scholarly journals EVALUATION OF GLACIER MELT CONTRIBUTION TO RUNOFF IN THE NORTH CAUCASUS ALPINE CATCHMENTS USING ISOTOPIC METHODS AND ENERGY BALANCE MODELING

2017 ◽  
Vol 10 (3) ◽  
pp. 4-19 ◽  
Author(s):  
E. Rets ◽  
J. Chizhova ◽  
N. Budantseva ◽  
N. Frolova ◽  
M. Kireeva ◽  
...  
2012 ◽  
Vol 43 (4) ◽  
pp. 460-475 ◽  
Author(s):  
Mathew Herrnegger ◽  
Hans-Peter Nachtnebel ◽  
Thomas Haiden

In this paper the third water balance component, the actual evapotranspiration (ETA), is analysed. Although evapotranspiration rates decrease with increasing altitude, it can be concluded that substantial quantitative differences are found among temperature and energy balance-based techniques for estimating the ETA. The objective of this study is to apply a distributed and continuous hydrological model and to utilise standard meteorological datasets with a high spatio-temporal resolution (1 km2 and 60 min) to estimate the evapotranspiration in high Alpine Austrian catchments. Compared with the Hargreaves and Thornthwaite methods the ASCE-Penman-Monteith approach yields substantially higher potential evapotranspiration (ETP) rates, with basin-values up to 24% higher compared with the temperature-based methods. The decrease of ETP with elevation ranges from 6 to 26 mm per 100 m. The ETA rates differ up to 15%, with a decrease of 18–28 mm per 100 m. About 30% of the annual precipitation is evaporated and this implies that even larger correction factors of precipitation are required to satisfy the runoff. The method is demonstrated in basins in the north central Austrian Alps.


Author(s):  
Ruzanna V. Miroshnichenko ◽  
◽  
Anna Yu. Lukyanova ◽  
Svetlana A. Fedorova ◽  
Svetlana V. Nedvizhaj ◽  
...  

Author(s):  
А. Kh. Dikinov ◽  
А. А. Eshugaova ◽  
М. М. Abdurakhmanova ◽  
М. А. Sadueva

The most progressive and promising model of spatial organization of food markets of the North Caucasus Russian Theatre is a cluster model. In the proposed methodology of the process approach to develop a structural model of agro-food cluster in the NORTH is cluster analysis. The regional food market as a single system, which combines production, marketing and consumption of foods with a specific hierarchy, is characterized by different relationships and proportions between its components and is an important an indicator of a country's economic development, achieving food security. Disclosure of potential in a market system, its effective use, taking into account regional particularities and specificities of the economy, improvement of the spatial organization and improving the efficiency of such a complex system as the regional food market is impossible without knowledge of its essence, principles of formation and operation. In this connection there was a need to develop modern methods of research, evaluation, analysis, improvement of structure and functional organisation of the regional food markets as an important factor for the socio-economic development the country. The novelty of the research lies in the fact that the clustering of agribusiness implemented taking into account the peculiarities of regional AIC on the basis of strategic management zones: industrial, conventional and organic. To determine the effectiveness of the cluster algorithm of its evaluation, which is based on the criteria of usefulness and survival in the conditions of the cluster in the region, which are defined using evaluation scales and weights the main factors utility and survival in the cluster.


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