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11.
Water Resources - The article continues the discussion of the developed new computer technology for the analysis of problems and decision support in the supply of water resources to the users of... 相似文献
12.
Lake Baikal: Extreme level as a rare hydrological event 总被引：1，自引：0，他引：1
M. V. Bolgov A. L. Buber E. A. Korobkina A. A. Lyubushin I. A. Filippova 《Water Resources》2017,44(3):522-536
The optimal boundaries of water level variation range in Lake Baikal have been determined under the conditions of runoff regulation at the Irkutsk HPP and the extremely low water abundance in lake basin in recent years. The properties of the time series of level regime and the characteristics of runoff from its drainage basin have been studied. The formation of long-term dry periods in the region has been studied, and the regularities in level regime variations in the lake have been estimated for both natural and runoff-regulation conditions, and the specifics of runoff regulation and level drawdown in dry years have been considered. 相似文献
13.
We examine the time coincidence and spatial homogeneity of the annual stream runoff fluctuations in Siberia and the Far East.
A regionalization of the study territory for the time coincidence of the stream runoff fluctuations has been carried out by
analyzing the correlation matrix on the basis of the algorithm of automatic classification of objects through identification
of groups with homogeneous attributes according to a specified homogeneity criterion. The territory’s spatial homogeneity
was assessed by constructing and analyzing spatial correlation functions and accompanied by a checking for the possible anisotropy. 相似文献
14.
Pierre Chevallier Bernard Pouyaud Marie Mojaïsky Mikhaïl Bolgov Oliver Olsson Melanie Bauer 《水文科学杂志》2013,58(8):1491-1506
AbstractThe Vakhsh and Pyandj rivers, main tributaries of the Amu Darya River in the mountainous region of the Pamir Alay, play an important role in the water resources of the Aral Sea basin (Central Asia). In this region, the glaciers and snow cover significantly influence the water cycle and flow regime, which could be strongly modified by climate change. The present study, part of a project funded by the European Commission, analyses the hydrological situation in six benchmark basins covering areas of between 1800 and 8400 km2, essentially located in Tajikistan, with a variety of topographical situations, precipitation amounts and glacierized areas. Four types of parameter are discussed: temperature, glaciation, snow cover and river flows. The study is based mainly on a long-time series that ended in the 1990s (with the collapse of the Soviet Union) and on field observations and data collection. In addition, a short, more recent period (May 2000 to May 2002) was examined to better understand the role of snow cover, using scarce monitored data and satellite information. The results confirm the overall homogeneous trend of temperature increase in the mountain range and its impacts on the surface water regime. Concerning the snow cover, significant differences are noted in the location, elevation, orientation and morphology of snow cover in the respective basins. The changes in the river flow regime are regulated by the combination of the snow cover dynamics and the increasing trend of the air temperature.
Editor Z.W. Kundzewicz 相似文献
15.
M. V. Bolgov 《Water Resources》2010,37(3):297-305
An approach is proposed to assessing the reliability of functioning of a complex water management system under the conditions
of a long dry period. The approach involves the specification of scenarios of long-term changes in the annual runoff. A method
of simulation of artificial series of inflow to elements of water management system is proposed. Criteria for the choice of
estimated inflow series are substantiated. The results of water management and hydropower calculations for different scenarios
(models) are discussed. Challenges that may face the water management complex of the Volga basin in extremely dry periods
are formulated. 相似文献
16.
The structure of a hydrodynamic model of the Lower Volga, which has been developed for solving water management problems, and some results of computer simulation of variations of water level at the reach from the Volgograd HPP to the Caspian Sea are considered. The conditions under which the one-dimensional hydrodynamic model, developed in Delft Hydraulic Laboratory of Technical University based on Saint-Venant equations, can be successfully applied in the Lower Volga are determined. 相似文献
17.
M. V. Bolgov E. A. Korobkina N. V. Osipova I. A. Filippova 《Russian Meteorology and Hydrology》2016,41(8):577-584
The series of the maximum annual water level in the Amur River are long enough but non-uniform. The need is substantiated in dividing the series of the maximum water level into two uniform periods and in using the certain period (with the duration of more than 35 years) for the subsequent statistical analysis. This is the period which indicates the formation conditions of runoff and maximum water levels including the anthropogenic load (runoff control). 相似文献
18.
M. V. Bolgov E. A. Korobkina M. D. Trubetskova M. K. Filimonova I. A. Filippova 《Russian Meteorology and Hydrology》2014,39(3):187-194
Carried out is the analysis of stationarity of minimum runoff series in summer and winter for the Volga basin rivers. Two conditionally homogeneous periods are singled out within the temporal variations of these characteristics, and the date of their change varies throughout the territory of the basin. The considerable rise in air temperature in winter on the whole territory of the Volga basin is demonstrated as a result of the analysis of meteorological parameters. The relationship between runoff variations and wintertime temperature variations is proposed for predicting the minimum runoff. The distribution of minimum values of runoff is computed using this dependence and the forecast method based on the sum of distributions. 相似文献
19.
Yu. V. Bolgov V. S. Inyukhin Kh. M. Kalov V. N. Stasenko 《Russian Meteorology and Hydrology》2009,34(3):159-164
A principally new criterion that takes into account a probabilistic nature of introduction of an agent into a seeding layer was used when estimating the physical efficiency of active modification. The results of the analysis of intense hailstorm modification show that the criterion adequately determines the modification success, which is confirmed by the time variation of convection cell parameters. 相似文献
20.
In arid regions of Central Asia, cyclicity in the humidification behavior of a region shows long-term trends of changes in the water levels of closed lakes. Thus, the last 10 years saw a decrease in the water level by several meters on one of the region’s largest lakes — Hulun Nur (PRC). For water level stabilization on the PRC’s territory, a package of measures is undertaken for a partial Hailar river flow transfer (in the upper reaches of the Argun’ river) to Lake Hulun Nur. It is obvious that the lake’s water level regime will experience substantial changes. This paper discusses a variety of consequences of the river flow transfer and different water management modes, and forecasts the lake’s possible level regime, the Argun’ river discharge and the ecological consequences of measures of this kind for the Russian part of the drainage basin. 相似文献