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潮间带小海湾围堤对湾外水下岸坡的影响
引用本文:劳治声,金庆祥.潮间带小海湾围堤对湾外水下岸坡的影响[J].海洋湖沼通报,1995(1):7-17.
作者姓名:劳治声  金庆祥
作者单位:华东师范大学河口海岸研究所
摘    要:分析了杭州湾北岸一个潮间带小海湾-炮台湾及其前沿海域的流场、含沙量分布及水下地形的变化,指出小海湾内水流主要受湾外浅水水流控制,在独特的边界地影响下,湾内在不同时段内出现历时较短的水平环流,流场变化较快,小水深时水体含沙量较高,含沙量随水深和水流和变化而急剧变化。对湾外浅水水域水流的挟沙力了计算,并讨论了炮台湾围堤后水流挟沙力的变化,给出围堤后水下岸坡剖面变动的预测,经与实测比较,结果是令人满意的

关 键 词:潮间带  小海湾  围堤  水下岸坡

ON THE INFLUENCE OF RECLAIMING LAND FROM A CREEK IN INTERTIDAL ZONE ON SHOREFACE
Lao Zhisheng,Jin Qingxiang,Chen Quan.ON THE INFLUENCE OF RECLAIMING LAND FROM A CREEK IN INTERTIDAL ZONE ON SHOREFACE[J].Transaction of Oceanology and Limnology,1995(1):7-17.
Authors:Lao Zhisheng  Jin Qingxiang  Chen Quan
Abstract:The current field, the distribution of sediment content and the change of submerged topography of Paotai Creek-a creek in the intertidal zone of the northern bank of Hangzhou Bay and its front water area are analyzed. It is pointed out that in the creek the current is mainly controled by the current of its outward shoal water,under the influence of the special boundary topography, there are horizontal circulations which occur. at different times with shorter durations, the current field changes rapidly, the sediment content is higher when the depth is small(<20cm),and varies sharply with the changes of the depth and the current. The sediment carrying capacity of the shoal water out of the creek is calculated, its changes after banking a1ong the mouth of Paotai Creek are discussed. This paper gives a prediction of the change of the shoreface profile after banking, which is compared with the field measurement. The results are satisfactory.
Keywords:intertidal zone  creek  banking  Shoreface  influence
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