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Finite amplitude thermal inertial waves in a rotating fluid layer
Recent investigations by Zhang and Roberts (1997) have shown that the onset of convection in a rapidly rotating fluid layer at sufficiently small Prandtl number and heated from below is via modes which are essentially thermal inertial waves. The detailed structure of these modes is determined by balancing buoyancy forces against weak viscous dissipation and the objective here is to extend the results of Zhang and Roberts into a finite amplitude regime. This paper presents the first study of nonlinear thermoinertial waves in a rapidly rotating layer using multiple timescales analysis and double expansion perturbations in terms of small Ekman number and small amplitude. Some solutions of the nonlinear problem are given and the implications of our study for related problems are considered.
History
Publication title
Geophysical and Astrophysical Fluid DynamicsVolume
87Issue
3-4Pagination
193-214ISSN
0309-1929Department/School
School of Natural SciencesPublisher
Taylor & Francis LtdPlace of publication
4 Park Square, Milton Park, Abingdon, England, Oxon, Ox14 4RnRights statement
Copyright 1998 OPA (Overseas Publishers Association) N.V.Repository Status
- Restricted