kızılırmak basin
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2019 ◽  
Vol 4 (3) ◽  
pp. 454-459
Author(s):  
Necmiye Minarecioğlu ◽  
Hatice Çıtakoğlu


2017 ◽  
Vol 2017 ◽  
pp. 1-16
Author(s):  
Shatha H. D. Al-Zakar ◽  
N. Şarlak ◽  
Omar M. A. Mahmood Agha

This study utilizes a recent nonparametric disaggregation K-nearest neighbor (KNN) model, to resample monthly flows depending on annual flows at different sites. Both temporal and spatial approaches will be followed in this model while preserving the distributional statistics of the observed data. This model assumes that a set of aggregated annual streamflows at a key station is available and desired for disaggregation to a corresponding series of streamflow at key station (temporal disaggregation) as well as at tributary stations (spatial disaggregation). The model is applied to the annual streamflow data of particular stations in the Kızılırmak Basin, which is exposed to drought periods during the years (1970–1974 and 1994-1995). The aim of this study is to find the possibilities of using the nonparametric approaches as generators of monthly flows, with emphasis on the ability to reproduce the statistics related to drought and storage analysis for the selected stations in Turkey. The results show that the spatial disaggregation approach has the ability to reproduce the historical data better than the temporal approach for the tested sites and provides a variety of generated monthly sequence flows that can then be utilized to analyze the performance of the water resources planning system.



Author(s):  
Ü. Köylü ◽  
A. Geymen

Dams block flow of rivers and cause artificial water reservoirs which affect the climate and the land use characteristics of the river basin. In this research, the effect of the huge water body obtained by Yamula Dam in Kızılırmak Basin is analysed over surrounding spatial’s land use and climate change. Mann Kendal non-parametrical statistical test, Theil&Sen Slope method, Inverse Distance Weighting (IDW), Soil Conservation Service-Curve Number (SCS-CN) methods are integrated for spatial and temporal analysis of the research area. For this research humidity, temperature, wind speed, precipitation observations which are collected in 16 weather stations nearby Kızılırmak Basin are analyzed. After that these statistical information is combined by GIS data over years. An application is developed for GIS analysis in Python Programming Language and integrated with ArcGIS software. Statistical analysis calculated in the R Project for Statistical Computing and integrated with developed application. According to the statistical analysis of extracted time series of meteorological parameters, statistical significant spatiotemporal trends are observed for climate change and land use characteristics. In this study, we indicated the effect of big dams in local climate on semi-arid Yamula Dam.



2013 ◽  
Vol 51 (7-9) ◽  
pp. 1533-1542 ◽  
Author(s):  
S.Ç. Ayaz ◽  
Ö. Aktaş ◽  
S. Dağlı ◽  
C. Aydöner ◽  
E. Atasoy Aytış ◽  
...  




2011 ◽  
Vol 59 (2) ◽  
pp. 787-800 ◽  
Author(s):  
Evren Seyrek ◽  
Hasan Tosun


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