| 特枯水文年长江口南槽盐水入侵分析 |
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| 引用本文： | 陈沈良,张二凤,谷国传,李平. 特枯水文年长江口南槽盐水入侵分析[J]. 海洋通报, 2009, 28(3) |
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| 作者姓名： | 陈沈良 张二凤 谷国传 李平 |
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| 作者单位： | 华东师范大学,河口海岸学国家重点实验室,上海,200062;华东师范大学,河口海岸学国家重点实验室,上海,200062;华东师范大学,河口海岸学国家重点实验室,上海,200062;华东师范大学,河口海岸学国家重点实验室,上海,200062 |
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| 基金项目： | 国家自然科学基金,我国近海海洋综合调查与评价专项基金 |
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| 摘 要： | 2006年6月至2007年5月长江入海径流量较多年平均减少1/3,为特枯水文年.根据长江口南槽江亚北水道实测盐度等资料,分析了该特枯水文年的盐水入侵状况.结果显示:研究区该时间段几乎均为盐水所占据,96.6% 的天数处于盐水入侵状态;与常年相比,盐度具有年变幅大、洪枯季差异小、高盐月份多的特点.研究表明:盐水入侵主要受径、潮流控制,多发生在小径流量-大潮期;大通径流量 30 000 m3/s 是盐水入侵与否的阈值.
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| 关 键 词： | 特枯水文年 盐水入侵 盐度 径流量 长江口 |
Salt Intrusion in the South Passage of Yangtze River Estuary during Extraordinary Dry Year |
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| CHEN Shen-liang,ZHANG Er-feng,GU Guo-chuan,LI Ping. Salt Intrusion in the South Passage of Yangtze River Estuary during Extraordinary Dry Year[J]. Marine Science Bulletin, 2009, 28(3) |
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| Authors: | CHEN Shen-liang ZHANG Er-feng GU Guo-chuan LI Ping |
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| Affiliation: | State Key Laboratory of Estuarine and Coastal Research;East China Normal University;Shanghai 200062;China |
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| Abstract: | From June 2006 to May 2007, the water discharge of Yangtze River into the sea reduced about 1/3 of multiyear average, which is an extraordinary dry year. On the basis of measured salinity data in the South Passage of Yangtze River Estuary, results indicate that the study area was occupied by saline water almost all year round, and salt intrusion occurred in 96.6% days in the year, and the salinity presented great annual variations, small difference between flood and dry seasons, and much more high-salinity ... |
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| Keywords: | extraordinary dry year salt intrusion salinity river discharge the Yangtze River estuary |
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