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Long-standing variations in the structure of bottom sediments within typical habitats of the aquatic life are characterized using the Volzhskii Pool of the Rybinsk Reservoir as an example. The role of hydrodynamic processes of the littoral zone in the formation of the ground complex of shallow water areas of the pool is discussed. The trends in variation in the quality of bottom substrate in fish habitats are analyzed. The peculiarities of long-standing variations in the distribution of types of bottom sediments in the entire reservoir are shown. 相似文献
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V. V. Zakonnonov S. A. Poddubnyi A. V. Zakonnova V. V. Kas’yanova 《Water Resources》2010,37(4):462-470
The direction and rate of sedimentation processes in variable-backwater zones—upstream river-type reaches (lower pools of
hydropower systems) and large bays of reservoirs of the Volga chain (many-year aspect, mesoscale level) and in the deltas
of median and small rivers in the Upper Volga region, regulated by beaver ponds (seasonal aspect, microscale level) are characterized.
The changes in bed relief and the structure of sediments in the examined zones were found to have common features and pass
all stage of bed and shore formation typical of lowland reservoirs-from active erosion-abrasion activity to its gradual decline
and from intense to passive sedimentation. 相似文献
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V. A. Poddubnyi A. P. Luzhetskaya Yu. I. Markelov S. A. Beresnev S. Yu. Gorda S. M. Sakerin 《Izvestiya Atmospheric and Oceanic Physics》2013,49(3):285-293
The results of studies into the aerosol optical depth (AOD) for the atmosphere in the Middle Urals in the spectrum range of 0.34–1.02 μm for 2004–2010 is presented. The interannual, annual, seasonal, and daily variations in the AOD are analyzed. The major statistical characteristics of the AOD, the parameters of the probability density function of distributions over different wave lengths, and the parameters of Angstrom’s formula for the different seasons are calculated. The monitoring stations in the Russian segment of the AERONET network are ranked with respect to the AOD value. A shift from March to May in the spring maximum of the AOD is revealed in comparison with the results of the actinometric observations for the period of 1960–1986. A qualitative assessment is given to the influence of forest and peat fires in the region on the AOD. A classification of the states of aerosol haze in the atmosphere according to the AOD values is proposed. 相似文献
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