| 山东荣成月湖潮汐汊道的时间-流速不对称特征 |
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| 引用本文： | 贾建军,高抒,薛允传.山东荣成月湖潮汐汊道的时间-流速不对称特征[J].海洋学报,2003,25(3):68-76. |
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| 作者姓名： | 贾建军 高抒 薛允传 |
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| 作者单位： | 1.南京大学, 海岸与海岛开发教育部重点实验室, 江苏, 南京, 210093 |
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| 基金项目： | 国家杰出青年科学基金(49725612),国家自然科学基金青年基金(40206006) |
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| 摘 要： | 月湖是山东半岛东端的一个小型潮汐汊道.在月湖进行了潮位、潮汐观测及地形测量,运用两种方法从潮位记录推算出口门落潮主干道垂线平均流速和断面平均流速.发现除涨潮优势型和落潮优势型外,月湖还表现出另外两种时间-流速不对称,即涨潮历时大于落潮历时且涨潮流速大于落潮流速、涨潮历时小于落潮历时且涨潮流速小于落潮流速.月湖的时间-流速不对称特征与不规则潮汐、涨(落)潮的流速跟潮位的匹配关系、汊道口门的断面形态、口门特殊的水流结构及循环过程等因素有关.时间-流速不对称类型的研究,对于理解潮汐汊道系统的沉积动力行为及进行人工整治有一定意义.
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| 关 键 词： | 潮汐汊道 潮位 潮流 时间-流速不对称 月湖 |
| 文章编号： | 0253-4193(2003)03-0068-09 |
| 收稿时间： | 9/5/2001 12:00:00 AM |
| 修稿时间： | 2001年9月5日 |
Patterns of time-velocity asymmetry at the Yuehu Inlet, Shandong Peninsula, China |
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| JIA Jian-jun,GAO Shu and XUE Yun-chuan.Patterns of time-velocity asymmetry at the Yuehu Inlet, Shandong Peninsula, China[J].Acta Oceanologica Sinica (in Chinese),2003,25(3):68-76. |
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| Authors: | JIA Jian-jun GAO Shu and XUE Yun-chuan |
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| Institution: | 1.Key Laboratory for Coast and Island Development, Ministry of Education, Nanjing University, Nanjing 210093, China2.State Key Laboratory of Land and Resources Information System, Institute of Geography, Chinese Academy of Sciences, Beijing 100101, China |
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| Abstract: | The Yuehu is a small tidal inlet system located in the eastern Shandong Peninsula, China. In order to investigate the time-velocity asymmetric patterns of the system, hydrodynamic observations and bathymetric surveys were undertaken in the winter of 1998 and the summer of 1999. Based upon the measured tidal water levels and the calculated tidal currents, two types of additional time-velocity asymmetric patterns, other than the " flood-dominated" and "ebb-dominated"patterns, are identified: the duration of flood tide is longer (or shorter) than that of ebb tide, while the flood currents are stronger (or weaker) than the ebb currents. These patterns have been shown to be associated with the mixed and semi-diurnal dominated tides, the timing of the current velocity and water level at the entrance, the cross-section shape of the entrance channel, and the flow and circulation structures within the entrance channel. An understanding of such time-velocity asymmetric patterns is important in terms of the sediment dynamic behaviours and the artificial utilization of tidal inlets. |
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| Keywords: | tidal inlets water level tidal currents time-velocity asymmetry Yuehu Inlet |
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