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M. V. Sakirko M. V. Panchenko V. M. Domysheva D. A. Pestunov 《Russian Meteorology and Hydrology》2008,33(2):112-116
Results of studying processes of gaseous exchange of carbon dioxide (CO2) in the water surface-atmosphere system of Lake Baikal are considered. Measurements were carried out in the littoral of the lake near the settlement of Bol’shie Koty. The measurement point was selected for the following reasons. First, it is the place where water chemistry and biota have been studied for several tens of years. Second, by its meteorological conditions the place can be considered as background. It is shown that during all hydrological seasons the gas exchange of CO2 in the Baikal water surface-atmosphere system has a well-pronounced trend, whose amplitude depends on the season. The data obtained are indicative of the main role that Lake Baikal biota plays in regulating the intensity of gas exchange. 相似文献
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Malnik V. V. Timoshkin O. A. Suturin A. N. Onishchuk N. A. Sakirko M. V. Tomberg I. V. Gorshkova A. S. Zabanova N. S. 《Water Resources》2019,46(5):748-758
Water Resources - A sanitary–bacteriological and hydrochemical survey of rivers flowing into Lake Baikal near Listvyanka Settl. was carried out in period from 2014 to 2015. Water quality at... 相似文献
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Zavoruev V. V. Domysheva V. M. Pestunov D. A. Sakirko M. V. Panchenko M. V. 《Doklady Earth Sciences》2018,479(2):507-510
The process of gas exchange of CO2 in the atmosphere–water system and its relation to the daily course of variable fluorescence of phytoplankton is studied on the basis of long-term (2004–2014) measurements during the open water period for Lake Baikal. It is found that the decrease in photosynthetic activity of plankton is almost synchronous to the increase in the CO2 flux from atmosphere to water. It follows from comparison of the spring and summer data with December measurements that the daily decrease in variable fluorescence of phytoplankton is caused by the internal daily rhythm of the photosynthetic activity of plankton.
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M. N. Shimaraev V. M. Domysheva R. Yu. Gnatovskii V. V. Blinov M. V. Sakirko 《Geography and Natural Resources》2016,37(3):212-219
We investigated the influence of deep forced temperature convection on aeration of the bottom water layer in the pelagic zone of Baikal. Temperature T (± 0.002°C) and oxygen O2 concentration (± 0.01 mg/L) were measured by using the SBE-25 probe with the SBE-43 oxygen sensor in May-July 2006?2007 and 2009?2013. Oxygen input into the bottom layer with cold intrusions was determined for 79 cases. The study revealed a quantitative correlation between the heat deficit and the rise in oxygen content in the bottom layer during cold intrusions. This correlation was used to reconstruct the values of intrusion aeration of the bottom layer during 1993?2005. It is ascertained that the intrusion-caused 2006?2013-average oxygen input into Baikal’s bottom layer is virtually close to the annual oxygen demand for oxidation processes in the water column and bottom sediments. In the southern and middle parts of Baikal, intrusion-caused input of oxygen corresponds to a higher rate of its demand (4.5?4.6x10-4 mg/L per day). A slight increase in oxygen concentration was detected in the bottom layer of the South and Middle Baikal and a slight decrease in the bottom layer of North Baikal during 1993?2013. 相似文献
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