Hydrochemical Conditions of the Chistaya Banka
Polygon in the Volgas Avant Delta

A. K. Ambrosimov^a, D. A. Ambrosimov^b, P. N. Makkaveev^a, Yu. R. Nalbandov^a,
L. E. Skibinskii^c, and P. V. Hlebopashev^a

^a Institute of Oceanology, Russian Academy of Sciences, Moscow, Russia

^b Faculty of Geography, Moscow State University, Moscow, Russia

^c Institute of Oceanology, Northwestern Branch, Russian Academy of Sciences, Archangelsk, Russia

E-mail: ambrosimov@ocean.ru

Abstract—Characteristics of different types of river drainage were obtained during studies of a polygon in the
near-mouth part of the Volga River in 2000–2003: “fast” (flowing through deep channels) and “slow” (that
which passes through the littoral parts of the delta (1–2 m)). The low current velocities (lower than in the chan-
nel waters by a factor of ten), the abundance of water vegetation, and the strong heating of the waters lead to
the high intensity of the biochemical processes. Therefore, the chemical composition of the waters is subjected
to significant transformation with intensity so high that it allows comparing these regions with some sort of
“bioreactor.” These changes influence the dissolved oxygen and various forms of carbon content.

DOI: 10.1134/S000143700905004X

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