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首页> 外文期刊>Current Science: A Fortnightly Journal of Research >Recent trends in wind-wave climate for the Indian Ocean
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Recent trends in wind-wave climate for the Indian Ocean

机译：印度洋风浪气候的最新趋势

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摘要

Surface gravity waves play an important role in ocean engineering studies and their influence on the dynamics of the coastal zone is critical. Proper knowledge on wind-wave climatology is an area of immense interest to engineers and climate modellers. Climate change has influenced weather patterns over global oceans and at present is a matter of serious concern, as it can have long-term repercussions. There is a need to understand the recent trends in variability of wind-waves for planning operations. To improve climate projections the Intergovernmental Panel on Climate Change report highlights the need and importance for wind-wave climate study. With this motivation, we study the variability of recent trends in maximum wind speed (MWS) and maximum significant wave height (MSWH) exclusively based on altimeter data for the Indian Ocean basin. We use daily data of MWS and MSWH from eight satellite missions covering a period of 21 years (1992-2012). The findings indicate that regions in the Southern Ocean (between 45 degrees S and 55 degrees S) experienced the largest variability in wind-wave climate. Higher MSWH resulting from increased MWS has practical implications on swell generation field that eventually cross the hemisphere influencing wind-waves elsewhere. The study also reveals the impact of wind-wave activity for the Indian Ocean basin in the past decade.
机译：地心引力波在海洋工程研究中起着重要作用，它们对海岸带动力学的影响至关重要。对风波气候学的正确了解是工程师和气候建模人员极为感兴趣的领域。气候变化已经影响了全球海洋的气候模式，目前引起人们的严重关注，因为气候变化可能会产生长期影响。有必要了解用于计划操作的风波变化的最新趋势。为了改善气候预测，政府间气候变化专门委员会报告强调了对风浪气候研究的必要性和重要性。以此动机，我们仅基于印度洋盆地的高度计数据研究最大风速（MWS）和最大有效波高（MSWH）近期趋势的变化。我们使用来自八个卫星任务的MWS和MSWH的每日数据，涵盖21年（1992-2012年）。调查结果表明，南大洋地区（南纬45度到55度之间）的风浪气候变化最大。由MWS增加引起的更高的MSWH对最终跨越半球影响其他地方的风波的涌浪产生场具有实际意义。该研究还揭示了过去十年中风浪活动对印度洋海盆的影响。

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