Dynamic modeling of surface runoff and storm surge during hurricane and tropical storm events
Dynamic modeling of surface runoff and storm surge during hurricane and tropical storm events
复制标题
飓风和热带风暴事件期间地表径流和风暴潮的动态建模
DOI：
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发表时间：
2018
期刊：
影响因子：
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通讯作者：
Javier Maldonado
中科院分区：
文献类型：
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作者：
W. Silva;F. Santiago;J. Gonzalez;Javier Maldonado
飓风事件将海洋风暴潮渗透与内陆径流洪水结合在一起。本文提出了一种确定风暴潮和地表径流共同引起的沿海洪水水位的新方法。所提出的方法将模拟近岸波浪模型和高级环流（ADCIRC）模型与网格表面地下水文分析（GSSHA）二维水文模型结合起来。带有循环模型的二维水文模型中的雷达降水数据可以模拟时间和空间变化的条件。该方法用于研究飓风乔治（1998 年）在波多黎各东海岸通过期间发生的洪水情景。风暴潮和地表径流的结合在该地点产生了洪水深度方面的关键情况。本文描述了数据收集过程、循环和水文模型、它们的组合和模拟场景。结果表明，沿海地区内陆径流峰值流量与风暴潮峰值流量并不重合；然而，两种排放的相互作用会导致洪水水位超过仅通过风暴潮渗透所获得的水位，从而加剧了危险状况。当风暴潮条件与陡峭和小型沿海流域的高降水同时发生时，风暴潮和水文模型的联系是必要的。
Hurricane events combine ocean storm surge penetration with inland runoff flooding. This article presents a new methodology to determine coastal flood levels caused by the combination of storm surge and surface runoff. The proposed approach couples the Simulating Waves Nearshore model and the Advanced Circulation (ADCIRC) model with the Gridded Surface Subsurface Hydrologic Analysis (GSSHA) two-dimensional hydrologic model. Radar precipitation data in a 2D hydrologic model with a circulation model allows simulation of time and spatially varied conditions. The method was applied to study flooding scenarios occurring during the passage of Hurricane Georges (1998) on the east coast of Puerto Rico. The combination of storm surge and surface runoff produced a critical scenario, in terms of flood depth, at this location. The paper describes the data collection process, circulation and hydrologic models, their assemblage and simulation scenarios. Results show that peak flow from inland runoff and peak flow due to storm surge did not coincide in the coastal zone; however, the interaction of both discharges causes an aggravated hazardous condition by increasing flood levels beyond those obtained with storm surge penetration only. Linking of storm surge and hydrologic models are necessary when storm surge conditions occur simultaneously with high precipitation over steep and small coastal watersheds.