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首页> 外文期刊>Earth Surface Processes and Landforms: The journal of the British Geomorphological Research Group >An initial evaluation of drone-based monitoring of boulder beaches in Galicia, north-western Spain
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An initial evaluation of drone-based monitoring of boulder beaches in Galicia, north-western Spain

机译：在西班牙西北部加利西亚，对以无人机为基础的巨石海滩进行监测的初步评估

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摘要

Low altitude flights by a micro-drone were made in 2012 and 2013 over two boulder beaches in north-western Spain. Geographical information system software was used to map the data. Boulder outlines from the first flight were recorded on 4796 clasts at Laxe Brava and 2508 clasts at Oia. Changes in location were identified by overlaying these outlines on the 2013 images. About 17.5% of the boulders (mean surface area 0.32m(2)) moved at Laxe Brava and about 53% (mean surface area 0.23m(2)) at Oia. Most movement on both beaches was between the mid-tide to about 2m above the high tidal level. The location and elevation of the highest points were also recorded on the 2012 images on 4093 boulders at Laxe Brava and 3324 boulders at Oia. These elevations were compared with the elevations at the same locations in 2013. The occurrence and scale of the elevational changes were generally consistent with changes in the boulder outlines. The study confirmed that boulder beaches can be cheaply and effectively monitored using high resolution, micro-drone technology. Copyright (c) 2014 John Wiley & Sons, Ltd.
机译：微型无人机在2012年和2013年在西班牙西北部的两个巨石海滩上进行了低空飞行。地理信息系统软件用于绘制数据。第一次飞行的巨石轮廓记录在Laxe Brava的4796块和Oia的2508块。通过将这些轮廓叠加在2013年的图像上来确定位置的变化。约有17.5％的巨石（平均表面积0.32m（2））在Laxe Brava移动，约有53％（平均表面积0.23m（2））在伊亚移动。两个海滩上的大多数运动都在潮汐中期至高潮水位以上约2m之间。最高点的位置和海拔也记录在2012年的图像上，分别位于Laxe Brava的4093块巨石和Oia的3324块巨石上。将这些海拔高度与2013年相同地点的海拔高度进行了比较。海拔高度变化的发生和规模通常与巨石轮廓线的变化一致。该研究证实，使用高分辨率的微无人机技术可以廉价有效地监控巨石滩。版权所有（c）2014 John Wiley＆Sons，Ltd.

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