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Virtual tools for volcanic crisis management, and evacuation decision support: applications to El Chichón volcano (Chiapas, México)

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Abstract

Decision making regarding massive evacuation of a population threatened by a probable volcanic eruption is a major problem in crisis management. Such a decision is general on the number of people to be evacuated, available resources and infrastructure, quantity and quality of the escape routes and shelters, and the economic, social and political costs involved in the operation, coupled with the updated information provided by scientists about the forecast of future activity and probable eruption scenarios. Knowing time-lapse between the evacuation decision-making time and the time in which the evacuation is completed is another critical issue that must be carefully considered in densely populated areas. In such areas, it is really important to estimate in advance this time-lapse, as the forecast must be released with enough time to complete all the evacuation process before the destructive manifestations of the eruption begin. In this context, evacuation planning is a crucial component of emergency management. It is common for Emergency Plans to include pre-established strategies. However, an evacuation procedure should be flexible, depending on the above-mentioned timing, and on the decisions, evacuation schemes, environmental characteristics and other factors. In this work, several hazard models such as a lava flow model based on a Monte Carlo algorithm, a pyroclastic density current based on energy cone model, a semi-empirical inversion model to estimate the thickness of ash deposits, and all available information about the El Chión volcano have been used to obtain the area that should be evacuated in case of an eruption. Then, multiple evacuation strategies at El Chichón volcano have been designed, considering not only the characteristics of the eruption forecast, but also environmental factors (e.g., weather conditions) and social factors (e.g., tourism and farming seasons). The variable scale evacuation model has been used to estimate the evacuation time. In the paper, those virtual tools are briefly described as well as the information obtained from the drill of 2009. In addition to the optimization of evacuation under variable conditions and situations, one of the main objectives of this work is to provide a reliable estimation of the mitigation action time, for an Emergency Plan.

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Acknowledgements

This research has been funded by Grants from the CSIC (2011-30E070), MINECO (CGL2011-28682-C02-01) bilateral UNAM (México) - CSIC (Spain) program. We warmly thank all the participants in the exercise to assess the El Chichón Emergency Plan carried out by the Civil Protection of the Chiapas State, México, and the UNICACH, University of Chiapas, México.

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Authors and Affiliations

  1. Santa Cruz de Tenerife, Spain

    José Manuel Marrero

  2. Instituto de Geociencias IGEO, CSIC-UCM, J. Gutierrez Abascal 2, 28006, Madrid, Spain

    Alicia García & Ramón Ortiz

  3. Department of Soils Science and Geology, University of La Laguna, Tenerife, Canary Islands, Spain

    Angeles Llinares

  4. Instituto de Geofísica, Universidad Nacional Autónoma de México, 04510, México, DF, México

    Servando De la Cruz-Reyna

  5. Earth Science Laboratory, University of Arts and Sciences of Chiapas, Tuxtla Gutierrez, Mexico

    Silvia Ramos

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  1. José Manuel Marrero
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Marrero, J.M., García, A., Llinares, A. et al. Virtual tools for volcanic crisis management, and evacuation decision support: applications to El Chichón volcano (Chiapas, México). Nat Hazards 68, 955–980 (2013). https://doi.org/10.1007/s11069-013-0672-4

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