...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Physical Oceanography >Loop Current Cycle: Coupled Response of the Loop Current with Deep Flows
【24h】

Loop Current Cycle: Coupled Response of the Loop Current with Deep Flows

机译：回路电流周期：回路电流与深流的耦合响应

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

Although the upper-layer dynamics of the Loop Current and eddies in the Gulf of Mexico are well studied, the understanding of how they are coupled to the deep flows is limited. In this work, results from a numerical model are analyzed to classify the expansion, shedding, retraction, and deep-coupling cycle (the Loop Current cycle) according to the vertical mass flux across the base of the Loop. Stage A is the "Loop reforming" period, with downward flux and deep divergence under the Loop Current. Stage B is the "incipient shedding," with strong upward flux and deep convergence. Stage C is the "eddy migration," with waning upward flux and deep throughflow from the western Gulf into the Yucatan Channel. Because of the strong deep coupling between the eastern and western Gulf, the Loop's expansion is poorly correlated with deep flows through the Yucatan Channel. Stage A is longest and the mean vertical flux under the Loop Current is downward. Therefore, because the net circulation around the abyssal basin is zero, the abyssal gyre in the western Gulf is cyclonic. The gyre's strength is strongest when the Loop Current is reforming and weakest after an eddy is shed. The result suggests that the Loop Current cycle can force a low-frequency [time scales ~ shedding periods; O(months)] abyssal oscillation in the Gulf of Mexico.
机译：尽管已经对墨西哥湾中环流和涡流的上层动力学进行了深入研究，但对它们如何与深流耦合的理解仍然有限。在这项工作中，将对数值模型的结果进行分析，以根据整个环路底部的垂直质量通量对扩展，脱落，回缩和深耦合周期（环路电流周期）进行分类。 A阶段是“环路重整”阶段，在环路电流下具有向下的通量和深的发散。 B阶段是“初期脱落”，具有强烈的向上通量和深度收敛。 C期是“涡流迁移”，从西海湾到尤卡坦海峡的上升通量和深水通量逐渐减弱。由于东部和西部海湾之间有很强的深层耦合，因此，卢普区的扩张与通过尤卡坦海峡的深层流量关系不大。 A级是最长的，环路电流下的平均垂直通量是向下的。因此，由于深海盆地周围的净环流为零，因此西海湾的深海回旋是气旋的。当回路电流变化时，回旋的强度最大，而涡流消除后，回旋的强度最弱。结果表明，环路电流周期可以强制执行低频[时间尺度〜脱落周期； O（月）]在墨西哥湾的深渊振荡。

著录项

  • 来源
    《Journal of Physical Oceanography》 |2011年第3期|p.458-471|共14页
  • 作者

    Y.-L. Chang; L.-Y. Oey;

  • 作者单位

    Princeton University, Princeton, New Jersey, and National Taiwan Normal University, Taipei, Taiwan;

    Princeton University, Princeton, New Jersey;

  • 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