Flood risk perceptions and spatial multi-criteria analysis

An exploratory research for hazard mitigation

Dados Bibliográficos

ID23320295
AutoresRuud Raaijmakers, Jörg Krywkow (University of Twente, autor correspondente), Anne Van Der Veen (0000-0003-1574-9332, University of Twente)
Ano2008
Volume46
Fascículo3
Páginas307-322
Data de publicação2008-09-01
Peer ReviewedSim
Open AccessSim
TipoARTICLE
PeriódicoNatural Hazards (JOURNAL)
Identificadores do periódicoISSN: 0921-030X • E-ISSN: 1573-0840
EditoraSpringer Science and Business Media LLC (PUBLISHER)
DOI10.1007/s11069-007-9189-z
OpenAlexW2087444761
IdiomaEN
Citações recebidas69
Referências citadas31

The conventional method of risk analysis (with risk as a product of probability and consequences) does not allow for a pluralistic approach that includes the various risk perceptions of stakeholders or lay people within a given social system. This article introduces a methodology that combines the virtues of three different methods: the quantifiable conventional approach to risk; the taxonomic analysis of perceived risk; and the analytical framework of a spatial multi-criteria analysis. This combination of methods is applied to the case study ‘Ebro Delta’ in Spain as part of the European sixth framework project ‘Floodsite’. First, a typology for flood hazards is developed based on individual and/or stakeholders’ judgements. Awareness, worry and preparedness are the three characteristics that typify a community to reflect various levels of ignorance, perceived security, perceived control or desired risk reduction. Applying ‘worry’ as the central characteristic, a trade-off is hypothesized between Worry and the benefits groups in society receive from a risky situation. Second, this trade-off is applied in Spatial Multi-Criteria Analysis (SMCA). MCA is the vehicle that often accompanies participatory processes, where governmental bodies have to decide on issues in which local stakeholders have a say. By using risk perception-scores as weights in a standard MCA procedure a new decision framework for risk assessment is developed. Finally, the case of sea-level rise in the Ebro Delta in Spain serves as an illustration of the applied methodology. Risk perception information has been collected with help of an on-site survey. Risk perception enters the multi-criteria analysis as complementary weights for the criteria risk and benefit. The results of the survey are applied to a set of scenarios representing both sea-level rise and land subsidence for a time span of 50 years. Land use alternatives have been presented to stakeholders in order to provide the regional decision maker with societal preferences for handling risk. Even with limited resources a characteristic ‘risk profile’ could be drawn that enables the decision maker to develop a suitable land use policy.

Actuarial science · Anxiety · Business · Computer security · Economics · Environmental planning · Environmental resource management · Flood myth · Geography · Hazard · Ignorance · Natural hazard · Perception · Political science · Preparedness · Risk analysis (engineering) · Risk assessment · Risk management · Risk perception · Worry · Computer Science · Environmental and Social Impact Assessments · Flood Risk Assessment and Management · Psychology · Risk Perception and Management