The study area comprises of the endorheic basin of Van lake located in the Eastern Anatolia region of Turkey. The Van lake basin formulates Turkey's second-largest closed basin. The subject matter of present study includes trend analysis of average precipitation statistics collected from 7 stations of Van-Region, Muradiye, Erçiş, Gevaş, Özalp, Tatvan and Ahlat with more than 30 years of observation in the basin. The research aims to analyze the annual and seasonal trends of rainfall by collecting monthly measured average precipitation data from Van-Region, Muradiye, Erçiş, Gevaş, Özalp, Tatvan and Ahlat stations that have been measuring the amounts throughout the basin for many years. Mann-Kendall Test, Spearman's Rho and Şen Test were selected as research methods for analysis. According to the results obtained, there was a decrease in annual precipitation in Gevaş and Ahlat stations while an insignificant increase was observed in Van-Region. Seasonally, a significant decrease was detected in Erciş and Ahlat stations, while a insignificant increase was observed in Van-Region. However, the downward trend in both annual and seasonal precipitation is noteworthy across the basin, while a insignificant increase is observed in Van Region station.
Primary Language | Turkish |
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Subjects | Geological Sciences and Engineering (Other) |
Journal Section | Research Articles |
Authors | |
Publication Date | June 25, 2020 |
Submission Date | February 6, 2020 |
Acceptance Date | May 6, 2020 |
Published in Issue | Year 2020 |