Multiple equilibrium states of the Gulf of Mexico Loop Current |
| |
Authors: | Sheremet Vitalii A. Khan Arham Amin Kuehl Joseph |
| |
Affiliation: | 1.Department of Physical Oceanography, Woods Hole Oceanographic Institution, MS#21, Woods Hole, 02543, MA, USA ;2.Department of Mechanical Engineering, University of Delaware, 130 Academy Street, Newark, 19716, DE, USA ; |
| |
Abstract: | It has been established that idealized western boundary currents, which encounter a gap in their supporting boundary, will assume one of two dominant steady states: a loop current state and a gap leaping state, and that transitions between these states display hysteresis. However, a question of whether the idealized geometries considered to date apply to the Gulf of Mexico Loop Current (LC) remained. Here, the nonlinear potential vorticity advection-diffusions equations are solved, for Gulf of Mexico topography, using Newton’s method. We demonstrate that, in application to the LC in the Gulf of Mexico, the original conclusions do hold and additionally describe peculiarities of the more realistic steady states. The existence of our numerically calculated steady LC states in the actual Gulf of Mexico are supported through analysis of historical sea surface height data, and implications of our results for LC modeling and forecasting are discussed. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|