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首页> 外文期刊>Natural hazards and earth system sciences >A holistic model for coastal flooding using system diagrams and the Source-Pathway-Receptor (SPR) concept
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A holistic model for coastal flooding using system diagrams and the Source-Pathway-Receptor (SPR) concept

机译：使用系统图和Source-Pathway-Receptor（SPR）概念的沿海洪水的整体模型

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Coastal flooding is a problem of increasing relevance in low-lying coastal regions worldwide. In addition to the anticipated increase in likelihood and magnitude of coastal floods due to climate change, there is rapid growth in coastal assets and infrastructure. Sustainable and integrated coastal flood management over large areas and varying coastline types cannot be simply treated as local combinations of flood defences and floodplains. Rather, a system level analysis of floodplains is required to structure the problem as a first step before applying quantitative models. In this paper such a model is developed using system diagrams and the Source-Pathway-Receptor (SPR) concept, to structure our understanding of large and complex coastal flood systems. A graphical systems model is proposed for the assessment of coastal flood systems with regard to individual elements and their topological relationships. Two examples are discussed-a unidirectional model for a large-scale flood system, and a multi-directional model for a smaller-scale system, both based on the Western Scheldt estuary. The models help to develop a comprehensive understanding of system elements and their relationships and provide a holistic overview of the coastal flood system. The approach shows that a system level analysis of floodplains is more effective than simple topographic maps when conveying complex information. The models are shown to be useful as an apriori approach for making the assumptions about flood mechanisms explicit and for informing inputs to numerical models.
机译：沿海洪灾是全球低洼沿海地区越来越重要的问题。除了预期的由于气候变化导致沿海洪灾的可能性和规模增加外，沿海资产和基础设施也在迅速增长。不能将大面积和不同海岸线类型的可持续的综合沿海洪水管理简单地视为防洪和洪泛区的局部组合。相反，在应用定量模型之前，首先需要对洪泛区进行系统级分析，以构建问题的结构。在本文中，使用系统图和“源-途径-受体”（SPR）概念开发了这样的模型，以构建我们对大型复杂海防系统的理解。提出了一个图形系统模型来评估沿海洪水系统的各个要素及其拓扑关系。讨论了两个示例-大型洪水系统的单向模型和较小规模系统的多向模型，这两个都是基于Western Scheldt河口的。这些模型有助于发展对系统要素及其关系的全面理解，并提供沿海洪水系统的整体概览。该方法表明，在传递复杂信息时，洪泛区的系统级分析比简单地形图更有效。这些模型被证明是一种先验的方法，可以使洪水机制的假设变得明确，并为数值模型提供输入信息。

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