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تعداد نتایج: 821688 فیلتر نتایج به سال:
Climatic parameters in time and space scales of change are for many reasons of Changes and how they should be based on observations using a statistical method to be determined. Analysis of the most widely used statistical methods that assess potential climate change on hydrological time series, such series of precipitation, temperature and flow rate used. This study of 11 synoptic,rain gage and...
Environments with a climatic characteristic of semi-aridity exhibit high rainfall variability, increasing significantly as the climate changes. In this study, concentration and Spatio-temporal trends in annual seasonal (November to March) Botswana were analyzed. The satellite data (1958-2019) is obtained from Southern African Science Service Centre for Climate Change Adaptive Land Management To...
Abstract The identification of hydro-meteorological trends is essential for analyzing climate change and river discharge at the watershed level. Ajora-Woybo in Ethiopia was studied long-term rainfall, temperature, annual, monthly, seasonal time scales. rainfall temperature data extend 1990 to 2020, whereas span from1990 2015. Pettitt Standard Normal Homogeneity Test (SNHT) tests were used deter...
As a Semi-arid country, Burkina Faso is highly vulnerable to climate-related disasters such as drought and flood. Analyzing signature therefore key factor in advocating climate change adaptation at the local scale. In this study, Spatiotemporal trends of were conducted for period 1960–2021 within Massili Basin using standardized precipitation evapotranspiration index (SPEI) package R. The non-p...
there are some barriers for rangers to take part in range plan projects andevaluation. their participation is very useful for range managers to plan and provide solutionsfor solving problems. this study aims at comparing barriers of participating from rangers andexperts point of view in lar moor rangelands, tehran, iran. in this research, data werecollected based on documentation-library and fi...
structural steel sections are mainly used in beams and columns of building frames. iran national steel industrialgroup is among the oldest and largest producers of beams in iran. it has two beam production lines, namely line630 and line 650. in this study, the mechanical properties of manufactured beams in these production lines werecompared. based on the t-test results, the elongation is signi...
This study aims to investigate the trend of water-level changes in lakes (Lake Tuz and Lake Bey?ehir) sinkholes (Timra? K?zören) Konya Closed Basin located Turkey. Water-level these were investigated along with meteorological parameters (precipitation, temperature, evaporation) groundwater trends that indicate climate region. Several statistical tests can be used determine significance hydrolog...
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