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Seasonal Variations and Flow Anomalies of the Cyclonic Circulation in the Northeastern Middle Caspian

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Abstract

The experimental data given in the article show a perturbation of currents in the northeastern Caspian Sea near Peschanomysskoe uplift, which is caused by the interaction between cyclonic circulation and the southern slope of the uplift. This interaction results in that the water of the cyclonic circulation forks into lower and upper branches. The lower, bottom branch is reflected southwestward by the uplift, where, at the head of the uplift, it meets water flowing southeastward over the bed of the Yuzhno-Buzachinskii depression, while the upper branch, consisting of the surface and intermediate cold water, is pushed upward and flows over the uplift. The rise of cold water forms upwelling in the top layer, which extends over the entire northeastern part of the sea.

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Funding

Data processing was supported by the Russian Science Foundation, project no. 14-27-00114, Sedimentobiogeochemical Studies of Seas in European Russia (Dispersed Sedimentary Matter, Bottom Sediments, Diagenesis). The Interaction between Geospheres, Matter and Energy Fluxes. The interpretation of data was partially carried out under Governmental Order to the Institute of Oceanology, Russian Academy of Sciences for 2015–2017 (project nos. 0149-2014-0025, 0149-2014-0026).

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  1. Shirshov Institute of Oceanology, Russian Academy of Sciences, 117997, Moscow, Russia

    A. K. Ambrosimov

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  1. A. K. Ambrosimov
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Correspondence to A. K. Ambrosimov.

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Translated by G. Krichevets

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Ambrosimov, A.K. Seasonal Variations and Flow Anomalies of the Cyclonic Circulation in the Northeastern Middle Caspian. Water Resour 46, 693–702 (2019). https://doi.org/10.1134/S0097807819050038

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