暴露和腹股沟保护的陡峭海滩的海岸侵蚀模拟

IF 1.4 3区 工程技术 Q3 ENGINEERING, CIVIL
J. L. Garzon, O. Ferreira, T. Plomaritis
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引用次数: 1

摘要

10基于过程的模型是重现风暴驱动侵蚀的合适工具。然而,它们的性能主要是在温和斜坡的沙滩上进行测试,在陡峭的海滩上使用它们仍然是一个挑战。在这里,XBeach实验与两次风暴(16年和5年的重现期)的地形测量相结合,获得了一个可靠的模型。利用模型13个参数“facua”(参数化波浪不对称和偏度输沙分量)、“bermslope”(半反射海滩上坡输沙项14)和“wetslope”(临界雪崩淹没坡)进行校准和验证。在一个裸露的海滩上进行的16年的风暴模拟表明,无论“bermslope”是否增加,“facua”是否必须减少,反之亦然,才能正确地模拟侵蚀。当使用“facua”和“wetslope”值接近17个推荐值时,添加“bermslope”为这些风暴提供了极好的结果。在一个受腹股沟保护的地点,XBeach成功地使用这18个参数对测试的风暴进行了校准和验证,尽管它们的值不同。这些实验表明,适当使用这些参数可以令人满意地模拟不同水动力条件和海岸设置(暴露和腹股沟保护)下陡峭海滩的形态变化
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Modeling of Coastal Erosion in Exposed and Groin-Protected Steep Beaches
10 Process-based models are suitable tools for reproducing storm-driven erosion. However, their performance has been mainly 11 examined on mild-slope sandy beaches and their use on steep beaches represents still a challenge. Here, XBeach experiments were 12 combined with topographical measurements collected for two storms (16-yr and 5-yr return period) to obtain a reliable model. The model 13 parameters “facua” (parameterized wave asymmetry and skewness sediment transport component), “bermslope” (upslope transport term 14 for semi-reflective beaches), and “wetslope” (critical avalanching submerged slope) were utilized for calibration and validation. The 16-yr 15 storm simulations on an exposed beach revealed that whether “bermslope” increased, “facua” must be reduced, and vice versa, to properly 16 simulate erosion. Adding “bermslope” provided excellent results for these storms when using “facua” and “wetslope” values close to the 17 recommended values. In a groin-protected site, XBeach was successfully calibrated and validated for the tested storms using these 18 parameters, although with different values. These experiments demonstrated that the appropriate use of these parameters can satisfactorily 19 simulate morphological changes on steep beaches for different hydrodynamic conditions and coastal settings (exposed and groin-20 protected
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来源期刊
CiteScore
4.40
自引率
4.50%
发文量
49
审稿时长
9 months
期刊介绍: The Journal of Waterway, Port, Coastal, and Ocean Engineering disseminates to the profession engineering and scientific advances made in the COPRI disciplines. The journal is a strong forum for civil engineering disciplines related to ocean, coastal and riverine waters as well as the interaction of these waters and the adjacent built and natural environments. This broad scope makes the Journal an ideal choice for the publication and dissemination of archival contributions dealing with important related topics. Topics include dredging, floods, sediment transport, tides, wind waves and storm surge, tsunamis, climate change, rising sea level, extreme weather events and other hazards that affect shorelines, waterways, estuaries, and ports and harbors, as well as efforts to mitigate the impact of such hazards. Of equal interest is the development and operation of offshore facilities and ocean resource utilization, such as renewable energy and ocean mining. Types of publications include original journal articles, comprehensive review articles, short technical notes, case studies of special interest to the readership, book reviews, and special issues on selected topics.
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