TY - JOUR
T1 - Baroclinic tides at a North-West European margin
T2 - Analytical modelling compared to in situ data
AU - Guizien, K
AU - Inall, M
AU - Barthelemy, E
AU - Sherwin, T
PY - 1999/6
Y1 - 1999/6
N2 - In this paper, we present an analytical modelling of internal tide generation at steep continental margins. By extending the model devised by Rattray (1960), a simple model accounting for the stratification of the ocean (2-layer), the earth's rotation, free surface boundary conditions, radiation condition at the coast and the oblicity of the incident barotropic Poincare wave with respect to the shelf-break (modelled by a step) is derived. This model predicts that waves propagate along horizontal rays, which are refracted by bottom variations: basically, Snell laws are retrieved. Under the assumption of small density ratio and thin upper layer, amplitudes of both transmitted and reflected, baroclinic and barotropic waves are solution of a simplified linear system presented here. The present model is compared with in situ data measured at the Malin Shelf shelf-edge during a UK NERC LOIS/SES cruise in 1996.
AB - In this paper, we present an analytical modelling of internal tide generation at steep continental margins. By extending the model devised by Rattray (1960), a simple model accounting for the stratification of the ocean (2-layer), the earth's rotation, free surface boundary conditions, radiation condition at the coast and the oblicity of the incident barotropic Poincare wave with respect to the shelf-break (modelled by a step) is derived. This model predicts that waves propagate along horizontal rays, which are refracted by bottom variations: basically, Snell laws are retrieved. Under the assumption of small density ratio and thin upper layer, amplitudes of both transmitted and reflected, baroclinic and barotropic waves are solution of a simplified linear system presented here. The present model is compared with in situ data measured at the Malin Shelf shelf-edge during a UK NERC LOIS/SES cruise in 1996.
KW - internal tide
KW - analytical modelling
KW - Malin Shelf
UR - http://www.scopus.com/inward/record.url?scp=0032679549&partnerID=8YFLogxK
M3 - Article
VL - 3
SP - 181
EP - 186
JO - Proceedings of the International Offshore and Polar Engineering Conference (ISOPE)
JF - Proceedings of the International Offshore and Polar Engineering Conference (ISOPE)
ER -