Sediment resuspension in the Lake Taihu, China
Sediment resuspension in the Lake Taihu, China
复制标题
DOI：
10.1007/s11434-006-0731-2
复制
发表时间：
2006-03
影响因子：
--
通讯作者：
Chun-Jie Hu;Weiping Hu;Fabing Zhang;Zhidan Hu;Xiang-hua Li;Yonggen Chen
中科院分区：
文献类型：
--
作者：
Chun-Jie Hu;Weiping Hu;Fabing Zhang;Zhidan Hu;Xiang-hua Li;Yonggen Chen
为了检测中国东部大型浅湖太湖的表层沉积物再悬浮强度，在对使用创新的多级水样采集器采集的水样进行分析的基础上，测量了悬浮沉积物浓度（SSC）。结果表明，在平静的天气条件下，整个水体的SSC相对均匀。但当大风发生时，底层的SSC比表层大1~2个数量级；因此，在这种情况下，不能仅使用表层的SSC值来估计水体中总悬浮物的量。此外，扰动的深度，或者说由风波感应流引起的沉积物层的厚度，约为100毫米。
In order to examine the intensity of surficial sediment resuspension in Lake Taihu, a large shallow lake in eastern China, suspended sediment concentrations (SSCs) were measured on the basis of analysis of water samples collected using an innovative multi-level water sampler. The results show that under calm weather conditions, the SSC is relatively homogenous through the entire water column. However, when strong winds occur, the SSC in the bottom layer is 1–2 orders of magnitude greater than in the surface layer; thus, in this case, the amount of total suspended matter in the water column cannot be estimated using the SSC values of the surface layer alone. Furthermore, the depth of disturbance, or the thickness of the sediment layer that is set in motion by wind-wave induced currents, is of the order of 100mm.