نتایج جستجو برای: outflow measurements of qarehbaghestan hydrometric station

تعداد نتایج: 21190268  

ژورنال: علوم آب و خاک 2018

Statistical analysis and forecast discharge data play an important role in management and development of water systems. The most fundamental issues of statistical analysis and forecast discharge in Iran are lack of data in long term period and lack of stream flow data in gauging stations. Considering the issues mentioned in this study, we tried to estimate the daily data flow (runoff) of Santeh...

Journal: :E3S web of conferences 2021

Runoff is one of the most important components hydrological cycle, and having complete series runoff data essential for any modelling process. This study aims to estimate at Al-Jawadiyah hydrometric station using artificial neural networks. used only in addition values measured Al-Amiri on Syrian-Lebanese border. Many experiments were conducted a very large number networks trained with changing...

Journal: :اکو هیدرولوژی 0
ناصر عبادتی استادیار گروه زمین شناسی دانشگاه آزاد اسلامی واحد اسلامشهر، ایران محمد هوشمندزاده مدرس گروه مهندسی عمران دانشگاه آزاد اسلامی واحد شوشتر، ایران

the purpose of this study was to compare the dez river water quality in the dezful hydrometric station for human drinking water, industry and agriculture. this study by cross-sectional method used data from the period of 39 years. sampling was carried out on the basis of physical and chemical parameters were determined. the results with world health organization standards, charts schuler and ag...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید چمران اهواز - دانشکده مهندسی علوم آب 1393

drought is transient phenomenon , slow , repetitive and integral part of the climate of each region. drought begins with a substantial reduction in precipitation over the long-term average rainfall and over time, reduced soil moisture and surface and ground water resources will continue to decrease. this phenomenon is the most important in bakhtegan basin because of its importance in strategic ...

Journal: :محیط شناسی 0
علیرضا کرکوتی دانشجوی کارشناسی ارشد مهندسی عمران – محیط زیست، دانشکده محیط زیست دانشگاه تهران مهرداد نظریها استادیار گروه مدیریت سوانح طبیعی دانشکده محیط زیست دانشگاه تهران اکبر باغوند استادیار گروه مهندسی محیط زیست دانشکده محیط زیست دانشگاه تهران بابک جعفری سلیم دانشجوی کارشناسی ارشد مهندسی عمران – محیط زیست، دانشکده محیط زیست دانشگاه تهران عبدالرضا کرباسی استادیار گروه مهندسی محیط زیست، دانشکده محیط زیست دانشگاه تهران علی وثوق دانشجوی کارشناسی ارشد مهندسی عمران – محیط زیست، دانشکده محیط زیست دانشگاه تهران

computing or determining the amount of maximum flood debit in watershed is one of the main important parts of hydrological research in river improvement. in this regard it is necessary to be distinguished peak of flood flow and its hydrograph for favorable return period. this needs to have long time statistic and leminograph tools in study research area. in this study with the comparison of ava...

2012

Large scale climate signals and their teleconnections can influence hydro-meteorological variables on a local scale. Several extreme flow and timing measures, including high flow and low flow measures, from 62 hydrometric stations in Canada are investigated to detect possible linkages with several large scale climate indices. The streamflow data used in this study are derived from the Canadian ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز - دانشکده علوم 1391

in this thesis protic and aprotic ammonium-based ionic liquids were synthesized and their surface tensions were measured in the range of 298-373k. the protics are alkyl ammonium-based ils with the carboxylate (formate, acetate, propionate) anion and aprotics are quaternary ammonium-based ils with bis(trifluoromethylsulfonyl)imide anion. capillary rise method was used for surface tension measure...

 Quantitative assessment of landslide sedimentation in the ILAM dam Basin Information on the accurate volume of landslides and sedimentation in landslides is a research necessity, with the assumption that the bulk of sediment accumulated in the ILAM Dam (located between , E and , N) is related to the surface landslides of the basin. Although the role of landslides in erosion, sediment...

In the present study, the water quality of Silakhor River, located in Rahim Abad hydrometric station, was analyzed based on Boron, Iron, Nickel, Fluorine, Manganese, Chromium, Cadmium, Aluminum, Copper, Zinc and Lead pollution. The samples were collected from Silakhor River in Rahim Abad hydrometric station during a one-year period, from December 2012 to November 2013. In addition, metal index ...

ژورنال: آبخیزداری ایران 2022

Monitoring the quality parameters of the river is very important in the management of surface water resources. One of the effective methods in this field is entropy theory which has a very good capability in designing quality monitoring network. In this research, discrete entropy theory has been studied and monitored in order to qualitatively evaluate the temporal and spatial frequencies of the...

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