海南岛万泉河口博鳌潮汐汊道演变及沿岸输沙率的计算

摘要/Abstract

摘要： 通过收集不同时期的遥感资料, 结合已往的研究, 分析了海南岛万泉河口博鳌潮汐汊道演变的年际与季节性变化规律。根据实测波浪资料计算了年沿岸输沙率及沿岸输沙率的季节变化。结果表明, 博鳌潮汐汉道的演变具有周期性的规律, 年际特征为南、北侧沙嘴分别向口门进积、口门总体变窄;从10a以上的尺度来看, 封堵口门的趋势不断被洪季时的洪水和风暴潮增水所打断。另外通过沙嘴体积变化反推了博鳌近岸的沿岸输沙率, 其结果与CERC公式计算结果一致, 表明此公式在博鳌岸段有较好的适用性。

关键词: 遥感, 沿岸输沙率, 潮汐汊道, 博鳌

Abstract: Based on the collected remote sensing and wave measurement data, this study investigated the interannual and seasonal evolution of the Boao tidal inlet, Hainan Province. The annual and seasonal longshore sediment transport was calculated based on CERC formula. The results show that on the time scale of inter-annually, the inlet throat is subject to a shrink due to the propagation of sand spits on its southern and northern sides. This decrease of inlet throat is interrupted by storm river discharge brought by typhoons during the wet season in the region. Based on the sand mass conservative law, the longshore sediment transport is inversely estimated. The magnitude of thus obtained sediment transport is similar to that based on CERC formula, although some discrepancy exists, which indicates the formula is adapted to Boao.

Key words: remote sensing, longshore sediment transport, tidal inlet, Boao, Hainan Province

黄宝霞, 龚文平, 温晶. 海南岛万泉河口博鳌潮汐汊道演变及沿岸输沙率的计算[J]. 海洋学研究, 2012, 30(3): 19-29.

HUANG Bao-xia, GONG Wen-ping, Wen Jing. Evolution of the Boao tidal inlet, Hainan Province and calculation of the longshore sediment transport[J]. Journal of Marine Sciences, 2012, 30(3): 19-29.

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