| 珠江河口区盐度变化周期特征分析——以磨刀门水道为例 |
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| 引用本文： | 章文,刘丙军,辛彦博,严淑兰.珠江河口区盐度变化周期特征分析——以磨刀门水道为例[J].热带地理,2013,33(1):28-33. |
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| 作者姓名： | 章文 刘丙军 辛彦博 严淑兰 |
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| 作者单位： | （1．中山大学 地理科学与规划学院水资源与环境系，广州 510275；2．珠江水利委员会水文局，广州 510611） |
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| 基金项目： | 国家自然科学基金项目(50909106,51009156);教育部青年教师培育项目(3161399);广东省科技计划项目(2011B030800008) |
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| 摘 要： | 珠江河口区具有三江汇流、八门入海的复杂河网，水动力条件存在多种不确定性，加之河口区水资源系统受快速城市化、河口挖沙与河道整治、上游水利工程调度、海平面上升等多重因素影响，盐水入侵现象异常复杂。选取磨刀门水道广昌站近10年来（2001―2011年）枯水期逐日及逐时盐度序列，应用小波分析方法，研究了珠江河口区―磨刀门水道盐度序列多时间尺度周期特征。研究结果表明：磨刀门水道盐度变化周期特征与潮汐周期特征一致，存在明显的日周期（24.6 h）、半月周期（14.8 d）及不明显的半日周期（12.3 h）、月周期（30 d）。
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| 关 键 词： | 盐度变化 周期特征 小波分析 珠江河口区 磨刀门水道 |
Analysis of the Characters of Saltwater Intrusion in the Pearl River Estuary Based on Salinity Data of Modaomen Waterway |
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| ZHANG Wen,LIU Bingjun,XIN Yanbo,.,YAN Shulan.Analysis of the Characters of Saltwater Intrusion in the Pearl River Estuary Based on Salinity Data of Modaomen Waterway[J].Tropical Geography,2013,33(1):28-33. |
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| Authors: | ZHANG Wen LIU Bingjun XIN Yanbo YAN Shulan |
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| Institution: | 1 (1.Department of Water Resources and Environment,Sun Yat-sen University,Guangzhou 510275,China; 2.Hydrology Bureau of Pearl River Conservancy Commission,Guangzhou 510611,China) |
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| Abstract: | The Pearl River Estuary contains a complex river network which characterizes the confluence of the three rivers in the Pearl system and the eight waterways to the sea. Hence，distinct uncertainties exist within the hydrodynamic force. Additional elements，for instance，fast urbanization，estuary sand excavation，river realignment，hydraulic engineering and sea level rise contribute to the salt water intrusion in water resource system located in estuary area for its extreme complexity. In this paper，the data of daily and hourly salinity sequence in dry season for the last 10 years（2001-2011）from Guangchang Station in the Modaomen Waterway are studied by using wavelet analysis. The result shows that consistence truly exists in the periodic features between salinity changes in the Modaomen Waterway and the tide. The day period (24.6 h) and half-month period (14.6 d) are evident，while the half-day period (12.3 h) and month period (30 d) not obvious. |
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| Keywords: | salinity changes periodic features wavelet analysis the Pearl River Estuary the Modaomen Waterway |
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