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首页> 外文期刊>Ocean & coastal management >Hard protection structures as a principal coastal erosion management strategy along the Caribbean coast of Colombia. A chronicle of pitfalls
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Hard protection structures as a principal coastal erosion management strategy along the Caribbean coast of Colombia. A chronicle of pitfalls

机译：硬保护结构是哥伦比亚加勒比海沿岸的主要海岸侵蚀管理策略。陷阱的历史

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摘要

Over the last 50 years, coastal erosion has become a serious problem, rising in magnitude and dominance along the Caribbean coastline of Colombia. Circa 50% of this important area for the country is undergoing serious erosion problems related to a multiplicity of factors contrasted by their degree of influence and magnitude, e.g. sedimentary imbalances, extreme waves, ecosystems destruction and sea level rise. Coastal protection related with hard structures has been the first, and in some cases, the only management strategy for these erosion problems. At the beginning of 2016, at least 1484 hard structures (both cross and longshore, such as, groins, seawalls, breakwaters, amongst others) have been built along the Colombian Caribbean coast, the highest concentrations being found in tourist cities. A significant percentage (close to 90%) of these hard structures have not been very successful or have failed in their purpose. These hard structures have altered the natural conditions of the study area, producing impacts such as i) coastal armoring, ii) reduced sediment supplies to downdrift areas, iii) intensification of erosion processes, iv) generation of nearby new erosion hot spots, v) deterioration of coastal scenery quality, among others. This paper describes and evaluates the functionality of coastal protection strategies used up to the present and delves into management aspects of coastal protection in the Caribbean coast of Colombia. It also indicates the current and future coastal protection scene for the region and highlights major trends and challenges faced by users, land owners, and coastal managers. (C) 2017 Elsevier Ltd. All rights reserved.
机译：在过去的50年中，海岸侵蚀已成为一个严重的问题，在哥伦比亚的加勒比海海岸线上，海岸侵蚀的规模和主导地位不断上升。该国这个重要地区的大约50％都在遭受严重的侵蚀问题，这些侵蚀问题涉及多种因素，而影响程度和规模则与此形成鲜明对比。沉积失衡，极端海浪，生态系统破坏和海平面上升。与硬结构有关的海岸保护是解决这些侵蚀问题的第一个，在某些情况下也是唯一的管理策略。 2016年初，在哥伦比亚加勒比海沿岸至少建造了1484个硬结构（包括横梁和长岸，例如腹股沟，海堤，防波堤等），其中旅游城市的集中度最高。这些硬结构中有很大比例（接近90％）的用途不是很成功或已经失败。这些坚硬的结构改变了研究区域的自然条件，产生了以下影响，例如：i）沿海装甲，ii）减少了向下沉地区的沉积物供应，iii）侵蚀过程的加剧，iv）附近新侵蚀热点的产生，v）沿海风光质量下降等。本文描述并评估了迄今为止使用的海岸保护策略的功能，并深入研究了哥伦比亚加勒比海海岸的海岸保护管理方面。它还指出了该地区当前和未来的海岸保护形势，并突出了用户，土地所有者和海岸管理者面临的主要趋势和挑战。 （C）2017 Elsevier Ltd.保留所有权利。

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