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首页> 外文期刊>Geosciences >Assessing Flood Hazard at River Basin Scale with an Index-Based Approach: The Case of Mouriki, Greece
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Assessing Flood Hazard at River Basin Scale with an Index-Based Approach: The Case of Mouriki, Greece

机译：基于指数的方法评估流域规模的洪灾危险：希腊穆里基的案例

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Defining flood-prone areas is particularly important for policy makers, in order to design mitigation strategies and implement flood risk management planning. The present research applies a multicriteria index method to assess flood hazard areas at a river basin scale, in a geographic information system (GIS) environment. The developed methodology has been applied for an area in northeastern Greece, by processing information of seven parameters: flow accumulation, distance from the drainage network, elevation, land use, rainfall intensity and geology. The method assigns a relative importance to each of the parameters for the occurrence and magnitude of flooding, and the relevant weight values are defined through an “analytical hierarchy process”. Subsequently, and according to the relative importance of each index, the spatial information is superimposed, resulting in a flood hazard map of the studied region, an area in northern Greece. The obtained results indicate flood-prone zones, with a very high flood hazard mainly occurring at the lowlands in the vicinity of the drainage network. The provided flood hazard map supports planning activities and mitigation plans that are crucial to protect both the agricultural activities and existing infrastructure from future flood events.
机译：为了设计缓解策略和实施洪水风险管理计划，定义容易发生洪水的地区对于政策制定者尤其重要。本研究应用多准则指标方法在地理信息系统（GIS）环境中评估流域尺度上的洪灾危险区。通过处理七个参数的信息，已开发的方法已应用于希腊东北部地区：流量积聚，距排水网络的距离，海拔，土地利用，降雨强度和地质条件。该方法为洪水泛滥的发生和幅度的各个参数分配了相对重要性，并且通过“层次分析法”定义了相关的权重值。随后，根据每个索引的相对重要性，将空间信息叠加在一起，从而得出研究区域（希腊北部一个地区）的洪水灾害地图。获得的结果表明洪水易发区，洪灾危险很高，主要发生在排水管网附近的低地。所提供的洪水灾害图支持计划活动和缓解计划，这对于保护农业活动和现有基础设施免受未来的洪水事件影响至关重要。

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