利用水动力模型评估海岸防护结构在减轻洪水方面的有效性:热带环境的案例研究

IF 8.4 2区 环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES
Samera Samsuddin Sah , Khairul Nizam Abdul Maulud , Zulkarnain Hassan , Nurul Nadrah Aqilah Tukimat , Zaher Mundher Yaseen
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引用次数: 0

摘要

沿海地区情况复杂,容易受到洪水的影响,特别是在低洼地区。本研究旨在通过应用水动力模型MIKE 21来评估海岸防护结构作为缓解因素的有效性。该模型利用数值方法分析水深、潮汐效应、河流流量、数字高程模型(DEM)和海平面上升(SLR)等情景。概述了三种情景:第一,K1,代表没有海岸防护结构的模拟;第二个是K2,包括现有的海岸防护结构;第三,K3是针对研究地点设计的改良的海岸防护结构。K3情景被划分为两个区域:北部区域(NA)和南部区域(SA),这两个区域分别采用了硬工程和软工程海岸防护方法。结果表明,与K1相比,K2和K3显著减少了洪水面积,将NA的潜在淹没面积从228 ha减少到304 ha, SA的潜在淹没面积从31 ha减少到10 ha。统计学分析(Friedman检验)显示K1和K2之间存在显著差异(χ 2 = 4.0, p <;0.05),验证了模型将海岸结构纳入洪水风险评估。总之,纳入海岸结构物的水动力建模可以有效地评估受影响地区的海岸洪水风险,同时提高输出的准确性和可靠性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Evaluating the effectiveness of coastal protection structures in flood mitigation using hydrodynamic modeling: A case study in a tropical environment
The coastal zone is complex and vulnerable to flooding, especially in low-lying areas. This research aimed to assess the effectiveness of coastal protection structures as mitigating factors through the application of the hydrodynamic model, MIKE 21. The model utilizes numerical methods to analyze scenarios involving bathymetry, tidal effects, river discharge, digital elevation model (DEM), and sea level rise (SLR). Three scenarios were outlined: the first, K1, represents a simulation without a coastal protection structure; the second, K2, includes the existing coastal protection structure; and the third, K3, presents a modified coastal protection structure designed for the study location. The K3 scenario was segmented into two regions: the northern region (NA) and the southern region (SA), both of which utilize hard and soft engineering coastal protection approaches, respectively. The results demonstrated that K2 and K3 significantly reduced flood areas, decreasing the potential inundation zones in the NA from 228 ha to 304 ha and in the SA from 31 ha to 10 ha, respectively, compared to K1. Statistical analysis (Friedman Test) showed a significant difference between K1 and K2 (chi-square = 4.0, p < 0.05), which validated the models' inclusion of coastal structures for flood risk assessment. In brief, hydrodynamic modeling that incorporates coastal structures can effectively evaluate the risk of coastal flooding in impacted areas while also enhancing the accuracy and reliability of the output.
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来源期刊
Journal of Environmental Management
Journal of Environmental Management 环境科学-环境科学
CiteScore
13.70
自引率
5.70%
发文量
2477
审稿时长
84 days
期刊介绍: The Journal of Environmental Management is a journal for the publication of peer reviewed, original research for all aspects of management and the managed use of the environment, both natural and man-made.Critical review articles are also welcome; submission of these is strongly encouraged.
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