Open AccessTidally induced residual flows around an island due to both frictional and rotational effects
Author(s) -
Pingree R. D.,
Maddock Linda
Publication year - 1980
Publication title -
geophysical journal of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.302
H-Index - 168
eISSN - 1365-246X
pISSN - 0016-8009
DOI - 10.1111/j.1365-246x.1980.tb02636.x
Subject(s) - geology , eddy , residual , vorticity , rotation (mathematics) , flow (mathematics) , earth's rotation , geodesy , geophysics , mechanics , geometry , vortex , turbulence , physics , mathematics , algorithm
Summary A hydrodynamic numerical model developed in polar coordinates derives the tidal characteristics around an island. Due to the frictional stress over the sloping topography four residual eddies are generated. The effect of the Earth's rotation deflects the tidal flow in the shallow waters near the island and marginally adjusts the residual flows. Relationships for the M 2 tidal vorticity are derived for these effects which can be used to estimate the rectified vorticity distribution associated with tidal flow around islands. The corresponding bottom stress distributions, which are important in sediment transport studies, are briefly discussed.