Estuarine flooding in urban areas: enhancing vulnerability assessment

被引:0
|
作者
Pedro Pinto Santos
Alexandre Oliveira Tavares
Paula Freire
Ana Rilo
机构
[1] Centre for Social Studies of the University of Coimbra,Earth Sciences Department
[2] Centre for Social Studies of the University of Coimbra,Institute of Geography and Spatial Planning
[3] National Civil Engineering Laboratory,undefined
[4] Universidade de Lisboa,undefined
来源
Natural Hazards | 2018年 / 93卷
关键词
Flood hazard; Vulnerability; Multiscale; Risk management;
D O I
暂无
中图分类号
学科分类号
摘要
The assessment of vulnerability provides valuable knowledge in the risk assessment steps of a risk governance process. Given the multiscale, multilevel, and multisectorial aspects of flood risk, the diversified entities that directly and indirectly intervene in risk management require specific outputs from the assessment studies. Urban areas in estuarine margins are particularly exposed and vulnerable to flooding. Such interface conditions are found in the Old City Centre of the Seixal, located in the Tagus estuary, Portugal. Here, two distinct methodologies were applied for the assessment of territorial vulnerability. A regional, lower-scale, methodology explores the application of the statistical procedure based on the SoVI® at the statistical block level. A second, local and higher-scale, methodology is based in data collected through field matrices at the building and statistical sub-block level. Comparison of results revealed that the lower-scale assessment provides information on the vulnerability drivers at the regional and municipal level. Nevertheless, only at a higher-scale, it is possible to characterize and differentiate the smaller geographical units of analysis that compose the Old City Centre of Seixal. The lower-scale vulnerability assessment allows a strategic response, based on adaptation measures such as spatial planning, institutional capacity building and public awareness. The local level assessment provides more accurate knowledge to support local emergency planning and the allocation of operational and material resources at the urban level. Nevertheless, rather than antagonistic, both models can be considered as complementary, having in mind the requirements of an holistic flood risk governance model.
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页码:77 / 95
页数:18
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