| 珠江口伶仃洋海平面变化趋势研究 |
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| 引用本文： | 杨清书,罗宪林.珠江口伶仃洋海平面变化趋势研究[J].地理科学,1999,19(2):125-127. |
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| 作者姓名： | 杨清书 罗宪林 |
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| 作者单位： | 中山大学河口海岸研究所,广州,510275 |
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| 摘 要： | 根据珠江口伶仃洋三灶，赤湾，香港三个站的验潮记录，应用傅氏变换方法对月均潮序列先做离散傅氏变换，并将周期小于４ａ的波动幅设为零，再进行反傅氏变换，以消除小于４ａ的周期波动对确定海平面变化趋势的影响，最后由低通序列一元线性回归分析确定穆江口各站的海平面变化趋势。
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| 关 键 词： | 海平面 傅氏变换 经验正交函数 珠江口 伶仃洋 |
THE SECULAR TRENDS OF SEA LEVEL CHANGE IN LINGDINGYANG ESTUARY |
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| Yang Qingshu,Luo Xianlin.THE SECULAR TRENDS OF SEA LEVEL CHANGE IN LINGDINGYANG ESTUARY[J].Scientia Geographica Sinica,1999,19(2):125-127. |
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| Authors: | Yang Qingshu Luo Xianlin |
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| Abstract: | Tidal gauge records are collected from three tidal stations in Lingdingyang Estuary. Fourier transform and inverse fourier transform are used to eliminate the components that periods are less than 4a from monthly mean time series. The secular trends of sea level are determined by means of linear regression of low passed time series. The empirical orthogonal function (EOF) is used to analyse the spatial and temperal characteristics of sea level change in Lingdingyang Estuary. The average rate of sea level change in Lingdingyang Estuary, which is estimated by the time series of the main mode, is 0.89 mm/a. |
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| Keywords: | Sea level Fourier transform Empirical orthogonal function Lingdingyang Estuary |
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