CHARACTERISTICS OF SUSPENDED SEDIMENT TRANSPORT OF COASTAL WATERS IN SOUTH WENDENG
-
摘要:
依据2015年5月悬浮泥沙实测资料，计算各站不同层位悬沙浓度，分析研究区海域的悬沙时空分布特征，利用小波变换分析悬沙浓度变化周期，结合余流场探讨了研究区的悬沙整体输运特征。结果表明，悬沙浓度由表层到底层依次增大；悬沙浓度变化的周期约为6 h，与正规半日潮流特征吻合较好；在长会口一带、张家埠新港防波堤及好当家渔港防波堤附近区域，悬沙净输运方向与落潮流方向一致；好当家渔港内部悬沙净输运方向与涨潮流方向一致；五垒岛湾与靖海湾呈顺时针环流输运，湾内部悬沙净输运方向与涨潮流方向一致，指向湾内。
Abstract:In-situ measurement of suspended sediment was conducted in the coastal waters of Wendeng in May 2015. With the measured data, we calculated the concentrations of the suspended sediments in different water layers and analyzed their spatial and temporal distribution patterns. Wavelet transform was done to define the cyclicity of the suspended matter. Combined with the residual current field, the overall transport characteristics of the suspended sediment in the study area are scrutinized and summarized. Results show that the concentration of suspended sediment has a periodic characteristic of every 6 hours, in good agreement with the regular half-day tidal current, and increases from surface to bottom. In the areas dominated by the residual flow, such as the Changhuikou area, the area near Zhangjiabu Newport breakwater and the area near the Haodangjia fishing harbor breakwater, suspended sediment transporting direction is same as the ebb direction. In the area near the Haodangjia fishing harbor, however, the suspended sediment moves following the direction flood tide. Suspended sediment transportation is in a clockwise manner in the Wuleidao Bay and the Jinghai Bay, following the ebb current.
-
-
[1] 刘杰, 冯秀丽, 刘潇, 等.山东半岛东部靖海湾及邻近海域表层沉积物分布和输运特征分析[J].中国海洋大学学报:自然科学版, 2013, 43(5):77-81. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=qdhydxxb201305012
[2] 刘潇, 冯秀丽, 刘杰, 等.山东半岛靖海湾及其附近海域悬浮泥沙分布与变化[J].海洋地质与第四纪地质, 2012, 32(6):9-15. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=hydzydsjdz201206002
[3] 汤毓祥.潮汐余流研究简况[J].海洋科学进展, 1987, 5(3):75-82. http://www.cnki.com.cn/Article/CJFDTotal-HBHH198703013.htm
[4] Montes S. Mechanics of sediment transport by M. S. YALIN[J]. American Journal of Physiology, 1977, 233(3):C92-98. doi: 10.1152/ajpcell.1977.233.3.C92
[5] 陈斌, 刘健, 高飞.莱州湾悬沙输运机制研究[J].水科学进展, 2015, 26(6):857-866. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=skxjz201506012
[6] 江文胜, 苏健, 杨华, 等.渤海悬浮物浓度分布和水动力特征的关系[J].海洋学报, 2002, 24(S1):213-218. http://www.cqvip.com/Main/Detail.aspx?id=1000451372
[7] 杨晓东, 姚炎明, 蒋国俊, 等.乐清湾悬沙输移机制分析[J].海洋通报, 2011, 30(1):53-59. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=hytb201101009
[8] Tee K T. Tide-induced residual current—verification of a numerical model [J]. Journal of Physical Oceanography, 2010, 7(3): 396-402. http://adsabs.harvard.edu/abs/1977JPO.....7..396T
[9] Jr Luettich R A, Carr S D, Reynolds-Fleming J V, et al. Semi-diurnal seiching in a shallow, micro-tidal lagoonal estuary[J]. Continental Shelf Research, 2002, 22(11-13):1669-1681. doi: 10.1016/S0278-4343(02)00031-6
[10] Mallat S G. A theory for multiresolution signal decomposition: the wavelet representation [J]. IEEE Transactions on Pattern Analysis & Machine Intelligence, 1989, 11(7):674-693. doi: 10.1109/34.192463
-
下载:
图(9)
计量
- 文章访问数: 359
- PDF下载数: 14
- 施引文献: 0