Chaotic Advection of the Shallow Kuroshio Coastal Waters |
| |
| Authors: | Takuji Waseda Humio Mitsudera |
| |
| Institution: | (1) Frontier Research System for Global Change and International Pacific Research Center, University of Hawaii, Honolulu, HI, 96822, U.S.A |
| |
| Abstract: | The shallow coastal water of the Enshu-Nada Sea (ENSW) recirculates regardless of whether the Kuroshio path is straight or
has meanders. The recirculation is formed as a result of flow separation at the sharp coastline. The outputs of a recent numerical
simulation of the Kuroshio current, including case of a short-term meander caused by an anticyclonic eddy, were analysed to
track the motion of the ENSW. In contrast to the steady-flow cases, the unsteady cases showed that the ENSW discharges into
the Kuroshio Extension region and intrudes further north into the Kuroshio-Oyashio confluence region due to chaotic advection.
Two hyperbolic stagnation points of the velocity field characterise the transport paths; one south of the Izu peninsula and
the other at the Kuroshio Extension. This mechanism exists even without the Ekman drift and may play an important role in
the transportation of the fish eggs and larvae from the southern Japan spawning ground to the food abundant Kuroshio-Oyashio
transition zone.
This revised version was published online in August 2006 with corrections to the Cover Date. |
| |
| Keywords: | Kuroshio chaotic transport Enshu-nada |
| 本文献已被 SpringerLink 等数据库收录！ |
|
