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Nat. Hazards Earth Syst. Sci., 15, 703-714, 2015
https://doi.org/10.5194/nhess-15-703-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
Research article
01 Apr 2015
Flood warnings in coastal areas: how do experience and information influence responses to alert services?
G. Pescaroli1 and M. Magni2 1Institute for Risk and Disaster Reduction, University College London, London, UK
2Università Politecnica delle Marche, Ancona, Italy
Abstract. Many studies discuss the economic and technical aspects of flood warnings. Less attention has been given to the social and behavioural patterns that affect alert services. In particular, the literature focuses on warnings activated in river basins or marine environments without providing clear evidence on Mediterranean coastal areas, even though these are subjected to growing flood risk related to climate change. This paper is a first attempt to bridge this gap. Our research develops an in-depth analysis of the village of Cesenatico on the Adriatic Sea coast. Here the municipality adopted two complementary warning systems: a siren and an alert via short message service (SMS). The analysis focuses on a survey conducted in 2011 and 2012 with 228 participants. The relationships between social and behavioural variables and warning services are investigated as well as flood preparedness and information dissemination. Qualitative evidence from informal interviews is used to support the understanding of key responses. The conclusions show how different social and behavioural patterns can influence the effectiveness and use of warning systems, regardless of the technology adopted and the structural mitigation measures implemented. Education, training and accountability are seen to be critical elements for implementation. Finally, the statistical output is used to suggest new questions and new directions for research.

Citation: Pescaroli, G. and Magni, M.: Flood warnings in coastal areas: how do experience and information influence responses to alert services?, Nat. Hazards Earth Syst. Sci., 15, 703-714, https://doi.org/10.5194/nhess-15-703-2015, 2015.
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Short summary
This paper integrates quantitative and qualitative methodologies to analyze how the social and psychological patterns can influence flood warnings in coastal areas. We presented a case study located on the Adriatic Sea coast, where two complementary instruments, a siren and an alert via SMS, were implemented. Our results show how the contextualization of warnings can widely modify the effects of technical tools, providing complementary results to literature and suggesting new relations.
This paper integrates quantitative and qualitative methodologies to analyze how the social and...
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