is based solely on geologic history, simple empirical or geophysical models are used to simulate eruption scenarios in 30% of maps, and hazard zones based on probabilistic modelling are used in 14% of maps. Volcanic hazard maps are used to support crisis communication and decision-making with a wide range of audiences, and their design often draws from a range of disciplines beyond volcanology such as cartography, communication, and psychology. Because it is important that maps are designed to meet the requirements of the user, their development ideally takes a collaborative transdisciplinary approach that incorporates co-design and co-development with map users. In the context of volcanic hazard modelling this may reveal preferences in design such as which model results to depict on the map (e.g., worst-case vs. most-likely vs. all scenarios) or how to best depict uncertainty (e.g., fuzzy boundaries vs. use of colour). In this presentation we share the outcomes of a multi-year effort by the IAVCEI Working Group on Hazard Mapping to identify and categorise a suite of good practices and considerations for volcanic hazard mapping, with a particular focus on the use of models in hazard communication using maps.