Normal modes of the Mascarene Basin

In this paper the origin of the bi-monthly variability in the Mascarene Basin is reconsidered. Free oscillatory modes of the Mascarene Basin are determined by performing normal mode analysis on the motionless solution in a barotropic shallow-water model with realistic bathymetry. Several modes are i...

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Veröffentlicht in:	Deep-sea research. Part I, Oceanographic research papers Oceanographic research papers, 2008, Vol.55 (1), p.128-136
1. Verfasser:	Weijer, Wilbert
Format:	Artikel
Sprache:	eng
Schlagworte:	Barotropic modes Basins Bathymetry Dynamics of the ocean (upper and deep oceans) Earth, ocean, space Eigenfunctions Exact sciences and technology External geophysics formula omitted Marine Mascarene Basin Oceanic analysis Oceanography Oceans Oscillations Physics of the oceans Shallow-water dynamics South Indian Ocean
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Beschreibung
Zusammenfassung:	In this paper the origin of the bi-monthly variability in the Mascarene Basin is reconsidered. Free oscillatory modes of the Mascarene Basin are determined by performing normal mode analysis on the motionless solution in a barotropic shallow-water model with realistic bathymetry. Several modes are identified with monthly to bi-monthly time scales. The mode that agrees best with recent current meter observations can be interpreted as a barotropic Rossby basin mode, confined to the tilted geometry of the Mascarene Basin.
ISSN:	0967-0637 1879-0119
DOI:	10.1016/j.dsr.2007.10.005