نوع مقاله : مقاله پژوهشی
1 دانشجوی مقطع دکترا / تخصصی آب وهواشناسی،واحدعلوم تحیقات،دانشگاه آزاداسلامی،تهران،ایران
2 استاد/ گروه جغرافیا ، دانشگاه خوارزمی ، تهران، ایران
3 دانشیار/ گروه جغرافیا، واحدعلوم تحقیات، دنشگاه ازاد اسلامی،اهواز، ایران
4 استادیار / گروه جفرافیا،واحدعلوم تحقیات،دانشگاه ازاداسلامی، تهران،ایران
عنوان مقاله [English]
The main purpose of this study is to investigate the factors affecting water level fluctuations in Urmia Lake. For this purpose, it was used to investigate the relationship between water level fluctuations in Urmia Lake with climatic and hydrological parameters (precipitation, temperature, river flow, etc.). Urmia Lake water level was used for 48-year statistical period, 27 meteorological stations for variable precipitation and temperature. , From non-parametric Ran Tess test To investigate the trend, mutations and changes in the independent variables of precipitation, temperature, river flow and stagnant surface of the wells, my-Kendall statistical test was used. Regarding the annual rainfall, the Urmia catchment area showed a decreasing and significant trend in the statistical period. The results of the study of the Dubai change trend showed that the Dubai changes during the period had a significant trend and followed a decreasing trend with a jump from the beginning of the statistical period. The change in the static level of the observation wells also has a significant trend and with a jump in 2006, it has followed a decreasing trend. The results of Pearson correlation coefficients test showed that there is a relatively strong correlation between independent variables (temperature, precipitation, river flow and stagnant water level) and lake water level fluctuations at the level of 0.05 and indicates the validity and high strength of the linear relationship between The water level and the degree of impact of this variable are independent variables.