摘要
据钦州湾2007年1—2月的实测潮流,结合径流、潮汐等资料,经水动力和港湾地形综合分析揭示:钦州湾的潮流深槽是潮流作用于葫芦形复式港湾的必然产物,是在内湾纳潮蓄能、湾颈狭道强流、颈口岛礁分流喷射冲刷而成的。通过对潮流流路和强度的分析,对潮流深槽的稳定性进行了探讨;进而通过湾颈流速-内湾纳潮关系计算,给出了潮流深槽稳定的临界条件。
The data from the tidal current measurements conducted in the Qinzhou Bay in January and February 2007,and the other kind of data such as the runoffs,the tidal level,etc.are also used for comprehensive analyses of the hydrodynamics and the topography of the bay.It is learnt from the analyses that the tidal current channels in the Qinzhou Bay results from the tidal current effects on the calabash-shaped double-bays.In addition the tidal prism with its potential energy which are contained in the inner bay,the strong current which is generated at the narrow cervical part of the calabash-like bays,the islands distributed in the cervical past which make the strong current furcate further into the flushing branches form ation of the fidal channels.Furthermore the paths of the flushing currents with their flowing strengths are also analyzed in order to discuss the stability of the tidal channels.Finally the relationship between the flushing current speed at the cervical part and the tidal prism in the inner bay are determined to derive the critical conditions for the stability of the tidal channels.
出处
《海岸工程》
2010年第3期43-50,共8页
Coastal Engineering
基金
我国近海海洋综合调查与评价专项课题--广西重点港湾测绘及沉积动力调查与研究(GX908-01-08)
关键词
钦州湾
潮流深槽
水动力
港湾地形
稳定性
临界条件
Qinzhou Bay
tidal channels
hydrodynamics
topography in the bay
stability
critical condition
