caa a22 4500 445302917 CHVBK 20180317142603.0 cr unu---uuuuu 170323e20100401xx s 000 0 eng 10.1134/S0001433810020106 doi (NATIONALLICENCE)springer-10.1134/S0001433810020106 On diapycnal mixing induced by internal tidal waves in the Arctic Ocean [Elektronische Daten] [B. Kagan, E. Sofina, A. Timofeev] In order to reproduce the diapycnal mixing induced by internal tidal waves (ITWs) in the Arctic Ocean, we use a modified version of the three-dimensional finite-element hydrothermodynamic model QUODDY-4. We found that the average (over the tidal cycle) and integral (by depth) baroclinic tidal energy dissipation rate in individual areas of the Siberian continental shelf and in the straits between the Canadian Arctic archipelago are much higher than in the open ocean and its values on ridges and troughs are qualitatively similar to one another. Moreover, in the area of open-ocean ridges, the baroclinic tidal energy dissipation rate increases as it approaches the bottom, but only in the bottom boundary layer; on the Mid-Atlantic and Hawaii ridges, such an increase is observed within a few hundreds of meters away from the bottom. The average (in area and depth of the open ocean) coefficient of diapycnal mixing defined by the baroclinic tidal energy dissipation rate is higher than the coefficient of molecular kinematic viscosity and only a few times lower than the canonical value of the coefficient of vertical turbulent viscosity, which is used in models of global oceanic circulation. Coupled with the reasoning on the localization of baroclinic tidal energy dissipation, this fact leads to the conclusion that disregarding the contribution that ITW-induced diapycnal mixing makes to the ocean-climate formation is hardly justified. Pleiades Publishing, Ltd., 2010 Kagan B. Shirshov Institute of Oceanology, St. Petersburg Branch, Russian Academy of Sciences, Vasil'evskii ostrov, Pervaya liniya 30, 199053, St. Petersburg, Russia aut Sofina E. Shirshov Institute of Oceanology, St. Petersburg Branch, Russian Academy of Sciences, Vasil'evskii ostrov, Pervaya liniya 30, 199053, St. Petersburg, Russia aut Timofeev A. Shirshov Institute of Oceanology, St. Petersburg Branch, Russian Academy of Sciences, Vasil'evskii ostrov, Pervaya liniya 30, 199053, St. Petersburg, Russia aut Izvestiya, Atmospheric and Oceanic Physics SP MAIK Nauka/Interperiodica 46/2(2010-04-01), 224-231 0001-4338 46:2<224 2010 46 11485 https://doi.org/10.1134/S0001433810020106 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1134/S0001433810020106 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Kagan B. Shirshov Institute of Oceanology, St. Petersburg Branch, Russian Academy of Sciences, Vasil'evskii ostrov, Pervaya liniya 30, 199053, St. Petersburg, Russia aut NATIONALLICENCE 700 1- Sofina E. Shirshov Institute of Oceanology, St. Petersburg Branch, Russian Academy of Sciences, Vasil'evskii ostrov, Pervaya liniya 30, 199053, St. Petersburg, Russia aut NATIONALLICENCE 700 1- Timofeev A. Shirshov Institute of Oceanology, St. Petersburg Branch, Russian Academy of Sciences, Vasil'evskii ostrov, Pervaya liniya 30, 199053, St. Petersburg, Russia aut NATIONALLICENCE 773 0- Izvestiya, Atmospheric and Oceanic Physics SP MAIK Nauka/Interperiodica 46/2(2010-04-01), 224-231 0001-4338 46:2<224 2010 46 11485 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer