Hysteresis of a periodic or leaking western boundary current flowing by a gap

Xinxin Song; Dongliang Yuan; Zheng Wang

首页> 中文期刊> 《海洋学报：英文版》 >Hysteresis of a periodic or leaking western boundary current flowing by a gap

Hysteresis of a periodic or leaking western boundary current flowing by a gap

开具论文收录证明 >>

期刊封面封底目录下载 >>

文献代查 >>

页面导航

摘要
著录项
相关主题

摘要

A 1.5-layer quasi-geostrophic reduced gravity model is used to study the hysteresis of a periodic or leaking western boundary current(WBC) flowing by a gap. When the periods of the WBC variations are much longer than the Rossby adjustment time scales of the circulation in the vicinity of the gap, the Hopf bifurcations during the Reincrease and Re-decrease loops are delayed to produce a new domain of hysteresis of the Reynolds numbers, and the critical Reynolds numbers of the WBC regime transitions change significantly, with the domain of the hysteresis Reynolds number larger for shorter periodic forcing. When the periods of the WBC variations are comparable to those of the Rossby adjustment time scales of the circulation in the vicinity of the gap, the WBC path inside the gap becomes periodic without hysteresis. The intrusion of the WBC into the western basin generally gets smaller as the period decreases. In addition, the partial leakage of the WBC transport through the gap into the western basin is found to have significant impact on the hysteresis loop of the WBC path when the leaked transport is larger than 1/2 of the WBC. Both the intrusion extent and the critical Reynolds numbers of the WBC regime transition are changed, and the larger the throughflow transport, the larger the change.

著录项

来源
《海洋学报：英文版》 |2019年第4期|90-96|共7页
作者
Xinxin Song; Dongliang Yuan; Zheng Wang;
展开▼
作者单位

Key Laboratory of Ocean Circulation and Waves;

Institute of Oceanology;

Chinese Academy of Sciences;

College of Meteorology and Oceanography;

National University of Defense Technology;

Key Laboratory of Marine Science and Numerical Modeling;

First Institute of Oceanography;

Ministry of Natural Resources;

University of Chinese Academy of Sciences;

Function Laboratory for Ocean Dynamics and Climate;

Pilot National Laboratory for Marine Science and Technology (Qingdao);

展开▼
原文格式 PDF
正文语种 chi
中图分类天文学、地球科学;
关键词
hysteresis; periodic; western; boundary; current; throughflow;

Hysteresis of a periodic or leaking western boundary current flowing by a gap

摘要

著录项

相关主题

期刊订阅