| 南海北部沿岸冬季水位亚潮波动特征研究 |
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| 引用本文： | 李立.南海北部沿岸冬季水位亚潮波动特征研究[J].热带海洋学报,1993(3). |
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| 作者姓名： | 李立 |
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| 作者单位： | 国家海洋局第三海洋研究所 厦门 |
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| 基金项目： | 国家自然科学基金(项目批准号:49070260) |
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| 摘 要： | 用时间序列分析方法研究了南海北部水位亚潮波动的基本特征。结果表明南海北部冬季水位亚潮波动能量以福建南部沿岸最强,广东沿岸仅为台湾海峡南部的一半左右,但二者具有相似的谱特征。各站的功率谱峰均出现在3.2,6.4,3.6和2.3d频带。其中3.2和6.4d波动能量最强。此外,在珠江口附近还有10.7d的较弱谱峰。与东海沿岸冬季情况类似,南海北部沿岸水位波动有很高的空间相关性,说明冬季我国东南沿海的亚潮波动受某一共同机制的控制。分析还表明水位波动一致地从东北向西南传播,但在不同岸段传播特征有相当差异。
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| 关 键 词： | 南海北部 冬季 水位 亚潮波动 时间序列分析 |
A STUDY OF WINTER SUBTIDAL SEA LEVEL FLUCTUATION ALONG THE NORTHERN COAST OF THE SOUTH CHINA SEA |
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| Li Li.A STUDY OF WINTER SUBTIDAL SEA LEVEL FLUCTUATION ALONG THE NORTHERN COAST OF THE SOUTH CHINA SEA[J].Journal of Tropical Oceanography,1993(3). |
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| Authors: | Li Li |
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| Abstract: | Methods of time series analysis are used to study the fundamental features of winter subtidal fluctuation of adjusted sea level (ASL) along the northern coast of the South China Sea, Results show that ASL fluctuation is most energetic along the west coast of Taiwan Strait off southern Fujian and decreases westward along Guangdong coast in a factor of 2. However , shapes of their power spectra are very similar. Spectra for all stations show peaks at 32, 6. 4, 3. 6 and 2. 3 day bands, with outstanding peaks at 32 and 6.4 day bands. There is one more secondary peak which appears at 10. 7 day band West of the Pearl River mouth. Similar to what happens off the Chinese coast of the East China Sea, ASL show very high longshore coherence which suggests that during winter subtidal sea level fluctuation along the southeastern coast of China is controlled by some common mechanism. Analysis also indicates that winter ASL fluctuation propagates from north to south along the coast, but with different propagating character for different coastal segments. |
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| Keywords: | the northern South China Sea winter sea level subticlal fluctuation time series analysis |
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