A model of the wind-driven circulation in Lake Baikal |
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| Institution: | 1. Department of Geology, Institute of Cenozoic Geology and Environment, State Key Laboratory of Continental Dynamics, Northwest University, 710069, China;2. Institute of Geosciences, Christian-Albrechts-University, Ludewig-Meyn-Str. 10, D-24118 Kiel, Germany;3. Technological Institute of Micropaleontology, Unisinos University, Av. Unisinos 950, 93022-750 São Leopoldo, Brazil;1. SOCIB, Parc Bit, Naorte, Bloc A 2° 3p, 07 121 Palma de Mallorca, Spain;2. Mercator Océan, Parc Technologique du Canal, 8-10 rue Hermès, 31520 Ramonville Saint-Agne, France;3. Istituto Nazionale di Geofisica e Vulcanologia, Via Donato Creti 12, 40128 Bologna, Italy;4. IMEDEA (UIB-CSIC), calle Miquel Marquès 21, 07190 Esporles, Islas Baleares, Spain;1. Instituto Dom Luiz, Faculdade de Ciências, University of Lisbon, Portugal Instituto Dom Luiz, Faculdade de Ciências da Universidade de Lisboa, Campo Grande, Ed. C8, 1749-016 Lisboa, Portugal;2. Oceanic Observatory of Madeira, Agência Regional para o Desenvolvimento da Investigação Tecnologia e Inovação, Funchal, Madeira, Portugal;3. CIIMAR - Interdisciplinary Centre for Marine and Environmental Research, Porto, Portugal, |
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| Abstract: | A numerical model based on the Navier–Stokes equations is used to simulate the circulation produced by a strong wind in a cross-section of Lake Baikal. Temperature distributions have been obtained for different stages of the spring warming of the lake, using available measurements and simulating the faster warming of the near-shore areas in accordance with the local stability conditions. These have been used as initial conditions for the prediction of the wind-driven circulation. The results presented suggest that buoyancy forces have little impact on the magnitude of vertical currents descending towards the bottom of the lake, but the action of buoyancy forces could initiate additional motions that have been found to generate strong vertical currents far from the shores. Furthermore, there appears to be evidence in our data of local acceleration linked to changes in the bottom topography of the section. |
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