天文潮汐相位对暴雨期间城市内涝的影响：在澳门的应用

IF 4.7 2区地球科学 Q1 WATER RESOURCES

Journal of Hydrology-Regional Studies Pub Date : 2024-10-19 DOI:10.1016/j.ejrh.2024.101998

Lirong Dong , Jiahong Liu , Jinjun Zhou , Chao Mei , Hao Wang , Jia Wang , Hongyuan Shi , Sana Nazli

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引用次数: 0

摘要

研究区域研究区域为中国澳门半岛西部，面积为 4.06 平方公里。研究重点本研究开发了一种水文-水力耦合模型，用于模拟复合淹没的二维（2D）地表流和一维（1D）排水管流。该模型以中国澳门为研究区域，并以 2018 年台风 "山竹 "为案例验证了模型的性能。模拟极端降雨和天文大潮的复合淹没情景，探讨天文大潮对沿海城市淹没的影响。为该地区提供新的水文见解城市洪涝灾害受潮位影响深远，尽管潮位高低并不是加剧洪涝灾害的唯一因素。相反，降雨期间的天文潮汐相位在决定城市洪水的严重程度方面也起着至关重要的作用。这项研究表明，当降雨与春潮的退潮阶段同步时，城市内涝情况会变得严重，潮位影响最大的情况与潮位影响最小的情况相比，地表水总量增加了 17.66%。本文介绍了不同暴雨-天文大潮组合情景下沿海城市对洪水过程的响应，为沿海地区防灾规划提供科学指导，提高抗灾能力。

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The influence of astronomical tide phases on urban flooding during rainstorms: Application to Macau

Study region

The study area is the western part of the Macau Peninsula in China, with an area of 4.06 km².

Study focus

This study developed a coupled hydrological-hydraulic model that simulates the two-dimensional (2D) surface flow and one-dimensional (1D) drain pipe flow of compound inundation. The model was applied to Macau, China, as a study area, and the typhoon Mangkhut in 2018 was used as a case study to validate the model’s performance. Simulating compound inundation scenarios of extreme rainfall and astronomical tide and exploring the influence of astronomical tide on coastal urban inundation.

New hydrological insights for the region

Urban flood disasters are profoundly influenced by tidal levels, albeit the height of tides alone does not solely exacerbate the phenomenon. Rather, the phase of astronomical tides during rainfall also plays a crucial role in determining the severity of urban flooding. This research has revealed that when rainfall synchronizes with the recession phase of the spring tide, urban flooding conditions become acute, 17.66 % increase in total surface water volume for the scenario with the highest tidal level impact compared to the scenario with the lowest tidal level impact. This paper presents the response of coastal cities to the flooding process under different combined rainstorm-astronomical tide scenarios, to provide scientific guidance for disaster preparedness planning in coastal areas, and to improve the resilience of disasters.

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来源期刊

Journal of Hydrology-Regional Studies Earth and Planetary Sciences-Earth and Planetary Sciences (miscellaneous)

CiteScore

6.70

自引率

8.50%

发文量

284

审稿时长

60 days

期刊介绍： Journal of Hydrology: Regional Studies publishes original research papers enhancing the science of hydrology and aiming at region-specific problems, past and future conditions, analysis, review and solutions. The journal particularly welcomes research papers that deliver new insights into region-specific hydrological processes and responses to changing conditions, as well as contributions that incorporate interdisciplinarity and translational science.