当前位置: X-MOL 学术Nat. Hazards Earth Syst. Sci. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Hydrogeomorphological analysis and modelling for a comprehensive understanding of flash-flood damage processes: the 9 October 2018 event in northeastern Mallorca
Natural Hazards and Earth System Sciences ( IF 4.6 ) Pub Date : 2020-08-13 , DOI: 10.5194/nhess-20-2195-2020
Joan Estrany , Maurici Ruiz-Pérez , Raphael Mutzner , Josep Fortesa , Beatriz Nácher-Rodríguez , Miquel Tomàs-Burguera , Julián García-Comendador , Xavier Peña , Adolfo Calvo-Cases , Francisco J. Vallés-Morán

Abstract. A flash-flood event hit in the 9th October 2018 the northeastern part of Mallorca Island, causing 13 casualties. This island is prone to catastrophic flash floods acting on a scenario that illustrates the deep landscape transformation of Mediterranean tourist resorts. As global change may exacerbate devastating flash floods, comprehensive analyses of catastrophic events are crucial to support effective prevention and mitigation measures. Field-based, remote-sense and modelling techniques were used in this study to evaluate rainfall-runoff processes at catchment scale linked to hydrological modelling. Continuous streamflow monitoring data revealed a peak discharge 442 m3 s−1 with an unprecedented runoff response (lag time, 15’). This very flashy behaviour triggered the natural disaster as a combination of heavy rainfall (246 mm in 10 h), karstic features and land cover disturbances in the Begura de Sauma River catchment (i.e., 23 km2). Topography-based connectivity index and geomorphic change detection were used as a rapid post-catastrophe decision-making tool, playing a key role during the rescue searching tasks. These hydrogeomorphological precision techniques were also applied in combination with Copernicus EMS and ground-based damage assessment illustrating with high accuracy the damage driving factors in the village of Sant Llorenc des Cardassar. The main challenges in the future are to readapt hydrological modelling to global change scenarios, implement an early flash flood warning system and apply adaptive and resilient measures at catchment scale.

中文翻译:

全面了解山洪灾害过程的水文地貌分析和建模:2018 年 10 月 9 日在马略卡岛东北部发生的事件

摘要。2018 年 10 月 9 日,马略卡岛东北部发生山洪暴发,造成 13 人伤亡。这个岛屿很容易发生灾难性的山洪,这种情况说明了地中海旅游胜地的深层景观转变。由于全球变化可能会加剧破坏性山洪暴发,对灾难性事件的综合分析对于支持有效的预防和缓解措施至关重要。本研究使用基于现场的遥感和建模技术来评估与水文建模相关的流域规模的降雨径流过程。连续流量监测数据显示峰值流量为 442 m3 s-1,具有前所未有的径流响应(滞后时间,15')。这种非常浮华的行为引发了自然灾害,因为强降雨(10 小时内 246 毫米),Begura de Sauma 河流域(即 23 平方公里)的岩溶特征和土地覆被干扰。基于地形的连通性指数和地貌变化检测被用作灾后快速决策工具,在救援搜索任务中发挥着关键作用。这些水文地貌精确技术还与哥白尼 EMS 和基于地面的损坏评估相结合,以高精度说明 Sant Llorenc des Cardassar 村的损坏驱动因素。未来的主要挑战是重新调整水文模型以适应全球变化情景,实施早期山洪预警系统并在流域范围内应用适应性和弹性措施。基于地形的连通性指数和地貌变化检测被用作灾后快速决策工具,在救援搜索任务中发挥着关键作用。这些水文地貌精确技术还与哥白尼 EMS 和基于地面的损坏评估相结合,以高精度说明 Sant Llorenc des Cardassar 村的损坏驱动因素。未来的主要挑战是重新调整水文模型以适应全球变化情景,实施早期山洪预警系统并在流域范围内应用适应性和弹性措施。基于地形的连通性指数和地貌变化检测被用作灾后快速决策工具,在救援搜索任务中发挥着关键作用。这些水文地貌精确技术还与哥白尼 EMS 和基于地面的损坏评估相结合,以高精度说明 Sant Llorenc des Cardassar 村的损坏驱动因素。未来的主要挑战是重新调整水文模型以适应全球变化情景,实施早期山洪预警系统并在流域范围内应用适应性和弹性措施。这些水文地貌精确技术还与哥白尼 EMS 和基于地面的损坏评估相结合,以高精度说明 Sant Llorenc des Cardassar 村的损坏驱动因素。未来的主要挑战是重新调整水文模型以适应全球变化情景,实施早期山洪预警系统并在流域范围内应用适应性和弹性措施。这些水文地貌精确技术还与哥白尼 EMS 和基于地面的损坏评估相结合,以高精度说明 Sant Llorenc des Cardassar 村的损坏驱动因素。未来的主要挑战是重新调整水文模型以适应全球变化情景,实施早期山洪预警系统并在流域范围内应用适应性和弹性措施。
更新日期:2020-08-13
down
wechat
bug