| 珠江口咸潮入侵分析与经验模型——以磨刀门水道为例 |
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| 引用本文： | 陈水森,方立刚,李宏丽,张立新.珠江口咸潮入侵分析与经验模型——以磨刀门水道为例[J].水科学进展,2007,18(5):751-755. |
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| 作者姓名： | 陈水森 方立刚 李宏丽 张立新 |
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| 作者单位： | 1.北京师范大学遥感科学国家重点实验室, 北京, 100875; |
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| 基金项目： | 国家重点实验室基金;广东省自然科学基金;广东省科技厅科技计划 |
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| 摘 要： | 收集了2004-2006年珠江口磨刀门水道咸潮发生时测站(1~7)逐日定时观测的的含氯度、水位与流量数据,分析了各监测站含氯度与水位的日变化与年变化,导出了咸潮演变各过程中,含氯度与径流、潮流、河口地形等的关系式,建立了珠江口地区磨刀门水道咸潮入侵的经验模型。据此,模拟了2006年1月12日的磨刀门地区的咸潮入侵态势,经过和沿途各观测点验证发现与实测数据非常吻合。以含氯度等于250mg/L(饮用水的含氯度最大值)的点作为咸潮入侵的最远点,用简化修改后的盐度模拟模型计算了磨刀门咸潮入侵最大距离,并根据2006年1月12~20日的河口含氯度与最近的上游天河站的径流量实测数据计算出相应的咸潮入侵最大距离。研究表明,在河流枯水期(珠江河口通常是12月至翌年3月),只要获得当天河口的含氯度和上游测站的径流量数据,就能利用此经验模型估算出河流各点的含氯度,作出盐度模拟图,并估算出相应的咸潮入侵最大距离。
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| 关 键 词： | 珠江口 磨刀门水道 咸潮入侵 模拟 |
| 文章编号： | 1001-6791（2007）05-0751-05 |
| 收稿时间： | 2006-07-17 |
| 修稿时间： | 2006-11-15 |
Saltwater intrusion analysis and experiential model for Pearl River estuary, south China:A case study in Modaomen watercourse |
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| CHEN Shui-sen,FANG Li-gang,LI Hong-li,ZHANG Li-xin.Saltwater intrusion analysis and experiential model for Pearl River estuary, south China:A case study in Modaomen watercourse[J].Advances in Water Science,2007,18(5):751-755. |
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| Authors: | CHEN Shui-sen FANG Li-gang LI Hong-li ZHANG Li-xin |
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| Institution: | 1.State Key Laboratory of Remote Sensing Science, Jointly Sponsored by Beijing Normal University and the Institute of Remote Sensing Applications of Chinese Academy of Sciences, Beijing 100875, China;2.Public Lab.of Environment Science and Technology of Guangdong Province, Guangzhou Institute of Geography, Guangzhou 510070, China;3.Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China;4.Graduate School of Chinese Academy of Sciences, Beijing 100039, China |
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| Abstract: | Chlorosity,water level and river runoff from each saltwater intrusion observation station are collected in recent years(2004-2006) in Modaomen watercourse of Pear River Estary,south China,when the saltwater intrusion occurs.The daily and monthly change of chlorosity and water level at the observation stations are analyzed.The correlations among salinity,runoff,estuarine chlorosity and the geometry of estuary are analyzed synthetically,and the model formula between salinity and other hydrological factors(runoff,geometry of estuary and Kx) are deduced.Then,the simulation model for saltwater intrusion length from river mouth in Modaomen watercourse is established.Finally,the simulation values of the saltwater intrusion of Modaomen watercourse on January 12,2006 are calculated based on the model and are very close to the observed values of field.Thus,the maximum length(chlorine: 250 mg/L,upper limit of drinking water) of the saltwater intrusion is calculated based on the modified model parameters of salinity.So,in the dry season(usually last December to next March),the model can provide decision making for quick reaction to saltwater intrusion event,and the corresponding measures can be early adopted and the disaster of saltwater intrusion is able to be expected and reduced to the minimization. |
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| Keywords: | Pearl River estuary Modaomen watercourse saltwater intrusion simulation |
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