...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Physical Oceanography >Vertical Structure of Kelvin Waves in the Indonesian Throughflow Exit Passages
【24h】

Vertical Structure of Kelvin Waves in the Indonesian Throughflow Exit Passages

机译：印尼通流出口通道中开尔文波的垂直结构

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The subsurface structure of intraseasonal Kelvin waves in two Indonesian Throughflow (ITF) exit passages is observed and characterized using velocity and temperature data from the 2004-06 International Nusantara Stratification and Transport (INSTANT) project. Scatterometer winds are used to characterize forcing, and altimetric sea level anomaly (SLA) data are used to trace the pathways of Kelvin waves east from their generation region in the equatorial Indian Ocean to Sumatra, south along the Indonesian coast, and into the ITF region.rnDuring the 3-yr INSTANT period, 40 intraseasonal Kelvin waves forced by winds over the central equatorial Indian Ocean caused strong transport anomalies in the ITF outflow passages. Of these events, 21 are classed as "downwelling" Kelvin waves, forced by westerly winds and linked to depressions in the thermocline and warm temperature anomalies in the ITF outflow passages; 19 were "upwelling" Kelvin waves, generated by easterly wind events and linked to shoaling of the thermocline and cool temperature anomalies in the ITF. Both downwelling and upwelling Kelvin waves have similar vertical structures in the ITF outflow passages, with strong transport anomalies over all depths and a distinctive upward tilt to the phase that indicates downward energy propagation. A linear wind-forced model shows that the first two baroclinic modes account for most of the intraseasonal variance in the ITF outflow passages associated with Kelvin waves and highlights the importance of winds both in the eastern equatorial Indian Ocean and along the coast of Sumatra and Java for exciting Kelvin waves.rnUsing SLA as a proxy for Kelvin wave energy shows that 37% ± 9% of the incoming Kelvin wave energy from the Indian Ocean bypasses the gap in the coastal waveguide at Lombok Strait and continues eastward. Of the energy that continues eastward downstream of Lombok Strait, the Kelvin waves are split by Sumba Island, with roughly equal energy going north and south to enter the Savu Sea.
机译：使用来自2004-06国际Nusantara分层和运输（INSTANT）项目的速度和温度数据，观察并表征了两个印尼通水（ITF）出口通道中的季节内开尔文波的地下结构。散射仪的风用于表征强迫，高空海平面异常（SLA）数据用于追踪开尔文波从赤道印度洋的生成区域向东到苏门答腊，印度尼西亚沿岸的南部以及进入ITF区域的路径。 。在3年的INSTANT期间，赤道中部印度洋上空吹来的40个季节内开尔文波在ITF流出通道中引起了强烈的运输异常。在这些事件中，有21种被归类为“下行”开尔文波，它们是由西风推动的，并与热跃层的凹陷和ITF流出通道中的温度异常有关。 19个是由东风事件产生的“上升”开尔文波，并与ITF中的热跃层和凉爽温度异常有关。上升流和下降流的开尔文波在ITF流出通道中具有相似的垂直结构，在所有深度上都有很强的输运异常，并且相对于相的独特向上倾斜表示能量向下传播。线性风动力模型表明，前两种斜压模式解释了与开尔文波有关的ITF流出通道的大部分季节内变化，并突出了赤道东部印度洋以及苏门答腊和爪哇沿海的风的重要性使用SLA作为开尔文波能的代理，表明印度洋输入的开尔文波能的37％±9％绕过了龙目岛海峡沿岸波导的缝隙并向东延伸。在龙目岛海峡下游继续向东延伸的能量中，开尔文波被萨姆巴岛分裂，南北的能量大致相等，进入萨武海。

著录项

  • 来源
    《Journal of Physical Oceanography》 |2010年第9期|P.1965-1987|共23页
  • 作者

    Kyla Drushka; Janet Sprintall; Sarah T. Gille; Irsan Brodjonegoro;

  • 作者单位

    Scripps Institution of Oceanography, 9500 Gilman Dr., La Jolla, CA 92109-0230;

    rnScripps Institution of Oceanography, La Jolla, California;

    rnScripps Institution of Oceanography, La Jolla, California;

    rnBandung Institute of Technology, Bandung, Indonesia;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
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