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应用探地雷达对广东省湛江南三岛的海岸沙丘地进行内部结构的探测,分析其形成发育的过程,并对探地雷达图像进行数据处理,结果表明:迎风坡探地雷达图像中反映了丰富的前积层理,解译为原沙丘被侵蚀后与被风力搬运来的沙混合重组,继而迭加增长并沿主风向移动;背风坡表现为滑塌沙与原背风坡的沙混合重组,继而陷落并平移;人工挖掘的矿坑改变了原沙丘地貌,但当矿坑废弃后,沙地与沙丘在风力作用下进行快速的自我修复,其反映了海岸沙丘的形成不受下覆地形的限制,而与风沙流的移动规律有关。
The ground penetrating radar was used to detect the internal structure of the coastal sand dune in the south three islands of Zhanjiang in Guangdong Province. The formation and development of the sand dune ground were analyzed. The ground penetrating radar images were processed. The results showed that: Rich pre-stratification theory, interpreted as the original sand dunes were eroded and mixed with the sand by the wind mixed reorganization, and then increase the growth and move along the main wind; leeward slope of the sand slide and the performance of the original leeward slope sand mixed reorganization , And then fall and pan; artificially excavated mines change the original dune landform, but when the mines are abandoned, sand and sand dunes undergo rapid self-healing under the influence of wind, reflecting the formation of coastal sand dunes that are not constrained by underlying terrain , But with the movement of sand flow regulation.