We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
Double Kelvin Waves over the Newfoundland Shelf-break.
- Authors
Wright, Daniel G.; Zhigang Xu
- Abstract
Xu and Loder (2004) present results from a data assimilative model for the diurnal tides over the Grand Banks and the southern Labrador Shelf. Their results include small-scale spatial structures that are not resolved by the data, leaving some question about their validity. The fact that these eddy-like features occur along the shelf-break, upstream of a sudden widening of the slope region, leads us to speculate that they may be double Kelvin waves generated when coastally trapped waves propagating along the shelf encounter the abrupt change in topography. Here, we examine the free wave modes that exist at the diurnal frequency to determine if the allowable modes support this conjecture. We find that the double Kelvin wave does exist at the diurnal frequency and that 85% or more of the variability along a line through the area of interest can be accounted for by a linear combination of the first mode continental shelf wave and the double Kelvin wave. These results suggest that this conjecture is very likely the correct interpretation of the numerical model results. Previous theoretical investigations of double Kelvin waves in a homogeneous fluid are reviewed within a common framework.
- Subjects
LABRADOR (N.L.); GRAND Banks of Newfoundland; OCEAN circulation; OCEANOGRAPHY; CONTINENTAL shelf; MARINE sciences
- Publication
Atmosphere - Ocean (Canadian Meteorological & Oceanographic Society), 2004, Vol 42, Issue 2, p101
- ISSN
0705-5900
- Publication type
Article
- DOI
10.3137/ao.420202