Kızılırmak Nehrinde Bazı İstasyonlardaki Akımların Trend Analizi

Year 2017, Volume: 28 Issue: 2, 7779 - 7794, 01.04.2017

Murat Ay , Özgür Kişi

https://doi.org/10.18400/tekderg.304034

Cited By: 9

Abstract

Bu çalışmada, Şen (2012) ve Şen (2015) tarafından
önerilen oldukça yeni bir trend metodu, Kızılırmak havzasından seçilen
Şefaatli, Kuyluş, Salur Köprüsü ve Bulakbaşı akım gözlem istasyonlarında aylık
olarak ölçülen akım verilerine uygulanmıştır. Aynı verilere Mann-Kendall trend
testi de uygulanarak sonuçlar tartışılmıştır. Mann-Kendall testine göre %95
güven aralığında Kuylus ve Bulakbaşı istasyonlarında trend olmayıp Şefaatli ve
Salur Köprüsü istasyonlarında azalan bir trend görülmüştür. Şen trend testine
göre ise her bir istasyon için düşük, orta ve yüksek akım değerlerinde farklı
trendler gözlenmiştir. Neticede, yeni önerilen Şen metodunda, özellikle görsel
olarak veri değerlendirme aşamasında tüm aralıklardaki trendlerin
yorumlanabilmesi önemli bir avantaj olarak görülmüştür.  

Keywords

Akım, Mann-Kendall test, şen trend testi, Türkiye

Trend Analysis of Streamflows at Some Gauging Stations Over the Kizilirmak River

Abstract

In this study, a
new trend method recently proposed by Şen is used for monthly streamflow data
of four different stations, Sefaatli, Kuylus, Salur Bridge and Bulakbasi,
selected from the Kizilirmak Basin in Turkey. The Mann-Kendall trend test is also
applied to the same data, and the results are discussed. According to the
Mann-Kendall test, a significantly decreasing trend is found for the Sefaatli
and Salur Bridge stations while there is no trend in the Kuylus and Bulakbasi
stations at a significant level of 95%.
Different trends are found for the low, medium and high streamflows of each
station in view of the Şen trend test. As a
result, it can be said that the proposed new method of Şen can identify the trends
of low, medium, and high streamflows.

Keywords

Streamflow, Mann-Kendall test, şen trend test, Turkey

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