热带海洋学报 ›› 2011, Vol. 30 ›› Issue (5): 55-61.doi: 10.11978/j.issn.1009-5470.2011.05.055cstr: 32234.14.j.issn.1009-5470.2011.05.055

• 海洋水文学 • 上一篇    下一篇

东海黑潮表层盐度分布特征及其影响因素*

任惠茹, 康建成, 李卫江, 安琰, 张建平, 王甜甜   

  1. 上海师范大学城市生态与环境研究中心 , 上海 200234
  • 收稿日期:2011-11-01 修回日期:2011-11-01 出版日期:2011-11-01 发布日期:2011-11-01
  • 作者简介:任惠茹 (1983 — ), 女 , 河北省石家庄市 , 硕士研究生 , 主要从事海洋水文气候环境研究。
  • 基金资助:
    上海市科委攻关项目 (062412049); 上海市教委重点项目 (08ZZ69); 上海市教委重点学科建设项目 (J50402)

Surface salinity distribution of the Kuroshio in the East China Sea and its influencing factors

REN Hui-ru, KANG Jian-cheng, LI Wei-jiang, AN Yan, ZHANG Jian-ping, WANG Tian-tian   

  1. Urban Ecology and Environment Research Center , Shanghai Normal University , Shanghai 200234, China
  • Received:2011-11-01 Revised:2011-11-01 Online:2011-11-01 Published:2011-11-01
  • Contact: 康建成

摘要: 利用美国国家海洋大气管理局2007年发布的全球海域温、盐数据库资料, 美国地球物理数据中心2006年发布的海底地形数据库资料以及日本海洋科学与技术机构2003年发布的1997—2002年东海地区月平均降水量资料, 研究东海黑潮表层盐度的月季分布特征, 并分析其影响因素。结果表明, 东海黑潮表层盐度存在明显的月季变化特征。总体而言, 12月至次年3月表层盐度高, 6—9月表层盐度低, 4、5月和10、11月为过渡阶段; 表层盐度高值分布在东海黑潮主段靠近东边界一侧; 6—9月入口段的表层盐度高于出口段的表层盐度, 其他月份入口段的表层盐度低于出口段的表层盐度。东海黑潮表层盐度主要受表层温度、降水、径流的影响。冬、春、秋季的表层盐度分布在黑潮主段靠近陆架一侧区域受表层温度影响大; 降水对东海黑潮表层盐度产生局部小范围的影响, 时间主要集中在1月和6—8月份, 区域分布在低纬25°N以南和30°N附近。长江冲淡水夏季对东海黑潮表层盐度的影响大于其他季节对东海黑潮表层盐度的影响, 7月长江径流量达到最大值时, 对应的黑潮扇形区的盐度最低。

关键词: 东海黑潮, 盐度, 温度, 降水, 长江冲淡水

Abstract: Using the World Ocean Atlas 2005 by the National Oceanic and Atmospheric (NOAA) published in 2007, topography database in 2006 by the National Geophysical Data Center (NGDC), and the grid precipitation data of the Asian region by the Japan Agency for Marine-Earth Science and Technology ( JAMSTEC) published in 2003, the authors explore three-dimensional techniques for oceanic data analysis and figures manifestation with Matlab computer programs. They find that the surface salinity distribution of the Kuroshio in the East China Sea (ECS) varies monthly. First, the salinity at surface is higher in December through March, and is lower in June to September; the salinity in the rest of year is in between. Second, the salinity is the highest near the east side of the Kuroshio in the East China Sea where is closer to Ryukyu Island . The salinity at surface is affected by surface temperature, rain, and Changjiang diluted water. The salinity at surface of the Kuroshio in the East China Sea is mainly influenced by surface temperature near the shelf of contentious in November to February. Surface salinity is impacted by precipitation at small-scale in January and summer, which is in areas south of 25癗 and also near 30癗 where the ECS-Kuroshio flows into the Tokara Strait. Summer runoff of Changjiang diluted water affects most to the surface salinity of the Kushiro in a fan-shaped zone, resulting the maximum runoff in July and the corresponding minimum salinity on surface of the Kuroshio in the fan-shaped zone in the East China Sea .

Key words: Kuroshio in the East China Sea , salinity, temperature, precipitation, Changjiang diluted water

中图分类号: 

  • P731.1