北太平洋海浪场和风场特征分析

发布时间：2019-05-06 06:32

【摘要】：利用欧洲中尺度天气预报中心(ECMWF——European Centre for Medium-Range Weather Forecasts)的1979年1月2014年12月逐6 h的ERA-Interim有效波高和10 m风场资料,分析了近36年期间北太平洋海域海浪场和风场的变化特征。结果表明:1)中低纬度的西北太平洋波高有逐年线性递增趋势,大约在0.2~0.6 cm/a,而低纬度的太平洋东北部海域则以-0.4~-0.2 cm/a的趋势减小。2)风速线性变化趋势显著的区域主要集中在太平洋东北部低纬度海域,约以1.0~2.0 cm/(s·a)的速度在增加。而日本岛四周、菲律宾半岛以南等海域大都以-1.0~-0.5 cm/(s·a)的速度减小。3)北太平洋海域波高和风速都具有明显的季节变化特征,两者具有很强的相关性。西风带内有一个个波高超过10 m的风暴圈,其波高受风浪和涌浪的双重作用。这可为航海、海洋工程设计、军事及海洋能开发与利用等方面提供科学依据。
[Abstract]:Using the ERA-Interim effective wave height and 10 m wind field data from the European Centre for Mesoscale Weather Forecast (ECMWF--European Centre for Medium-Range Weather Forecasts), January 1979, December 2014, 6 h), The variation characteristics of sea wave field and wind field in the North Pacific during the last 36 years are analyzed. The results show that: 1) there is a linear increasing trend of wave height in the Northwest Pacific at low and middle latitudes, which is about 0.2 脳 0.6 cm/a,. The low latitudes of the northeast Pacific decreased with a trend of-0.4 cm/a. 2) the areas with significant linear variation of wind speed mainly concentrated in the low latitudes of the northeast Pacific Ocean. It was increased at the rate of 1.0 脳 2.0 cm/ (s 路a). On the other hand, the speed of-1.0 ~ 0.5 cm/ (s 路a) decreases in most of the waters south of the Philippine Peninsula around Japan Island. 3) the wave height and wind speed in the North Pacific Ocean have obvious seasonal variation characteristics. There is a strong correlation between the two. There is a storm ring with a wave height of more than 10 m in the westerly zone, and its wave height is affected by both the wind and the surge. This can provide scientific basis for navigation, marine engineering design, military and marine energy development and utilization.
【作者单位】：河海大学港口海岸与近海工程学院;
【基金】：中央高校基本科研业务费专项资金资助(2016B10414,2016B20814,2015B26414)
【分类号】：P732;P731.2

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