Global climate change is one of the main problems in the world along with terrorism and poverty. Samtskhe-javakheti region, located in the south of Georgia, is very different from other regions of the country in terms of climate conditionings which is mainly due to local circular processes. Absolute altitude of Samtskhe-Javakheti varies in the 900-3300 m range. It is surrounded by high ridges. Meridian disposition of mentioned ridges weakens the impact of large-scale atmospheric circulation processes developed in the territory of the South Caucasus and significantly strengthens the influence of local complex orographic factors (tablelands, plateaus, basins) that has considerable effect on the cloud regime. Data used in the study is mainly based on observations on atmospheric precipitation (key indicators of precipitation, their monthly and annual amounts), obtained from the following (formerly existing and currently acting in Samtskhe-Javakheti) meteorological stations and weather shelters, namely: Akhalkalaki (1967Akhalkalaki ( -2006, Akhaltsikhe (1971Akhaltsikhe ( -2010 and Paravani (1967Paravani ( -2006. Statistical, climatological and graphical analyses of multi-year (40 year period) meteorological data is used for research. Based on analyses of data, obtained for Samtskhe-Javakheti region, observed for the 10 year periods, a sharp change of monthly and annual amounts (the increase, as well as a reduction in precipitations), was observed.
Aim: Methodology:Results: Interpretation:The process of the sediment accumulation in reservoirs stops after the silting prism is formed on the body of equilibrium bed, by means of which the river can transport a full range of sediment downstream. Presently, there is no approved method for forecasting the parameters of the silting prism and the equilibrium bed. In order to study the process of the silting prism formation and the equilibrium channel forecasting the field experiments were carried out on small mountain rivers of Georgia.Methodology of the natural experiment implementation was created. For the analysis of the obtained results the methods of mathematical statistics and differential calculus were applied.The experiments showed that equilibrium bed is formed much higher than the initial position of the riverbed causing a serious threat of catastrophic inundation in case of flood. It was found that final result of the reservoir silting is an accumulative terrace, where an equilibrium channel is produced. Length of the train is a function of the maximum flow discharge, the deposit of runoff, diameter of bottom sediment and initial inclination of riverbed. Fractional distribution of the sediments into silting prism is determined by the type of the reservoir regulation and the intraannual distribution of the fluvial sediments.is The mechanism of riverside destruction by water flow is considered as a random process, which depends on both the effect of flow rate and riverside stability. Vulnerability, the characteristic of the riverside is taken as the indicator of this process with respect to such influence, and famous model "load -stability" from the theory of reliability used for its identification.
In the presented article the reason of the village Anaklia territory, the site of the planned construction of a deep-sea commercial port� flooding is discussed. It should be noted that the village mainly is located on the sandy shore of the river mouth of river Enguri. In calm, but rainy weather, precipitation practically freely penetrates through the sandy soil without leaving any water holes and flooded land areas after the rain. However, on March 24-25, 2021, in rainy weather and stormy seas, the village was partially inundated by rainy water, due to which the first floors of residential buildings and hotels were flooded, and significant damage was caused to residents of such places. Therefore, this extraordinary case aroused a certain interest in order to develop a preventive measure to exclude a possible recurrence of the noted phenomenon. In our case during the storm, the top of the wave crest was elevated over the mean sea level to 3.5 meters, caused partial blockage of river Enguri runoff, due to which the water level in the river arose and seeped into the sandy layer to the ground. In article, the quantitative data of the theoretical calculations of the wave parameters that led to the development of this phenomenon are presented.
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