Monitoring coastal erosion and flooding in deltaic environment is a major challenge. The uncertainties associated with land based methods and remote sensing approaches affect the levels of accuracy, reliability and usability of the output maps generated. This study monitored flooding and erosion activities in a flood prone fishing community (Fuvemeh) in the Volta Delta in Ghana using Unmanned Aerial Vehicles (UAVs) or drone technology. The study revealed that coastal flooding and coastal erosion have destroyed sources of livelihood and increased risk to life and property in the Volta Delta communities. It was identified that between 2005 and 2017 the shoreline has moved several meters inland (over 100 m along some transects) in some areas, while in other areas about 24,057 m2 land has been gained (about 80 m along some transects) that can serve as natural fish landing site. It emerged that over 77 houses have been destroyed which resulted in the displacement of over 300 inhabitants between 2005 and 2017. The study estimated that about 37% of the total land area in Fuvemeh has been lost as a result of erosion. Coastal erosion and flooding are major environmental challenges in the Volta delta. Coastal erosion has destroyed natural fish landing sites, which has affected the local fishing business (the main source of livelihood) and increased poverty. Coastal flooding has displaced inhabitants from their homes and increased migration from the Fuvemeh community.

中文翻译：

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无人机作为加纳伏尔塔三角洲沿海洪水监测的工具

监测三角洲环境中的海岸侵蚀和洪水是一项重大挑战。与基于陆地的方法和遥感方法相关的不确定性会影响所生成输出地图的准确性，可靠性和可用性。这项研究使用无人飞行器（UAV）或无人机技术监测了加纳Volta三角洲易发洪水捕鱼社区（Fuvemeh）的洪水和侵蚀活动。研究表明，沿海洪灾和海岸侵蚀破坏了生活来源，并增加了伏尔塔三角洲社区的生命和财产风险。据确定，2005年至2017年间，海岸线在某些地区向内陆移动了几米（沿某些样带超过100 m），而在其他地区，移动了约24处，已经获得了057平方米的土地（沿某些样带约80 m），可以作为天然鱼的着陆点。结果表明，2005年至2017年间，超过77座房屋被摧毁，导致300多名居民流离失所。该研究估计，由于侵蚀，在Fuvemeh的总土地面积中约有37％丧失了。沿海侵蚀和洪水是伏尔塔三角洲的主要环境挑战。沿海侵蚀破坏了自然鱼类的着陆点，这影响了当地的捕鱼业务（主要的生计来源）并加剧了贫困。沿海洪灾已使居民流离失所，并增加了来自Fuvemeh社区的移民。该研究估计，由于侵蚀，在Fuvemeh的总土地面积中约有37％丧失了。沿海侵蚀和洪水是伏尔塔三角洲的主要环境挑战。沿海侵蚀破坏了自然鱼类的着陆点，这影响了当地的捕鱼业务（主要的生计来源）并加剧了贫困。沿海洪灾已使居民流离失所，并增加了来自Fuvemeh社区的移民。该研究估计，由于侵蚀，在Fuvemeh的总土地面积中约有37％丧失了。沿海侵蚀和洪水是伏尔塔三角洲的主要环境挑战。沿海侵蚀破坏了自然鱼的着陆点，这影响了当地的捕鱼业务（主要的生计来源）并加剧了贫困。沿海洪灾已使居民流离失所，并增加了来自Fuvemeh社区的移民。