نتایج جستجو برای: basins of karun basin. then

تعداد نتایج: 21176987  

ژورنال: بوم شناسی آبزیان 2015

In this study fish in 8 Qanats in Taft and Mehriz townships of the Yazd Province were compared to specimens from Sirvan, Karun, Mond, Kor Rivers, Kerman and Namak basins. In the studied Qanats, Capoeta saadi and Cyprinion sp. were observed. The haplotypic diversity in Qanats was zero. Capoeta saadi haplotype observed in Qanats was similar to haplotype observed in the Kor basin. Cyprinion sp. ha...

Journal: :اکو هیدرولوژی 0
نوید دهقانی دانشجوی دکتری علوم و مهندسی آبخیزداری دانشگاه کاشان هدی قاسمیه استادیار، دانشکدۀ منابع طبیعی و علوم زمین، دانشگاه کاشان سیدجواد ساداتی نژاد دانشیار، دانشکدۀ علوم و فنون نوین، دانشگاه تهران خلیل قربانی دانشیار، دانشکدۀ مهندسی آب و خاک، دانشگاه علوم کشاورزی و منابع طبیعی گرگان

increasing greenhouse gases in recent decades and increasing its resulting temperature has causes the imbalance of the earth’s climate system and widespread climate changes in most regions of earth planet. development strategic policy in this area has been forced with a big challenge because of the need for water in the central region on the one hand and water resource constraints on the other ...

One of the important and effective factors in the destruction of natural resources is the flood phenomenon, identification of this phenomenon and effective parameters in flood occurrence in natural resources and catchment areas is necessary. The purpose of this study was to determine the flooding of sub-basins in Jafarabad basin in Ilam province. In this research, the Jafarabad basin in Ilam Pr...

Journal: :iranian journal of ichthyology 0
brian w coad research scientist, ichthyology section, canadian museum of nature, ottawa, canada.

the systematics, morphology, distribution, biology, economic importance and conservation of the spiny eel ( mastacembelus mastacembelus ) of iran are described, the species is illustrated, and a bibliography on this fish is provided. the single species is distributed in southern iranian basins, including karkheh, karun, jarrahi and helleh river basins, mostly part of the tigris river and persia...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده علوم انسانی 1389

rivers and runoff have always been of interest to human beings. in order to make use of the proper water resources, human societies, industrial and agricultural centers, etc. have usually been established near rivers. as the time goes on, these societies developed, and therefore water resources were extracted more and more. consequently, conditions of water quality of the rivers experienced rap...

Mohammad Reza Borna Mohammad Reza Pirestani,

Pre-sedimentation basins are among the most important elements of the conventional water treatment process. In pre-sedimentation basins, due to different velocity gradients, secondary and rotational flows are formed that will create short paths and increase dead and still flow zones as well as changes in the flow mixing. This will prevent laminar flow conditions for sedimentation and will reduc...

Journal: :مهندسی عمران فردوسی 0
علی ندافی سید محمود حسینی

due to increasing rate of flood risk throughout the world, including iran, it is necessary to identify and prioritize flood-contributing areas for flood control activities. in this study, a new approach on unit flood response method called “flood reduction method” was introduced which is applicable to prioritization of sub-basins for flood control activities. it was used to prioritize upstream ...

Journal: :مدیریت آب و آبیاری 0
فاطمه کاراندیش استادیار گروه مهندسی آب، دانشکده آب و خاک، دانشگاه زابل، زابل، ایران کیومرث ابراهیمی دانشیار گروه مهندسی آبیاری و آبادانی، دانشکدۀ مهندسی و فناوری کشاورزی، پردیس کشاورزی و منابع طبیعی، دانشگاه تهران، تهران - ایران. جهانگیر پرهمت دانشیار پژوهشکدۀ حفاظت خاک و آبخیزداری کشور، تهران - ایران.

the response of karoun basin in lumped and semi-distributed simulation were compared. also, the flood intensity of the sub-basins and the effects of physical parameters on flood hydrograph have been investigated. results demonstrated that there was no significant difference between the characteristics of flood hydrograph in lumped and semi-distributed simulation. also, results showed that the f...

شعبانی بازنشین, آرمان, عمادی, علیرضا, فضل اولی, رامین,

Flood is one of the natural hazards that its frequent occurrence has increased in the recent years and the damages of it, had affected apart of country in every year. Prioritization of sub basins has an important effect in watershed management. The purpose of prioritization of sub basins is offer a pattern for control and decrease flood hazards and evaluating the role of each sub basin in peak ...

بهرامی, شهرام , جمال آبادی, جواد ,

Study area, Danekhoshk anticline, is a typical growing anticline in Kermanshah province and is located in Folded Zagros structural Belt. The purpose of this research is to calculate the eroded rock volume and its relationship with tectonic in Danekhoshk anticline. To achieve the purpose of this study, at first, boundaries of 90 drainage basins on slopes of studied anticline were determined base...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید