نتایج جستجو برای: using mann â kendall graphical

تعداد نتایج: 3433541  

Journal: Desert 2019

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...

Journal: :Journal of Geoscience and Environment Protection 2023

Rainfall and temperature variability analysis is important for researchers policy formulators in making critical decisions on water availability use communities. The Western Sahel, which comprises Mali considered as one of the vulnerable regions to climate change, also encountered challenges climatic shocks such flood drought. This research therefore sought investigate change effects hydrologic...

2013
Shiulee Chakraborty R. P. Pandey

In this study, ETo was calculated using FAO-56 Penman Monteith method. Lag-1 autocorrelation coefficient was performed to detect the presence of serially correlation in data series. Mann-Kendall (MK) or Modified Mann Kendall (MMK) and Spearman’s rho test were applied to detect the trend in annual and monthly ETo at 8 districts over 49 years (1960–2008) in the Soenath river basin, Chhattisgarh (...

Journal: :محیط شناسی 0
محمدجواد امیری استادیار گروه برنامه ریزی و مدیریت و آموزش محیط زیست، دانشکدۀ محیط زیست، دانشگاه تهران، ایران، عبدالرضا کرباسی دانشیار گروه مهندسی محیط زیست، دانشکدۀ محیط زیست، دانشگاه تهران، ایران محمود ذوقی دانشجوی کارشناسی ارشد گروه برنامه ریزی و مدیریت و آموزش محیط زیست، دانشکدۀ محیط زیست، دانشگاه تهران، ایران مهدیس سادات دانشجوی کارشناسی ارشد گروه برنامه ریزی و مدیریت و آموزش محیط زیست، دانشکدۀ محیط زیست، دانشگاه تهران، ایران،

introduction: climate change is one of the most significant challenges in sustainable development that has negative effects on land and marine ecosystems. this phenomenon leads to imbalances that cause effects including hydrological changes, increased soil erosion, increased runoffs and reduced groundwater aquifer feeding, etc. effects of climate changes over the past decade have significantly ...

2002
Robin T. Clarke

The widely-used hydrological procedures for calculating events with T-year return periods from data that follow a Gumbel distribution assume that the data sequence from which the Gumbel distribution is fitted remains stationary in time. If non-stationarity is suspected, whether as a consequence of changes in land-use practices or climate, it is common practice to test the significance of trend ...

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