沿海前沙丘扩大--海平面变化的标志?卡瓦茨特海滩沙丘系统的一个例子

A. Baltakova
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引用次数: 0

摘要

海平面上升是气候变化的影响之一,黑海也受到了影响,尽管它与世界海洋隔绝。因此,世界各地都有前沙丘山脊向内陆移动以及新形成的山脊与老的次生地貌重叠的报道,如抛物线沙丘、沙丘地等。在 2023 年的实地考察中,在 Kavatsite 前沙丘山脊就观察到了这种新形成的堆积物向老的灰色沙丘迁移的现象。无人机摄影测量和生成的正射影像镶嵌图与 20 世纪初的航空档案图像进行的对比分析表明,主要沙丘山脊向内陆迁移了 20 多米,海滩侵蚀也加剧了。关于海平面加速上升的趋势,应特别注意沿海地区的人为活动,包括海滩沙丘系统--海岸波浪作用的第一道天然屏障。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Coastal foredune enlargement – a sign of sea-level change? An example from the Kavatsite beach-dune system
Sea level rise is one of the effects of climate change and the Black Sea is affected, regardless its isolated position from the World Ocean. As a consequent, in various locations worldwide is reported shifting of foredune ridges towards inland and overlapping of newly formed ridges over older secondary features, as parabolic dunes, dune fields, etc. During the field study in 2023, in the Kavatsite foredune ridge was observed such migration of newly formed accumulations on older grey dunes. Comparative analysis of UAV-based photogrammetry and generated orthophoto mosaic overlaid to archive aerial images from the early 20th century showed over 20 m migration of the primary dune ridge inland and also increased beach erosion. Regarding the accelerating sea rise tendency, special attention should be taken to the anthropogenic activities in the coastal zone, including the beach-dune systems – the first natural barrier to the wave action on coasts.
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