| 东海北部陆架区温、盐度逆转现象的分析 |
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| 引用本文： | 蓝淑芳.东海北部陆架区温、盐度逆转现象的分析[J].海洋科学集刊,1997(38):17-30. |
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| 作者姓名： | 蓝淑芳 |
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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2822号
本课题为国家自然科学基金资助项目，49176254号 |
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| 摘 要： | 东海陆架区的温、盐度逆转现象,有关研究已作了一些论述(苏育嵩等,1989;蓝淑芳等,1984; Nakao,1977),指出东海陆架区存在两个温、盐度逆转结构出现频率高的海区：一个位于江苏、浙江近海的狭长海区内;另一个位于东海北部济州岛西南海区,即东海北部底层冷水及其附近海域(蓝淑芳等,1993)。翁学传(1984)、曹欣中等(1982)利用常规调查资料,曾分别对第一高频区的中层冷水和温度逆转现象作了初步分析;丁宗信(1994，1995)利用常规调査资料和CTD资料,对黄海、东海春、夏、秋、冬四季温、盐度垂直分布类型及逆转现象的成因进行了研究。本文根据中国科学院海洋研究所1984年和1985年6月在东海北部陆架区进行的大面水文调査资料(该资料由“科学一号”调査船使用Mark-Ⅲ CTD 探测仪获取),以及国家海洋局1975-1980年在东海取得的标准断面BT观测资料,对东海北部陆架区,特别是上述第二高频区的温、盐度逆转现象和成因作进一步研究。
由于该海区的温、盐度逆转现象与水团的配置及交汇密切相关,所以首先讨论该海区的水团。
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| 关 键 词： | 东海陆架，温、盐度逆转现象 |
| 收稿时间： | 1995/12/28 0:00:00 |
STUDY ON TEMPERATURE AND SALINITY INVERSION IN THE NORTHERN EAST CHINA SEA SHELF |
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| Lan Shufang.STUDY ON TEMPERATURE AND SALINITY INVERSION IN THE NORTHERN EAST CHINA SEA SHELF[J].Studia Marina Sinica,1997(38):17-30. |
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| Authors: | Lan Shufang |
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| Institution: | Institute of Oceanology,Chinese Academy of Sciences |
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| Abstract: | On the basis of CTD data obtained in the large-scale hydrologic investigation carried out in the northern East China Sea shelf in June of 1984 and 1985 by the Institute of Oceanology,Chinese Academy of Sciences, BT data obtained during 1975-1980 by the State Oceanic Administration in sectional observation in the East China Sea, inversion phenomena (and its cause of formation )of temperature and salinity in the northern East China Sea shelf and the geographic distribution for every characteristic value of the inversion layer of temperature and salinity were analysed and studied.
The results in question show that the inversion structural fields of temperature and salinity in the northern East China Sea shelf are basically distributed in the vast sea area in the vicinity southwest off Cheju Island, then extends southeast and then turns south. There also exists yearly variations. The temperature inversion layers consist mainly of intermediate cold water; the inversion layers of salinity consist mainly of intermediate low salinity water, intermediate high salinity, and the alternately intermediate low and high salinity waters. The distribution characteristics for every characteristic value of inversion layer clearly showed that the stronger inversion layers in the structural fields are generally thicker. There is often simultaneous occurrence of inversion layers of temperature and salinity. |
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