NDLI: Oxygen regime of rivers in Volga, Ob, and Lena basins

Content Provider	Springer Nature Link
Author	Goncharov, A. V. Isaev, V. A. Lobchenko, E. E. Nichiporova, I. P.
Copyright Year	2011
Abstract	A close negative correlation was found to exist between oxygen concentration in winter and the latitude in rivers in the basins of the Ob and Volga. This can be explained by an increase in the duration of the freeze-up period (during which oxygen is consumed for oxidation of organic matter (OM) in water and bottom sediments) in the direction from the south to the north, while the input from oxygen from the atmosphere and photosynthesis is practically zero. No inverse relationship was found to exist between dissolved oxygen and the latitude, because in rivers of mountain and semimountain types, typical of this basin, organic matter (OM) does not accumulate in bottom sediments and the conditions of atmospheric circulation are better than in lowland rivers. The magnitude of seasonal variations in oxygen in lowland rivers is greater than in mountain ones because of an abrupt drop in oxygen concentration in slowly flowing rivers in winter and the saturation of their water by oxygen from photosynthesis in summer.
Starting Page	608
Ending Page	614
Page Count	7
File Format	PDF
ISSN	00978078
Journal	Water Resources
Volume Number	38
Issue Number	5
e-ISSN	1608344X
Language	English
Publisher	SP MAIK Nauka/Interperiodica
Publisher Date	2011-09-18
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	dissolved oxygen water reaeration mountain rivers lowland rivers OM production and destruction duration of freeze-up period Waste Water Technology Water Pollution Control Water Management Aquatic Pollution Hydrogeology
Content Type	Text
Resource Type	Article
Subject	Water Science and Technology

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