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Rip current hazards in South China headland beaches

机译：华南陆岬海滩的潮汐危害

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摘要

Beaches and coastal regions are commonly primary tourist destinations. Dollars spent by beach visitors annually provide significant input to local and regional economies. Hazards associated with rip currents can influence the suitably of any given stretch of coast as a recreational resource, and thus impact tourist dollars spent in addition to the safety and well-being of beach visitors. Therefore it is crucial to evaluate the degree of rip current risk along recreational beaches in order to protect human lives, maintain tourist attraction, and aid beach managers. Accordingly, a new rip current hazard assessment method is proposed based on the beach state model. Using the measured morphodynamic parameters (wave parameters, tidal ranges and sediment grain size) of 51 South China beaches, a preliminary assessment of rip current hazards was carried out. Results show that 71% of South China beaches may develop rip currents. The beaches in southern Fujian, Shanwei (in eastern Guangdong) and western Guangdong, and eastern and southern Hainan coasts have the highest risk of rip current development. The evaluation results are consistent with remote sensing observations, and beach incident (drowning and near drowning) media reports. This paper indicates that the beach morphodynamic model of Q-RTR (dimensionless fall velocity-relative tidal range) is a reasonable method to assess the rip current risk along sandy beaches. This information can aid coastal managers as well as reduce the frequency of rip current related incidents. (C) 2015 Elsevier Ltd. All rights reserved.
机译：海滩和沿海地区通常是主要的旅游目的地。每年海滩游客花费的美元为当地和地区经济提供了大量投入。与溪流有关的危险会适当地影响任何给定海岸带的休闲资源，从而影响海滩游客的安全和福祉，并因此而花费的旅游者费用。因此，至关重要的是评估休闲海滩沿岸的流域当前风险程度，以保护人类生命，保持旅游吸引力并帮助海滩管理员。因此，基于海滩状态模型，提出了一种新的河岸潮流危害评估方法。利用所测得的华南51个海滩的地貌动力学参数（波浪参数，潮差和沉积物粒度），对河道电流危害进行了初步评估。结果表明，华南地区71％的海滩可能会产生水流。福建南部，汕尾（广东东部）和广东西部以及海南东部和南部沿海的海滩是目前沿岸发展的最高风险。评估结果与遥感观测以及海滩事件（溺水和溺水）媒体报道一致。本文指出，Q-RTR的海滩形态动力学模型（无量纲降落速度相对潮汐范围）是评估沿沙滩撕裂流风险的合理方法。这些信息可以帮助沿海地区的管理人员，并减少与裂隙电流有关的事故发生的频率。 （C）2015 Elsevier Ltd.保留所有权利。

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