摘要
统计了2006—2007年中国近海环境调查的透明度数据,绘制了中国近海4个季节的透明度分布图,分析了透明度的分布特征及季节变化。结果表明,水深和入海径流对中国近海透明度分布影响最大。总体上,除长江口等重要河口区外,透明度等值线分布趋势基本与等深线一致,即近岸浅水区透明度最小,外海深水区透明度最大。由渤海至南海,透明度有不断增大的趋势。统计表明,冬季透明度最小,夏季透明度最大。从透明度分布特征上看,长江口及其以东海域随季节的变化最为显著。而从透明度值变化上看,渤海海域随季节的变化最为显著。与历史数据对比,渤海、长江口以东海域及海南岛以西海域透明度值的观测结果明显减小。
This study analyzes the seawater transparency data in the offshore waters of China measured from 2006 to 2007. The seasonal distribution of the transparency was obtained. The results show that the distribution of the transparency is mainly influenced by the water depth and the runoff into the sea. In gen- eral, the transparency increases from the Bohai Sea to the South China Sea. Its contours tend to be parallel to the isobaths and show a low value in the shallow waters and a high value in the deep waters, excluding the areas nearby the Changjiang River Estuary. In addition, the results also show minimum values in win- ter and maxmum values in summer based on the statistics. This study also indicates that the transparency in the Bohai Sea,Changjiang River Estuary and its eastern areas,the western region off the Hainan Island decreases prominently compared with the historical data. Key words ： Seawater transparency ; Distribution cy;~Offshore waters of China features of transparency ; Seasonal variability of transparen
出处
《海洋科学进展》
CAS
CSCD
北大核心
2015年第1期38-44,共7页
Advances in Marine Science
基金
国家自然科学基金--黄海暖流的多时相特征及其发生机制研究(41376038)
国家海洋局科技司专项子课题--黑潮结构时空变化特征对中国近海环流的影响分析(GASI-03-01-01-02)
国家重大科学研究计划--太平洋印度洋对全变暖的响应及其对气候变化的调控作用-热带太平洋印度洋观测(2012CB955601)
科技部公益性行业科研专项--常用海底声纳测量仪器计量检测关键技术研究与示范应用(201305034)
基金委山东省海洋科学研究中心联合资助项目--海洋环境动力学和数值模拟(U1406404)
关键词
海水透明度
透明度分布特征
透明度季节变化
中国近海
Seawater transparency
Distribution features of transparency
Seasonal variability of transparency
Offshore waters of China
