Detection and quantification of sediment remobilization processes using a dynamic penetrometer
Detection and quantification of sediment remobilization processes using a dynamic penetrometer
复制标题
使用动态贯入计检测和量化沉积物再流动过程
DOI：
10.23919/oceans.2011.6106914
复制
发表时间：
2011
期刊：
影响因子：
--
通讯作者：
A. Kopf
中科院分区：
文献类型：
--
作者：
N. Stark;A. Kopf
泥沙再动员过程对海岸形态和近海工程有很大的影响。在许多情况下，需要采取对策以保持建筑物或海岸线的稳定。为了最有效地应用这些对策，至关重要的是：(i)定位和绘制泥沙侵蚀和沉积区域，以及（ii）以高时空分辨率量化流动泥沙。在这项研究中，我们测试了小型动态穿透仪Nimrod作为快速检测和定量沉积物再动员过程的工具。超过20项调查涉及约5000项部署，涵盖了自然引起的沉积物再动员过程，如移动沙洲和分类河床，以及人为引起的过程，如航道淤积和冲刷。这些调查是在不同沉积物结构的地区进行的，从软粘土到硬石英和碳酸盐砂。此外，在受控边界条件下，在波浪通道中完成了初步实验（Franzius institute, Hannover, Germany）。
Sediment remobilization processes have a high impact on coastal morphology as well as offshore engineering. In many cases countermeasures are required to preserve the stability of the construction or coastline. To apply such countermeasures in the most effective manner, it is crucial to (i) locate and map areas of sediment erosion and deposition and to (ii) quantify the mobilized sediment with a high spatial and temporal resolution. In this study we tested the small dynamic penetrometer Nimrod as a tool for rapid detection and quantification of sediment remobilization processes. More than 20 surveys with about 5000 deployments covered natural-induced sediment remobilization processes such as shifting sandbars and sorted bedforms as well as man-induced processes such as the siltation in navigation channels and scour. The surveys were carried out in areas of different sediment textures ranging from soft clay to hard quartz and carbonate sands. Additionally, preliminary experiments under controlled boundary conditions were accomplished in a wave channel (Franzius Institut, Hannover, Germany).