建立高效的沿岸洪水模型:浴缸法、扩展流体力学法和总水位法的比较评估

IF 2.2 3区 地球科学 Q2 OCEANOGRAPHY
Yi Hong, James Kessler, Daniel Titze, Qing Yang, Xinyi Shen, Eric J. Anderson
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引用次数: 0

摘要

五大湖社区的沿海洪水对生态系统和经济可持续性构成了严重威胁。准确、高效的洪水预测可以提供重要的预先警报,提高当地的抗灾能力。针对五大湖的洪水事件评估了三种建模方法,包括浴缸法 (BTM)、扩展水动力模型 (EXT) 和总水位法 (TWL)。这些模拟方法成功地复制了湖区四个近岸测站的水位,为沿岸洪水模拟提供了可靠的起点。在三个典型的洪水高风险区域,包括开阔的海湾地区、淹没河口(河口)湖泊沿岸和有重 型基础设施的一段海岸线,采用不同方法模拟的最大洪水范围进行了比较。此外,本研究还分析了新闻报道中的航拍照片和合成孔径雷达(SAR)数据,以提供所研究洪水事件的观测信息。结果表明,BTM 和 EXT 在模拟各种类型沿海地区的洪水范围方面具有一致性,而 TWL 在预测洪水向内陆地区,尤其是河口湖泊沿岸传播方面存在局限性。尽管 BTM 略微高估了互不相连的低洼地区的洪水范围,但它仍然可以作为一种具有成本效益的工具,为五大湖区提供初步的洪水模拟。我们进一步讨论了利用 BTM、EXT 和 TWL 进行沿岸洪水模拟的操作前景。这些研究结果可用于指导沿岸管理,为沿岸洪水预报确定有效和准确的方法。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Towards efficient coastal flood modeling: A comparative assessment of bathtub, extended hydrodynamic, and total water level approaches

Towards efficient coastal flood modeling: A comparative assessment of bathtub, extended hydrodynamic, and total water level approaches

Coastal flooding within Great Lakes communities poses severe threats to ecosystem and economic sustainability. Accurate and efficient flood predictions could provide critical advanced warnings and improve local resilience. Three types of modeling approaches, including the Bathtub Method (BTM), Extended Hydrodynamic model (EXT), and Total Water Level (TWL) approach, were evaluated for a flood event in the Great Lakes. These studied modeling approaches have successfully replicated water levels at four nearshore gauge stations in the lake, indicating a reliable starting point for coastal flood simulations. Comparisons were made between simulations of maximum flood extent using different methods in three typical high flooding risk areas, including an open-bay area, along coasts of drowned-river-mouth (estuaries) lakes, and a section of shoreline with heavy infrastructural facilities. In addition, aerial photos from news reports and synthetic aperture radar (SAR) data were analyzed in this study to provide observed information for the studied flooding events. According to the results, BTM and EXT were consistent in simulating flood extents for various types of coastal areas, while the TWL was limited in predicting flood propagation into inland areas, particularly in the coasts of river-mouth lakes. Despite slightly overestimating the flood extent in disconnected low-lying areas, the BTM can still serve as a cost-effective tool to provide preliminary flood simulations for the Great Lakes region. We further discuss operational perspectives of using BTM, EXT, and TWL for coastal flood modeling. The results of this study could be used to improve the guidance of coastal management by determining efficient and accurate approaches for coastal flood predictions.

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来源期刊
Ocean Dynamics
Ocean Dynamics 地学-海洋学
CiteScore
5.40
自引率
0.00%
发文量
37
审稿时长
6-12 weeks
期刊介绍: Ocean Dynamics is an international journal that aims to publish high-quality peer-reviewed articles in the following areas of research: Theoretical oceanography (new theoretical concepts that further system understanding with a strong view to applicability for operational or monitoring purposes); Computational oceanography (all aspects of ocean modeling and data analysis); Observational oceanography (new techniques or systematic approaches in measuring oceanic variables, including all aspects of monitoring the state of the ocean); Articles with an interdisciplinary character that encompass research in the fields of biological, chemical and physical oceanography are especially encouraged.
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