Title
Shelf waves with diurnal tidal frequency at the Greenland shelf edge
Author
Lam, F.P.A.
TNO Fysisch en Elektronisch Laboratorium
Publication year
1999
Abstract
Tidal analysis was carried out on current measurements at a 'cross-shelf' transect off Greenland at 71°N. The diurnal tides manifest themselves mainly as a barotropic continental shelf wave, travelling southward along the shelf slope. This follows from the amplitude distribution of the diurnal tidal components and from the rotation sense of the tidal ellipses at different cross-slope locations, as calculated with simple two-dimensional models. The well organized cross-slope pattern of the velocity amplitudes is absent in observations further north near 75°N. These observations suggest that the local vanishing of the group velocity, which is caused by topography, is of importance for the existence and local amplification of these continental shelf waves with diurnal tidal frequency.
Subject
Physics
Amplitude
Continental shelf
Shelf wave
Tide
Greenland Sea
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DOI
https://doi.org/10.1016/s0967-0637(98)00090-9
TNO identifier
235018
Source
Deep-Sea Research Part I: Oceanographic Research Papers, 46 (5), 895-923
Document type
article