| 2002年夏季粤东外海的海洋状况 |
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| 引用本文： | 许金电,郭小钢,李立,吴日升,靖春生.2002年夏季粤东外海的海洋状况[J].台湾海峡,2003,22(2):218-228. |
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| 作者姓名： | 许金电 郭小钢 李立 吴日升 靖春生 |
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| 作者单位： | 国家海洋局第三海洋研究所,福建,厦门,361005 |
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| 基金项目： | 国家重点基础研究发展规划项目(G1999043805、G1999043807) |
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| 摘 要： | 本文利用2002年7月22日至8月2日对粤东外海进行的水文观测资料，分析了调查海区的水温、盐度和跃层的分布状况，并对粤东沿岸的上升冷水、海洋锋等海洋现象进行了探讨．结果表明，整个粤东沿岸都存在着下层冷水的涌升现象，该现象在大亚湾外海附近和广东总来外海附近尤为明显，从而导致粤东沿岸水等温线非常密集，产生上升流锋．上升流锋随着深度的增加有向外海扩展的趋势．此外，在台湾浅潍的南部，陆架的坡析处和东沙群岛的东例以及西南部海战似乎也有下层冷水涌升的迹象．东沙群岛的北侧和西部海战有暖水中心存在，该暖水中心可能是离岸的表层水离异一定距离后发生下沉所致．珠江口的东例出现高温低盐水，其低盐水舌向东伸展，可达大亚湾口外海，等盐度线非常密集，是一个非常强的冲淡水羽状锋。
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| 关 键 词： | 2002年 夏季 水温 盐度 跃层 上升流 广东 海洋锋 |
| 文章编号： | 1000-8160(2003)02-0218-11 |
Hydrology features in outer sea of eastern Guangdong in summer 2002 |
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| XU Jin dian,GUO Xiao gang,LI Li,WU Ri sheng,JING Chun sheng.Hydrology features in outer sea of eastern Guangdong in summer 2002[J].Journal of Oceanography In Taiwan Strait,2003,22(2):218-228. |
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| Authors: | XU Jin dian GUO Xiao gang LI Li WU Ri sheng JING Chun sheng |
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| Abstract: | The distribution features of temperature, salinity, thermocline and halocline are analyzed based on the hydrology investigation carried out from July 22 to August 2, 2002 in outer sea of eastern Guangdong. Simultaneously, the upwelling cold water and ocean front, etc. along eastern Guangdong coast are discussed. The results show that the upwelling cold water exists along the eastern Guangdong coast which is much stronger in the areas off Daya Bay and Huilai. High dense isotherms in this area forms the upwelling front. The front expands outwards with the depth. Besides, signs of upwelling cold water appear in the south part of Taiwan Bank, continental shelf break, east and southwest to Dongsha Islands. Two warm centers are found north and west to Dongsha Islands, which maybe come from coastal waters and sink a certain distance away from the coast. Water with high temperature and low salinity exist east to the estuary of Pearl River. Its low salinity tongue spreads eastward and reach in the outer sea of Daya Bay. The high dense isohaline shows a very strong fresh water plume front. |
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| Keywords: | marine hydrology ocean front survey upwelling summer Guangdong |
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