The increasing littoralization process of coastal areas in recent decades to adapt them to user needs has generated important changes in ecosystems. This is the case of the coast of Tazacorte (Canary Islands, Spain) where the construction of a port in the 1970s caused changes to the coastal dynamics that allowed the appearance of a sandy beach as a result of contributions made by ravines and beach nourishment actions. In this context, the aim of this article is to carry out an analysis of the current situation of the beach and better understand its relationship with local ravines and the effects of recently constructed infrastructure. The management measures that have been executed to date are discussed and new measures are proposed. The methodology combines field work, variation of shorelines, LiDAR analysis and marine and atmospheric climate characterization. The results show a clear difference between the processes analysed in the long term where the variation in shoreline, beach area and volume indicate a positive trend (between 17.64 and 151.05 m, from 15,060 to 67,096 m2 and from 141,564 to 630,674m3 respectively), and which is mainly explained by the role of infrastructures (breakwaters and port), however, a short-term analysis from 2009 to 2020, the results show that the beach and the seafront continue to flood as a consequence of marine storms and runoff from the gullies, despite the inputs made the negative trend and an irregular behaviour, that is, years with a volume of 689.966 m3 in 2010 and years with 604,096 m3 in 2014. In this sense, the natural dynamics of the beach are discussed against a beach management that costs approximately 45,000 euros per year and requires continuous work during the winter and spring. Therefore, this research, through the management measures it proposes, aims to increase its natural resilience to extreme events from a long-term point of view.

中文翻译：

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利用多尺度时空岸线分析对海岛邻近盆地系统的城市海滩进行综合规划

近几十年来，沿海地区为了适应用户需求而不断进行沿海化进程，这给生态系统带来了重要变化。塔萨科尔特（西班牙加那利群岛）海岸就是一个例子，1970 年代港口的建设导致了海岸动态的变化，由于沟壑和海滩滋养活动的作用，沙滩出现了。 。在此背景下，本文的目的是对海滩现状进行分析，更好地了解其与当地沟壑的关系以及近期修建的基础设施的影响。讨论了迄今为止已执行的管理措施并提出了新的措施。该方法结合了实地工作、海岸线变化、激光雷达分析以及海洋和大气气候特征。结果显示，长期分析的过程之间存在明显差异，其中海岸线、海滩面积和体积的变化表明呈正趋势（分别在 17.64 和 151.05 m 之间、从 15,060 到 67,096 m2 以及从 141,564 到 630,674m3），并且这主要是由基础设施（防波堤和港口）的作用来解释的，然而，从2009年到2020年的短期分析结果显示，由于海洋风暴和沟壑径流，海滩和海滨继续遭受洪水侵袭，尽管输入造成了负面趋势和不规则行为，即 2010 年体积为 689.966 立方米，2014 年体积为 604,096 立方米。从这个意义上说，海滩的自然动态是根据海滩管理来讨论的：每年的费用约为 45,000 欧元，并且需要在冬季和春季持续工作。因此，本研究旨在通过其提出的管理措施，从长远角度提高其对极端事件的自然恢复能力。