• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Physical Oceanography >The Loop Current: Observations of Deep Eddies and Topographic Waves
【24h】

The Loop Current: Observations of Deep Eddies and Topographic Waves

机译：环电流：深度漩涡和地形波的观察

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

A set of float trajectories, deployed at 1500- and 2500-m depths throughout the deep Gulf of Mexico from 2011 to 2015, are analyzed for mesoscale processes under the Loop Current (LC). In the eastern basin, December 2012-June 2014 had 40 floats per month, which was of sufficient density to allow capturing detailed flow patterns of deep eddies and topographic Rossby waves (TRWs), while two LC eddies formed and separated. A northward advance of the LC front compresses the lower water column and generates an anticyclone. For an extended LC, baroclinic instability eddies (of both signs) develop under the southward-propagating large-scale meanders of the upper-layer jet, resulting in a transfer of eddy kinetic energy (EKE) to the lower layer. The increase in lower-layer EKE occurs only over a few months during meander activity and LC eddy detachment events, a relatively short interval compared with the LC intrusion cycle. Deep EKE of these eddies is dispersed to the west and northwest through radiating TRWs, of which examples were found to the west of the LC. Because of this radiation of EKE, the lower layer of the eastern basin becomes relatively quiescent, particularly in the northeastern basin, when the LC is retracted and a LC eddy has departed. A mean west-to-east, anticyclone-cyclone dipole flow under a mean LC was directly comparable to similar results from a previous moored LC array and also showed connections to an anticlockwise boundary current in the southeastern basin.
机译：从2011年到2015年的整个墨西哥深海湾的1500岁和2500米深度部署了一套浮法轨迹，分析了环电流（LC）下的Messcale进程。在东部盆地，2012年12月 - 2014年6月，每月40个浮子，这是足够的密度，以允许捕获深漩涡的详细流动模式和地形rossby波（TRWS），而两个LC漩涡形成和分开。 LC前部的向北进展压缩下水柱并产生反周气旋。对于扩展的LC，曲中不稳定性EDDIES（两个迹象）在上层射流的南方传播大规模蜿蜒下发生，导致涡流能量（EKE）转移到下层。与LC入侵周期相比，下层EKE的增加仅在几个月内发生了相对较短的间隔。这些eddies的深度eke通过辐射的trws分散到西部和西北部，其中在LC西部发现了一个例子。由于这种辐射的EKE，当LC缩回时，东部盆地的下层变得相对静态，特别是在东北盆地中，并且LC涡流离开。一个平均西向东，平均LC下的反气旋 - 旋风偶极流量与先前系泊LC阵列的类似结果直接相当，并且还显示出东南部盆地的逆时针界限电流的连接。

著录项

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