نتایج جستجو برای: mann kendall
تعداد نتایج: 22938 فیلتر نتایج به سال:
به لحاظ اهمیت آب های سطحی و کاربرد آن ها در صنایع مختلف، کشاورزی، مصارف شرب و غیره، نیاز است خشکسالی رودخانه ای و یا هیدرولوژیکی به دقت بررسی گردد. بدین منظور شاخص های مختلفی ارائه گردیده است که در میان آن ها شاخص خشکسالی هیدرولوژیکی sdi، تنها با به کارگیری داده های دبی رودخانه می تواند تخمین خوبی از خشکسالی هیدرولوژیکی را ارائه دهد. در این تحقیق با استفاده از داده های دبی روزانه 18 ایستگاه موج...
Due to global warming, and its resulting changes in the frequency and amount of precipitation and temperature, there has been a great concern on climate change impacts by the scientific community. This study focuses on trend analysis of annual and seasonal rainfall (P), maximum temperature (Tmax) and minimum temperature (Tmin) time series from seven meteorological stations in Gorgranrood rive...
Buharlaşma miktarındaki değişimin doğru bilinmesi, su kaynaklarının yönetimi, ile ilgili yapıların tasarlanması ve eylem planlarının hazırlanması için önemlidir. Bu çalışmada, Türkiye’nin önemli tarımsal alanlarını barındıran Güneydoğu Anadolu Bölgesi’ndeki Gaziantep, Şanlıurfa Mardin istasyonlarına ait aylık toplam tava buharlaşması verilerinin trendleri, parametrik olmayan Mann-Kendall (MK) t...
Bu çal??mada Ye?il?rmak havzas?nda bulunan 7 adet ak?m gözlem istasyonuna ait ayl?k ve y?ll?k zaman periyodundaki kurakl?k indekslerinin (AK?) trend analizi yap?lm??t?r. Kurakl?k trendlerinin ortaya ç?kar?lmas?nda Mann-Kendall (MK), Yenilikçi ?en Yöntemi (Y?Y) Thiel Yakla??m? (T?Y) kullan?lm??t?r. ?çsel ba??ml?l??? AK? serilerine MK testi uygulanmadan önce trend-free pre-whitening (ön ar?nd?rma...
in this study, long-term trends and abrupt changes of hydro-climatic variables was investigated in the observed period 1971-2000 for aidoghmoush basin using mann-kendall nonparametric test and cumulative curve of climatic variables-runoff, respectively. results show decrease trends for rainfall and runoff and increase trend for temperature by the mann-kendall test with a confidence level of 99%...
This study was an analytical research across 84 meteorological stations, performed in the Mighan sub-basin over a fifty-year study period (1961–2011).This research seeks to answer the basic question of how declining streamflow, increasing temperatures, and fluctuation in precipitation have impacted water resource allocation in the Mighan sub-basin. The research method is analytical based on Man...
Temperature and rainfall are important meteorological variables in connection with changes the climate. Analyzing temperature is a necessary first step determining how climate change will affect us. Evaluating would accessibility of water environment. The main focus current study on shifting patterns Kharun Watershed, Chhattisgarh. Mann-Kendall (MK) test Sen's slope (SS) method used this to exa...
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