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Published on 31 December 2016


Adzhiev A. Kh., Kesaonov V. Kh., Kondratyeva N. V., Dahova O.O.

Part 1. Analysis of current state of mudflow processes in the Kozydon and Zemegondon river basins on the territory of the year-round tourist and recreational complex “Mamison” According to the Federal target program of development of resorts of the North Caucasus within the next 10 years in the Republic of the North Ossetia-Alania it is supposed to create year-round tourist and recreational complex “Mamison”. Dangerous glacial processes: avalanches, landslips, landslides, etc. are characteristic for the territory of the complex “Mamison”. These mudflow processes are of serious danger for the objects of the future resort “Mamison”. As a result of realized field surveys and decoding of satellite images of various periods the maps of M:10000 scale of the mudflow basin limits, their centers and the database of morphometric characteristics of mudflow basins were created. As a result of investigation 14 mudflows near Kozydon river and 10 mudflows near Zemegondon river were discovered. The rate of possible maximum volume of mudflows in Kozydon river basin is about 75000 m³. The rate of possible maximum volume of mudflows Zemigondon river basin is 65000 m3. The mudflows in the investigated area take place with more frequency than once in a decade. In the mudflow sediments the size of large fragments does not exceed 25–50 centimeters, some fragments amount to 0.5–2.5 meters in diameter. The mentioned current intensification of mudflow processes in the Kozydon and Zemegondon river basins is connected with defrosting of loose and frozen rocks and possibly with natural phenomena in the break zones. It may be supposed that intensification of mudflows will take place in other areas as well. In this connection, it is necessary to provide monitoring. Therefore, to avoid negative consequences on this territory in future it is recommended to distribute recreational objects of the complex “Mamison” on the basis of considered recommendations that provide full anti-mudflow security. The climate and water balance of the territory also contribute to mudflow formation. Average-annual temperature of the region is +8°С with the minimum average-monthly temperature for 6 snowy months is -5.5°С, maximum average-monthly temperature in July- August is +14.2°С, with 250–300 sunny days a year. Averageannual amount of precipitation is 650–700 mm, 25% of which are in the winter period. There were no floods of catastrophic level in Mamisondon river. Average-monthly water flow rates change from 1 m3/sec. in winter months and to 15 m3/sec — in summer. In the floods period with extreme precipitation water flow rates in Mamisondon river may intermittently exceed 100 m3/sec.
CityNalchik, Vladikavkaz
CountryRussian Federation
Issue2016, № 4(Т.8)
Key wordsGlacial processes, mudflows, basin, grainsize distribution, landslides, Kozydon glacier, Zemegondon glacier, satellite image, map.
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Categories: Articles, Geo-ecological,-Recreational-and-Biomedical-Issues-of-SDMT

Tags: сели, оползни, гранулометрический состав, гляциальные процессы, бассейн, ледник Козыдон, ледник Земегондон, космоснимок, карта.

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