风暴波对海岸沉积物输送的峰值影响

IF 2.6 3区地球科学 Q1 MARINE & FRESHWATER BIOLOGY

Estuarine Coastal and Shelf Science Pub Date : 2025-05-08 DOI:10.1016/j.ecss.2025.109347

Changbin Lim

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引用次数: 0

摘要

海滩沉积物被破碎的波浪悬浮，并在斜波作用下沿海岸消散。它们具有水平运移的特点，在海岸泥沙运移和岸线变化中起着重要作用。本文提出了一种考虑悬沙水平特性和风暴潮情景的新模型，取代了传统的基于波浪能通量的方法。此外，本文还从导出的峰值LSTR方程推导出了一般的LSTR。然后，通过将LSTR的一般方程与五个传统方程进行比较，特别是著名的CERC（1984）和Kamphuis(1991)，使用从美国12个海滩收集的波浪、沉积物和LSTR的观测值，验证了LSTR的一般方程。结果表明，该模型具有较好的一致性，增强了新模型对LSTR的适用性。此外，该模型可用于预测偶发性风暴期间的LSTR峰值。

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Peak longshore sediment transport for storm waves

Beach sediments are suspended by breaking waves and dissipate across/along the shore under oblique wave action. With horizontal behavior in their transport, they play an important role in longshore sediment transport and shoreline change. Instead of applying the conventional approach derived from wave energy flux, a new model for the peak longshore sediment transport rate (LSTR) is described, considering the horizontal behavior of suspended sediment, along with storm wave scenarios. Additionally, this paper presents a general LSTR derived from the derived peak LSTR equation. The general equation for the LSTR is then validated by comparing it with five conventional equations, notably the famous CERC (1984)and Kamphuis (1991), using observed values of waves, sediment, and the LSTR collected from 12 beach sites in the United States. Good agreement is found in the comparison, which enhances the applicability of the new model for LSTR. Furthermore, the proposed model is applicable for predicting peak LSTR during episodic storms.

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来源期刊

Estuarine Coastal and Shelf Science 地学-海洋学

CiteScore

5.60

自引率

7.10%

发文量

374

审稿时长

9 months

期刊介绍： Estuarine, Coastal and Shelf Science is an international multidisciplinary journal devoted to the analysis of saline water phenomena ranging from the outer edge of the continental shelf to the upper limits of the tidal zone. The journal provides a unique forum, unifying the multidisciplinary approaches to the study of the oceanography of estuaries, coastal zones, and continental shelf seas. It features original research papers, review papers and short communications treating such disciplines as zoology, botany, geology, sedimentology, physical oceanography.