首页> 外文期刊>海洋学报(英文版) >Analysis of the characteristics of offshore currents in the Changjiang (Yangtze River) estuarine waters based on buoy observations
【24h】

Analysis of the characteristics of offshore currents in the Changjiang (Yangtze River) estuarine waters based on buoy observations

机译:基于浮标观测的长江口水域海流特征分析

获取原文
获取原文并翻译 | 示例
       

摘要

A buoy of 10 m in diameter was used to record the current speed and direction in a vertical profile in the offshore area of the Changjiang (Yangtze River) Estuary (with an average water depth of 46.0 m) for one year. The results include: (1) the currents rotate clockwise and the current direction is consistent in a vertical profile without clear seasonal variations. (2) The horizontal current speeds are generally high, with a maximum of 128.5 cm/s occurring in summer and 105.5 cm/s appearing in winter commonly close to the surface. The average current speeds in the vertical profile fall in the same range (the differences are less than 8.0 cm/s), with the maximum of 47.0 cm/s occurring in summer and 40.8 cm/s in winter. The average current speed during spring tides is twice that during neap tides (26.5 cm/s). (3) Significant differences of speeds are observed in the vertical profile. The maximum current speed occurs at either surface (spring and winter) or sub-surface (summer and autumn), with the minimum current speed appearing at the bottom. The maximum average current speed of all layers is 57.9 cm/s, which occurs in the 18-m layer during summer. (4) The average speed of the residual currents ranges from 7.5 cm/s to 11.3 cm/s, with the strongest occurring in spring and weakest in winter. The residual currents of all layers are eastward during spring and winter, whereas northeastward or northward during summer and autumn. (5) The currents in the offshore of Changjiang Estuary are impacted collectively by diluted Changjiang River discharge, the Taiwan Warm Current, monsoon and tides.
机译:直径为10 m的浮标用于记录长江(长江)河口近海区域(平均水深46.0 m)中垂直方向的当前速度和方向,历时一年。结果包括:(1)电流顺时针旋转,并且电流方向在垂直分布中一致,没有明显的季节性变化。 (2)水平电流速度通常很高,通常在靠近地面的地方,夏季最大速度为128.5 cm / s,冬季最大速度为105.5 cm / s。垂直剖面中的平均电流速度落在相同范围内(差异小于8.0 cm / s),最大速度在夏季为47.0 cm / s,在冬季为40.8 cm / s。春季潮汐的平均电流速度是潮汐潮汐的平均速度(26.5 cm / s)的两倍。 (3)在垂直剖面上观察到明显的速度差异。最大电流速度出现在地面(春季和冬季)或次表面(夏季和秋季),而最小电流速度出现在底部。所有层的最大平均电流速度为57.9 cm / s,在夏季的18 m层中会出现。 (4)剩余电流的平均速度在7.5 cm / s到11.3 cm / s的范围内,春季最大,冬季最弱。在春季和冬季,所有层的剩余流向东,而在夏季和秋季,则向东北或向北。 (5)长江河口近海流量受到稀释的长江流量,台湾暖流,季风和潮汐的共同影响。

著录项

  • 来源
    《海洋学报(英文版)》 |2017年第4期|13-20|共8页
  • 作者单位

    Forecast Center for East China Sea, State Oceanic Administration, Shanghai 200136, China;

    Ministry of Education Key Laboratory for Coast and Island Development, Nanjing University, Nanjing 210093, China;

    Ministry of Education Key Laboratory for Coast and Island Development, Nanjing University, Nanjing 210093, China;

    Marine Environment Investigation Center of East China Sea, State Oceanic Administration, Shanghai 200137, China;

    Forecast Center for East China Sea, State Oceanic Administration, Shanghai 200136, China;

    Forecast Center for East China Sea, State Oceanic Administration, Shanghai 200136, China;

  • 收录信息 中国科学引文数据库(CSCD);中国科技论文与引文数据库(CSTPCD);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

  • 入库时间 2022-08-19 03:57:50
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号