The Dependence of Water Exchanges between the Kuroshio Water and Its Surroundings on the Characteristics of the Kuroshio's Meanders  

作　　者：姜华 吴德星 万修全 

机构地区：[1]Institute of Physical Oceanography, Laboratory of Physical Oceanography, Ocean University of China

出　　处：《Chinese Journal of Oceanology and Limnology》2003年第4期335-344,共10页中国海洋湖沼学报（英文版）

基　　金：SupportedbyMinistryofEducation (GrantNo.990 75 )

摘　　要：Observation of fluid parcel pathways in the Kuroshio Stream revealed a striking cross stream pattern associated with the Kuroshio’s meanders. In order to understand the observed pattern, a two dimensional kinematic model of a meandering jet was developed which could be used to examine the relationship between streamfunction patterns and fluid parcel trajectories. The experiments designed to investigate the dependence of the water exchanges between the Kuroshio water and its surroundings on the characteristics of the Kuroshio’s meanders involved the downstream speed, phase speed and the amplitude of other propagating waves. The results suggested that fluid parcels could cross the meandering jet to and fro; and that the water exchanges between the Kuroshio and its surroundings increased with a) increasing meander amplitude, b) decreasing downstream speed, and c) increasing wave phase speed. The results also showed that when the meandering jet was disturbed by other propagating waves, more effective water exchanges could be induced.Observation of fluid parcel pathways in the Kuroshio Stream revealed a striking cross stream pattern associated with the Kuroshio's meanders. In order to understand the observed pattern, a two dimensional kinematic model of a meandering jet was developed which could be used to examine the relationship between streamfunction patterns and fluid parcel trajectories. The experiments designed to investigate the dependence of the water exchanges between the Kuroshio water and its surroundings on the characteristics of the Kuroshio's meanders involved the downstream speed, phase speed and the amplitude of other propagating waves. The results suggested that fluid parcels could cross the meandering jet to and fro; and that the water exchanges between the Kuroshio and its surroundings increased with a) increasing meander amplitude, b) decreasing downstream speed, and c) increasing wave phase speed. The results also showed that when the meandering jet was disturbed by other propagating waves, more effective water exchanges could be induced.

关 键 词：KUROSHIO meandering jet water exchange 

分 类 号：P731.21[天文地球—海洋科学]