| 苏北浅滩外侧浅水锋的观测与分析 |
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| 引用本文： | 赵保仁,涂登志,毕亚文.苏北浅滩外侧浅水锋的观测与分析[J].海洋科学集刊,1993(34):51-60. |
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| 作者姓名： | 赵保仁 涂登志 毕亚文 |
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| 作者单位： | 中国科学院海洋研究所 |
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| 基金项目： | 中国科学院海洋研究所调查研究报告第2144号 |
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| 摘 要： | 关于黄海的潮混合和浅水锋现象,中国和韩国的学者已有一些报道(赵保仁,1987a，b;赵保仁等,1992;Lie,H-J.，1989)。卫星图片和有关水文观测资料表明,夏季,黄海的浅水锋主要分布在苏北浅滩外侧、山东半岛的成山角一石岛近海、渤海海峡、西朝鲜湾和江华湾湾口附近及朝鲜半岛西南部近海。
为了深入了解黄海苏北浅滩外侧浅水锋的分布和水文结构,我们于1990年7月29日至8月1日对该区域进行了一次水文和水化学的专项调査。本文根据这次调查所得的水文资料,对苏北浅滩外侧的海面冷水和浅水锋的分布特征以及锋区的环流结构进行简要论述。
苏北近海的浅水锋常出现在苏北浅滩外侧的陡坡附近(赵保仁,1987a)。本次调查在这一区域设了5个断面,32个大面站和1个连续站。锋区附近的最小站距约4海里(5′经距)左右。调査区域的水深分布和站位如图1所示。这一海区的地形分布特点是海底坡度较大,34°10′N以北海底陡坡在30-40m等深线之间,34°10′N线以南海底陡坡在20-30m等深线之间,陡坡处坡度达4×10-3左右。此外,在122°10''E线附近,还有一向北伸展的沙脊。观测结果表明,苏北浅滩外侧浅水锋现象与地形特征关系密切。
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| 关 键 词： | 苏北浅滩、浅水锋 |
| 收稿时间： | 1991/11/29 0:00:00 |
OBSERVATIONS AND ANALYSES OF THE SHALLOW WATER FRONT IN THE OUTSIDE OF THE SUBEI SHOAL |
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| Zhao Baoren,Tu Dengzhi,Bi Tawen.OBSERVATIONS AND ANALYSES OF THE SHALLOW WATER FRONT IN THE OUTSIDE OF THE SUBEI SHOAL[J].Studia Marina Sinica,1993(34):51-60. |
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| Authors: | Zhao Baoren Tu Dengzhi Bi Tawen |
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| Institution: | Institute of Oceanology, Academia Sinica |
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| Abstract: | This paper reports the main results of oceanographic investigations of the shallow water front area outside the Subei (Northern Jiangsu Province)Shoal. The observations showed that the surface cold water and the shallow water front were restricted by an underwater sand ridge stretching northward. Comparison of the geostrophic current with the measured currerent showed that the dynamic height could be used to describe the scheme of water. movement in this area. A strong current in the upper layer near the front, the upwelling in the left shallow water area of the front, and the downwelling in its right deeper water area were all identified by the current data and the distributions of temperature and salinity. Notable variations of distributions of the surface cold water and the front were also found according to measured temperature data and remote sensing data from satellite. |
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