scholarly journals RECENT TRENDS Of RIVER RUNOff IN THE NORTH CAUCASUS

2018 ◽  
Vol 11 (3) ◽  
pp. 61-70 ◽  
Author(s):  
E. P. Rets ◽  
R. G. Dzhamalov ◽  
M. B. Kireeva ◽  
N. L. Frolova ◽  
I. N. Durmanov ◽  
...  

Based on observational data from 70 hydrological stations in the North Caucasus an evaluation of present values of mean annual runoff, minimum monthly winter and summer runoff was carried out. Series of maps was drawn. Significant changes in mean annual. minimum monthly and maximum runoff during last decades have been revealed in the North Caucasus. A rise in both amount of water availability and potential natural hazard is characteristic of the most of the North Caucasus that is considered to be caused by recent climate change. Mean annual runoff during 1978-2010 increased compared to 1945-1977 by 5-30 % in the foothills and by 30-70% in the plain area. An increase in winter minimum monthly runoff is as well most intensive in the plain part of study area (>100%). Within the foothills it amounts to 50-100%. In mountainous area long-term oscillation of winter minimum monthly discharge strongly depends on local factors, such as geological structure. The rate of the increase in summer minimum monthly discharge regularly grows from central foothill part of Northern Caucasus (30-50%) to the Western plain territory (70-100%). In Kuban river basin 30% of analyzed gauging stations show positive trend in maximum instantaneous discharge, while 9% negative. On the contrary, in the Eastern part – Terek river basin – negative trend in maximum instantaneous discharge is prevalent: 38% of gauging stations. Positive trend in Terek river basin is characteristic of 9.5% of analyzed gauging stations.

2020 ◽  
Author(s):  
Ivan Durmanov ◽  
Ekaterina Rets ◽  
Maria Kireeva

<p>Difficult climatic conditions characterized The North Caucasus and high flood hazard in this region. Over the past decades, significant climate changes have occurred, which has influenced the flow of mountain rivers, including the maximum flow. Since the end of the last century, there has been an increase in the number of dangerous floods in the basins of North Caucasus rivers, which led to significant material damage and deaths. In the flood zone were several tens of thousands of houses. In addition, infrastructure facilities were destroyed and hydraulic structures damaged. In this regard, there is an urgent task of analyzing the spatio-temporal changes in the characteristics of the maximum runoff and the factors that determine them.</p><p>In the course of the study, methods of statistical analysis, geoinformation methods, graphoanalytic, and the method of geographical generalization were used. Calculation of statistical parameters and visualization were carried out using the programming languages R and FORTRAN.</p><p>The spatial variability of the maximum runoff of the rivers of the North Caucasus over the past 70-80 years was analyzed. The results indicate a predominantly negative trend of maximum water discharge in the highlands of the North Caucasus and a positive in the middle reaches of the Kuban. This is consistent with data on the absence of a positive trend in average annual temperatures in the highlands due to lower temperatures in the winter, as well as with an increase in the number of days with heavy rainfall. The latter factor determined the almost universal increase in interannual variability of maximum expenditures, which indicates an increase in flood hazard throughout the region.</p><p>An analysis of the characteristics of the flood flow showed that the dependence of floods on precipitation in the mountains manifests itself at extreme values, while for all the main factor is air temperature. The maximum discharge of rain floods tends to increase in foothill areas, while no changes have been detected in the mountains.</p><p>The results can give a clearer view of the processes of changing the maximum flow, and become the basis for the development of measures to minimize the damage from such natural disasters.</p><p>This work was financial supported by RFBR (Project 20-35-70024)</p>


2020 ◽  
Vol 61 ◽  
pp. 69-76
Author(s):  
A. E. Dedova

This paper presents the results of two years of research (2018-2019) of the most important phonological phases of seasonal growth and development, biometric parameters, productivity and economic efficiency of new varieties of Chinese plum (P. salicina Lindl.) grown in the foothill zone of the North Caucasus in the Krymsk district of Krasnodar territory on a plot of the Krymsk experimental breeding station – branch of VIR. As a result of research, the varieties Angeleno, Black Star, Byron Gold, Black Amber, Larry Ann and Sun Gold were recommended for cultivation using intensive technologies.


Author(s):  
Х.М. Хетагуров

Кленовники Северного Кавказа – особый тип лесных формаций. Особенность проявляется не только в структуре фитоценозов, но и в способах самовозобновления. Объект исследования – чистые и смешанные кленовники в нескольких урочищах РСО-Алания. Объекты расположены в различных условиях горного рельефа и на разной высоте над уровнем моря, от 1100 до 1900 м. Целью исследования является установление особенностей семенного возобновления кленовников, произрастающих в верхнем поясе распространения лесов на Северном Кавказе. Для достижения поставленной цели устанавливали время цветения и созревания семян по вертикальным поясам распространения кленовников. Обилие цветения и средний балл плодоношения устанавливали по В.Г. Капперу. Биометрические характеристики семян определяли по урочищам в трех повторностях. Учет подроста проводили на круговых учетных площадках по 10 м2, в соответствии с методикой А.В. Грязькина. Установлено, что цветение клена Траутфеттера начинается 10–14 мая и заканчивается в третьей декаде мая. Семена начинают созревать к концу августа – к началу сентября. Сроки опадения семян растянуты. Часть семян попадает на почву до начала листопада, поэтому они оказываются погребенными под опадом. Такие семена быстро теряют всхожесть, выпревают. Другая часть опадает вместе с листьями. Третья категория семян (самые легкие) держатся на деревьях до декабря и даже до весны. Естественное возобновление клена семенами под пологом материнского древостоя сильно затруднено из-за мощного травяного покрова. В древостое с сомкнутым пологом доля цветущих и плодоносящих деревьев составляет 2–3%, а средний балл плодоношения составляет 1,3. Освещенность на поверхности почвы не превышает 100 люкс, т. е. составляет 0,2–0,3% от освещенности на открытом месте; на высоте 1,3 м (над травостоем) освещенность несколько выше – от 1,2 до 1,6 тыс. люкс. Под пологом древостоя преобладает подрост вегетативного происхождения. У верхней границы кленового леса подрост семенного происхождения встречается в окнах, прогалинах и на открытых местах в количестве 430–630 экз./га. По высоте преобладает крупный подрост 50–60%, доля мелкого – 10–20%. The maple stands of the North Caucasus – a special type of forest formations. The peculiarity is manifested not only in the structure of phytocoenoses, but also in the ways of self-renewing. Object of research – pure and mixed maple stands in some areas of North Ossetia-Alania. The properties are located in various mountainous terrain and at different heights above sea level from 1100 to 1900 m. The aim of the study is to establish the characteristics of the seed the resumption of the maple stands growing in the upper belt of forests spread in the Northern Caucasus. To achieve this goal setting time of flowering and ripening of seeds on vertical zones distribution dominated. The abundance of flowering and the average score of fruiting was established by V.G. Capper. Biometric characteristics of the seeds was determined by the tracts in three replicates. Accounting for the undergrowth was carried out on a circular experimental plots at 10 m2, in accordance with the method of A.V. Grashkin. It is established that the flowering maple Trautvetter begins may 10–14 and ends in the third week of may. Seeds begin to ripen by late August – early September. The timing of subsidence of the stretched seed. Some of the seeds falls to the ground before the leaves, so they are trapped under the litter. These seeds quickly lose their germination, vypivaet. The other part falls along with the leaves. The third category of seeds (the light) stay on the trees until December and even till spring. Natural regeneration of maple seeds under the canopy of parent stand is very difficult due to the strong grass cover. In forest stands with dense canopy, proportion of flowering and fruit-bearing trees is 2–3%, and the average score of fruiting is 1.3. The illumination on the surface of the soil does not exceed 100 Lux, i. e. 0.2–0.3% of the light in the open, at a height of 1.3 m (on grass) the lighting is slightly higher, from 1.2 to 1.6 thousand Suite. Under the canopy of the forest the undergrowth is dominated by vegetative origin. At the upper boundary of the maple forest, saplings of seed origin occurs in Windows, clearings and open places in the number 430–630 ind./ha. In height dominated by large undergrowth of 50–60%, the share of small – 10–20%.


2021 ◽  
Vol 13 (3) ◽  
pp. 36-45
Author(s):  
Nadezhda O. Bleich ◽  

The article analyzes the educational policy of Russia regarding the Muslims of the North Caucasus, substantiates the formation of the educational potential of the Muslim mountaineers in the historical aspect associated with the evolution of the educational paradigm of the state in the field of their education, the result of which was the adaptation of the regional structure of education to the all-Russian system. It is concluded that the imperial government, adapting to the situation of capitalism and carrying out modernization in the region, began to pay more attention to the issues of enlightening "infidels". But due to the inconsistent policy of officials, the coverage of Muslims by training was insufficient and required further reform of the national educational system.


2020 ◽  
Vol 12 (3) ◽  
pp. 349-356
Author(s):  
Vyacheslav BABURIN ◽  
◽  
Svetlana BADINA ◽  

The article proposes a methodological approach to potential damage from natural hazards forecasting in case of large-scale investment projects realization in ski tourism planning, as well as to assessing changes in the vulnerability of the territory in which these projects will be implemented. The method was verified on the data of the “Northern Caucasus Resorts” tourist cluster. The study purpose is the creation and verification of a methodology for socio-economic damage predicting in limit values and vulnerability changing in the regions of the “North Caucasus Resorts” tourist cluster objects localization for the long term. Research methods – statistical (a structural approach based on the identification of common structural patterns of several sets). The lack of statistical information on significant parameters for forecasting determine necessitates of using the various logically non-contradictory revaluations based on the identified structural similarities for the calculation of their values within the planning horizon. The study results and main conclusions – in case of the “North Caucasus Resorts” tourist cluster creation the number of people potentially located in avalanche and mudflow danger areas will significantly increase in all of its facilities localization municipalities, which indicate an increase in the individual risk of death level for this territory. The present population in the ski season in some of the most remote and underdeveloped areas can increase up to 30 times. The increment in the value of the fixed assets for the municipalities under consideration will be from two to 90 times, potential damages in limit values will reach tens of billions rubles.


Author(s):  
Андрей Климов ◽  
Andrey Klimov ◽  
Борис Прошкин ◽  
Boris Proshkin

The study of the form diversity of Siberian poplar species P. nigra , P. laurifolia and P. × jrtyschensis serves as the initial basis for identifying the adaptive capacity of populations, their economically valuable forms and breeding potential. The carried out analysis of the polymorphism of the species in nature and their cultivated forms showed their considerable diversity in terms of their habitual characteristics. It was revealed that the species of P. nigra , P. laurifolia and P. × jrtyschensis have been studied rather irregularly. The paper features an assessment of the form diversity in the North-Western part of the Altai-Sayan mountainous area. The analysis was performed on the basis of qualitative features of the crown, bark, leaves and shoots. Within the studied territory, P. nigra is characterized by the presence of two morphotypes, according to the nature of the pubescence and two distinct forms of bark color. It has been established that the populations of P. laurifolia of the Tom’ river basin are characterized by a greater polymorphism, both according to the diversity of morphotypes of shoots and pubescence, and by the color and structure of the cortex. The white and green bark forms of the laurel poplar are valuable for sustainable construction and selection work. In P. × jrtyschensis , gray bark forms predominate in populations, and its diversity requires a further systematic study.


2021 ◽  
Vol 43 (4) ◽  
pp. 437-450
Author(s):  
Irina Malneva ◽  
Nina Kononova ◽  
Muhtar Hadzhiev

The article presents an assessment of technogenic impact on the development of hazardous geological processes in the mountainous regions of the Northern Caucasus in the current century. Technogenic impact is determined by the stability of rock formations that make up the Krasnodar Territory, Kabardino-Balkaria, and North Ossetia relative to the impacts of other forces. It is also noted that the activity of hazardous geological processes is largely determined by the interaction of climatic conditions, which determine their speed, and technogenesis. Examples of problematic territories of the North Caucasus are given. To assess climatic changes and major catastrophes, a typology of atmospheric circulation in the Northern Hemisphere was developed under the leadership of B.L. Dzerdzeevsky. Typification materials from the period between 1899 and 2018 are posted in the public domain, at www.atmospheric-circulation.ru. The largest catastrophes, in which landslides and mudflows became more active, and the interaction of natural and man-made factors in these disasters are considered.Hazardous geological processes can disrupt the sustainable development of individual regions with their negative impact on the environment. The assessment of their danger is therefore of special current relevance. The article considers the possibility of predicting catastrophes associated with these processes. Long-term forecasts of landslides, mudflows and other processes continue to be important. The methodology of such forecasting was previously developed in sufficient detail. The greatest importance is assigned to operational forecasts that will make it possible to warn of possible danger hours or even days ahead.


Author(s):  
В.М. Газеев ◽  
В.Ю. Герасимов ◽  
А.Г. Гурбанов ◽  
О.А. Гурбанова

На основании изучения геологических отчетов и публикаций охарактеризованы поделочные камни Северного Кавказа осадочного и метаморфогенного происхождения. Приведено краткое геологическое описание наиболее типичных месторождений мрамора и декоративного известняка. Рассмотрены возраст образования и цветовая палитра камней этого типа. Определены территории и геологические разрезы, благоприятные для их поисков Based Based on the study of geological reports and publications, the ornamental stones of the North Caucasus of sedimentary and metamorphogenic origin are characterized. A brief geological description of the most typical deposits of marble and decorative limestone is given. The age of formation and the color palette of stones of this type are considered. The territories and geological sections favorable for their search are determined


Author(s):  
С.В. Попов ◽  
О.А. Гурбанова ◽  
А.Г. Гурбанов ◽  
В.М. Газеев

Аннотация: на основании изучения геологических отчетов, научных публикаций и маршрутных ис- следований выявлены минералы и поделочные камни, встречающиеся на Северном Кавказе в породах ультраосновного и основного составов. Установлено, что их происхождение связано с метасомати- ческими процессами, протекавшими на контактах ультраосновных пород с габброидамии гранитами, а также в доюрских корах выветривания и зонах разломов. Приведено краткое описание наиболее ти- пичных проявлений коллекционных минералов и поделочных камней. Examining geological reports, scientifi c publications and routing studies minerals and ornamental stones that occur in ultrabasic and basic rocks of the North Caucasus have been identifi ed. It is found that their origin is related to metasomatic processes that occurred in the contacts of ultrabasic rocks, gabbroids and granites and also in the Pre-Jurassic weathering crust and in fault zones. A brief description of the most typical occurrence of collectible minerals and ornament stones has been provided. .


Author(s):  
В.Б. Свалова ◽  
В.Б. Заалишвили ◽  
Г.П. Ганапати ◽  
А.В. Николаев

Горные и прибрежные районы являются регионами наиболее подверженным стихийным бедствиям. Некоторые горные районы, которые уязвимы для оползней, также подвергались воздействию землетрясений. Когда в таких районах происходит землетрясение, риск возникновения оползня значительно возрастает. Природные опасности наносят огромный урон в мире и ежегодно их жертвами становятся множество людей. Концепция естественного риска может быть успешно использована для анализа природных опасностей и смягчения риска. Горные и предгорные районы Северного Кавказа расположены в зоне альпийской тектономагматической активации Большого Кавказа и характеризуются интенсивными геодинамическими процессами, наличием активных вулканов, высокой сейсмичностью (9-10 баллов) пульсирующими ледниками и самым широким развитием геологических опасностей различных генетических типов. Проблема сейсмической опасности и оценки риска Северного Кавказа генетически связана с активностью Большого Кавказа, самые сильные сейсмические события которого играют определяющую роль для некоторых регионов Северного Кавказа. Mountainous and coastal areas are the most affected regions for natural hazards. Certain mountainous areas are vulnerable to landslides but have also been affected by earthquakes. When an earthquake occurs in such areas, the risks for a landslide to occur grow tremendously. Natural hazards cause huge damage in the world and kill many people each year. The concept of natural risk can be successfully used for natural hazards analysis and reduction. Mountain and foothill areas of Northern Caucasus are located in the zone of alpine tectonomagmatic activation of Greater Caucasus and they characterized by intense geodynamic processes, the presence of active volcanoes, pulsating glaciers high seismicity (9-10 points) and broadest development of geohazards with different genetic types. The problem of seismic hazard and risk assessment of the North Caucasus is genetically related to the activity of the Greater Caucasus, the strongest seismic events of which play a determining role for some regions of the North Caucasus.


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