Variability Analysis on Water Quality of Streamflow from Yesilirmak Basin in Turkey

In this paper, variability in monthly water quality records at Durucasu monitoring station on the Yeşilırmak River was analyzed by considering the Mann-Kendal (MK) and Theil-Sen Slope estimator (TSE) statistical approaches to detect the direction and magnitude of an available monotonic trend in any given data. The pH, chlorides, sulfates and SAR data sequences for some months had statistically significance upward trend when there was a decreasing trend in streamflow data of the nine months. The largest percent change in streamflow data was found as 153% in November, whereas July in the pH, June in chlorides and January in sulfates and SAR had the maximum percent change

Keywords:

Yesilirmak, water quality, Mann-Kendal Theil-Sen Slope estimator,

PDF

___

Anonymous (1970). Soils of Yeşilırmak Basin. General Directorship of Soil-water publications, 241, Ankara-Turkey, 141 pp. (in Turkish).
Antonopoulos VZ, Papamichail DM and Mitsiou KA (2001). Statistical and trend analysis of water quality and quantity data for the Strymon River in Greece. Hydrology and Earth System Sciences, 5: 679-691.
Kalaycı S and Kahya E (1998). Detection of water quality trends in the rivers of the Susurluk Basin. Turkish Journal of Engineering and Environmental Science, 22: 503-514.
Kisi O and Ay M (2014). Comparison of Mann–Kendall and innovative trend method for water quality parameters of the Kizilirmak River, Turkey. Journal of Hydroloy, 513: 362-375.
Kurunc A, Yurekli, K and Cevik O (2005). Performance of two stochastic approaches for simulating river water quality and streamflow. Environmental Modeling & Software, 20: 1995-2000.
Munsuz N and Ünver I (1983). Waters of Turkey. University of Ankara, Agricultural Faculty Publications, 882, Ankara-Turkey, 392 pp. (in Turkish).
Sen PK (1968). Estimates of the regression coefficient based on Kendall's tau. Journal of the American Statistical Association, 63: 1379–1389.
Naddeo V, Scannapieco D, Zarra T and Belgiorno V (2013). River water quality assessment: Implementation of non-parametric tests for sampling frequency optimization. Land Use Policy, 30: 197-205.
Theil H (1950). A Rank Invariant Method of Linear and Polynomial Regression Analysis, part 3. Netherlands Akademie van Wettenschappen, Proceedings, 53, pp. 1397–1412.
Yenilmez F, Keskin F and Aksoy A (2011).Water quality trend analysis in Eymir Lake, Ankara. Physics and Chemistry of the Earth, 36: 135-140.
Yue S and Hashino M (2003). Long term trends of annual and monthly precipitation in Japan. Journal of the American Water Resources Association, 39: 587–596.
Zhai X, Xia J and Zhang Y (2014). Water quality variation in the highly disturbed Huai River Basin, China from 1994 to 2005 by multi-statistical analyses. Science of Total Environment, 496: 594-606.
Yurekli K (2015). Impact of climate variability on precipitation in the Upper Euphrates–Tigris Rivers Basin of Southeast Turkey. Atmospheric Research, 154: 25-38

Gaziosmanpaşa Üniversitesi Ziraat Fakültesi Dergisi-Cover

ISSN: 1300-2910
Yayın Aralığı: Yılda 3 Sayı
Başlangıç: 1985
Yayıncı: Tokat Gaziosmanpaşa Üniversitesi Ziraat Fakültesi Dergisi Yayın Ofisi