Dynamics and energetics of tides in the Laptev Sea: the results of high-resolving modeling of the surface semidiurnal tide M2
https://doi.org/10.7868/S2073667320010025
Abstract
The results of high-resolving modeling for the surface semidiurnal tide M2 in the Laptev Sea have been discussed. They are obtained using a high-resolving version of 3D finite-element hydrostatic model QUODDY-4. It is established that the field of isoamplitudes and isophases of tidal elevations closely resembles that incidents to the interference of counter-coming Poincare waves in the southern part of the Sea and similar Kelvin waves in the eastern one. The above field contains 3 real left-rotating amphidromes placed in the first of them and 2 in the second one. The model amplitudes and phases of tidal elevations, maximum and minimum barotropic tidal velocitites, and the direction of rotation of the barotropic tidal velocity are in reasonably good agreement with the available data of in situ measurements. The modeling results are also used to determine the averaged (over a tidal cycle) density of barotropic tidal energy, the advective transport of kinetic barotropic tidal energy, the barotropic horizontal wave flux of potential tidal energy, and the dissipation rate of barotropic tidal energy in the Sea. An estimate for the dissipation time is found. Its comparison with the existing estimate for the World Ocean as a whole shows that the Laptev Sea is one of significant sinks of barotropic tidal energy in the World Ocean.
About the Authors
B. A. Kagan
Shirshov Institute of Oceanology, Russian Academy of Sciences
Russian Federation
Russian Federation
Moscow
A. A. Timofeev
Shirshov Institute of Oceanology, Russian Academy of Sciences
Russian Federation
Russian Federation
Moscow
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Review
For citations:
Kagan B.A., Timofeev A.A. Dynamics and energetics of tides in the Laptev Sea: the results of high-resolving modeling of the surface semidiurnal tide M2. Fundamental and Applied Hydrophysics. 2020;13(1):15-23. (In Russ.) https://doi.org/10.7868/S2073667320010025
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