Bokhove, O and Ambati, VR (2009) Hybrid Rossby-shelf modes in a laboratory ocean. Journal of Physical Oceanography, 39 (10). 2523 - 2542. ISSN 0022-3670
Abstract
Idealized laboratory experiments reveal the existence of forced–dissipative hybrid Rossby-shelf modes. The laboratory ocean consists of a deeper ocean (accommodating basin-scale Rossby modes) and a coastal step shelf (accommodating trapped shelf modes). Planetary Rossby modes are mimicked in the laboratory via a uniform topographic slope in the north–south direction. Hybrid modes are found as linear modes in numerical calculations, and similar streamfunction patterns exist in streak photography of the rotating tank experiments. These numerical calculations are based on depth-averaged potential vorticity dynamics with Ekman forcing and damping. Preliminary nonlinear calculations explore the deficiencies observed between reality and the linear solutions. The aim of the work is twofold: to show that idealized hybrid Rossby-shelf modes exist in laboratory experiments and to contribute in a general sense to the discussion on the coupling and energy exchange associated with hybrid modes between shallow coastal seas and deep-ocean basins.
Metadata
Item Type: | Article |
---|---|
Authors/Creators: |
|
Keywords: | Discontinuous Galerkin finite element simulations; rotating tank laboratory experiments; ocean Rossby-shelf modes; validation; Rossby waves; potential vorticity; forcing; ocean circulation |
Dates: |
|
Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Mathematics (Leeds) > Applied Mathematics (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 16 Feb 2015 12:06 |
Last Modified: | 25 Apr 2015 05:20 |
Published Version: | http://dx.doi.org/10.1175/2009JPO4101.1 |
Status: | Published |
Publisher: | American Meteorological Society |
Identification Number: | 10.1175/2009JPO4101.1 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:83390 |