Base on the sea level, current, suspended sediment concentration data observed during the dry season in April 2007 and the rainy season in July 2007 in the Tuy Phong Bay, and combined with the annual data of wind and wave from May 2007 to April 2008, the distribution and transport trend of suspended sediment in this area was analyzed. We also carried out dynamic mechanism analysis of suspended sediment transport using the mechanism decomposition method. We found that the suspended sediment concentration had the seasonal property of being lower in dry season and higher in rainy season, the tidal property of being higher during spring tide and being lower during neap tide, and the spatial property of being higher at the east and west sides and being lower in the middle of the bay and of being higher in the near coast region and being lower in the offshore region. The direction of sediment transport per width was consistent with the residual current direction, which was offshore in dry season and onshore in rainy season. The result of transport dynamic analysis showed that the Eulerian residual current was the main control factor for suspended sediment transport, and that the direction and mass of sediment transportation were determined by the residual current, with the secondary control factors being vertical movement in deeper region and tidal pumping in shallow region.
YANG Yang
,
LI Rui-xiang
,
LIU Yu-qiang
,
ZHU Peng-li
,
LU Rong
. Distribution and dynamic mechanism of suspended sediment in the Tuy Phong Bay[J]. Journal of Tropical Oceanography, 2014
, 33(6)
: 24
-30
.
DOI: 10.11978/j.issn.1009-5470.2014.06.004
[1] 陈沈良, 谷国传. 2000. 杭州湾口悬沙浓度变化与模拟[J]. 泥沙研究, 5: 45-50.
[2] 陈沈良, 杨世伦, 吴瑞明. 2004. 杭州湾北岸潮滩沉积物粒度的时间变化及其沉积动力学意义[J]. 海洋科学进展, 22(3): 299-305.
[3] 杜家笔, 裴艳东, 高建华, 等. 2012. 弱动力浅海中的悬沙输运 机制: 以天津港附近海域为例[J]. 海洋学报, 34(1): 136-144.
[4] 高建华, 高抒, 董礼先, 等. 2003. 鸭绿江河口地区沉积物特征及悬沙输送[J]. 海洋通报, 22(5): 26-33.
[5] 姜杰. 2006. 利用遥感反演悬浮泥沙浓度的方法研究[J]. 海洋地质动态, 22(9): 32-34.
[6] 江文胜, 王厚杰. 2005. 莱州湾悬浮泥沙分布形态及其与底质分布的关系[J]. 海洋与湖沼, 36(2): 97-104.
[7] 刘愉强, 杨阳, 廖世智, 等. 2011. 越南巴达棱湾沿岸海域周年风和浪的观测分析[J]. 热带海洋学报, 30(5): 62-66.
[8] 茅志昌, 潘定安, 沈焕庭. 2001. 长江河口悬沙的运动方式与沉积形态特征分析[J]. 地理研究, 2(20): 170-177.
[9] 朱首贤, 丁平兴, 史峰岩, 等. 2000. 杭州湾、长江口余流及其物质输运作用的模拟研究 Ⅱ. 冬季余流及其对物质的输运作用[J]. 海洋学报, 22(6): 1-12.
[10] 宋立松, 余祈文. 2003. 杭州湾悬沙净输移机制探讨[J]. 泥沙研究, 3: 48-52.
[11] 王海龙, 李国胜. 2009. 黄河入海泥沙在渤海中悬移输送季节变化的数值研究[J]. 海洋与湖沼, 40(2): 129-137.
[12] 魏志强, 杨阳, 刘愉强, 等. 2012. 越南中部沿岸潮汐、潮流特征[J]. 海洋通报, 31(5): 515-519.
[13] 吴祥柏, 汪亚平, 潘少明. 2008. 长江河口悬沙与盐分输运机制分析[J]. 海洋学研究, 26(4): 8-19.
[14] 许世远, 邵虚生. 1984. 杭州湾北岸滨岸的风暴沉积[J]. 中国科学, 12: 1136-1143.
[15] 许世远, 严钦尚, 陈中原. 1989. 长江三角洲风暴沉积系列研究[J]. 中国科学: B辑, 7: 767-773.
[16] 赵焕庭, 王丽荣, 宋朝景. 2007. 雷州半岛灯楼角沙岬的形成[J]. 热带地理, 27(5): 405-410.
[17] 周济福, 王涛, 李家春. 1999. 径流与潮流对长江口泥沙输运的影响[J]. 水动力学研究与进展, 14(1): 90-100.
[18] 左书华, 张宁川, 李蓓, 等. 2009. 洋山深水港海域悬沙浓度时空变化及其动力原因[J]. 华东师范大学学报: 自然科学版, 3: 72-82.
[19] DYER K R. 1997. Estuaries: a physical introduction[M]．New York: John Wiley and Sons: 73-79.
[20] FALCONER R A, OWENS P H. 1990. Numerical modelling of suspended sediment fluxes in Estuary Waters, Estuarine[J]. Coastal and Shelf Science, 31: 745-762.
[21] OEY L Y, MELLOR G L, HIRES R I. 1985. A three-dimensional simulation of the Hudson- Raritan estuary, Part Ⅲ: salt flux analysis[J]. Journal of physical Oceanography, 15: 1771-1780.
[22] SU JILIAN, WANG KANGSHAN, LI YAN. 1992. Fronts and transport of suspended matter in the Hangzhou Bay[J]. Acta Ocenaologica Sinica, 12(1): 1-15.
