Natural and medical sciences

2009 Issue №1

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Shifts of adulterations as the result of seasonal horizontal convection under the shelf plate (numerical modeling)



The article shows that the water dynamics induced by differential cooling in upper shelf area (down to 60 m depth) is significantly influenced by day/night variations which delays an establishing of a seasonal water-exchange in shallows. Convective exchange flows within the entire shelf region in seasonal circle requires 4—7 weeks to reach a quasisteady state. Formation of a linear portion on the horizontal temperature profile can be used as an indicator of the approaching of the flow to the steady state. Flushing time for the shelf zone under steady-state condition is 30 days and is only slightly influenced by the slope length.


1. Косарев А. Н. Многолетняя изменчивость гидрологических характеристик в глубинных слоях Каспийского моря // Океанология. 1963. Т. 3, вып. 1. С. 49—59.

2. Косарев А. Н., Тужилкин В. С. Климатические термохалинные поля Каспий­ского моря / ГОИН, МГУ. М., 1995.

3. Fer I., Lemmin U., Thorpe S. A. Observations of mixing near the sides of a deep lake in winter // Limnol. Oceanogr. 2002,  47(2). Р. 535—544.

4. Тихомиров А. И. Термика крупных озер. Л.: Наука, 1982.

5. Chubarenko I., Esiukova E., Koutitonsky V. Simulation of horizontal convection induced by surface cooling over sea slope // Volume of abstracts of Baltic Sea Sci­ence Congress, March 19—22, 2007. Rostock, Germany. Rostock, 2007. P. 2. P. 26.