南大西洋风场和海浪场时空特征分析  

AN ANALYSIS OF THE ANNUAL VARIATION OF WIND FIELD AND SEA WAVE FIELD IN THE SOUTH ATLANTIC OCEAN

作　　者：刘金芳[1] 黄海仁[1] 张晓慧[2] 唐晓卫[1] 任帅[1] 

机构地区：[1]海军海洋水文气象中心 [2]北海舰队海洋水文气象中心

出　　处：《海洋湖沼通报》2002年第3期1-8,共8页Transactions of Oceanology and Limnology

摘　　要：本文根据1950～1995年共46a的南大西洋船舶气象报资料,按1*1和5*5网格统计的风、浪要素进行分析研究。通过分析每月风、浪各要素的等值线分布图,得出南大西洋风场与海浪场季节变化特点不如北半球各大洋显著,但仍有较明显的季节变化,只是季节性差异较小,冬季风比夏季风强盛,相应的平均波高、大浪大涌频率也较大;盛行风向、风浪传播方向、涌浪传播方向基本一致,低纬地区常年盛行东南浪,高纬地区则盛行偏西向浪。本文为船舶远洋交通运输、远洋出访和科学试验等活动,提供了较为翔实的风场和浪场资料及变化规律。Based on the ship meteorological data with grids of 1*1 and 5*5 in the South Atlantic Ocean during 1950～1995, and based on the analysis of the distribution of isopleths for the monthly wind and wave elements, it is found that the seasonal changes of the winds and waves are not as significant as those in the northern hemisphere. Yet they still exist, and are quite remarkable. The wind in winter is stronger than that in summer, and the corresponding average wave height is higher, and the frequencies of high sea and average heavy swell are also higher. The directions of wind, wind wave and swell are roughly consistent. Waves in the southeast direction prevail in lower latitude zones, while partial west waves prevail in higher latitude zones all year round. The paper provides valuable information in terms of wind and wave fields and their variations for ocean-going transportation and scientific experiments in the South Atlantic Ocean.

关 键 词：大西洋 风场 风浪场 涌浪场 季节变化 环流形势 

分 类 号：P731.22[天文地球—海洋科学]