نتایج جستجو برای: daily stream flow

تعداد نتایج: 721311  

2003
David W. Neumann Balaji Rajagopalan Edith A. Zagona

An empirical model is developed to predict daily maximum stream temperatures for the summer period. The model is created using a stepwise linear regression procedure to select significant predictors. The predictive model includes a prediction confidence interval to quantify the uncertainty. The methodology is applied to the Truckee River in California and Nevada. The stepwise procedure selects ...

Journal: :environmental resources research 2013
shahin moradi pour abdolreza bahremand hossein zeinivand ali najafinejad

water changes information in the hydrological system, in time and space, as an environmental issue takes heed of managers and decision makers in watershed management and river engineering, which can be addressed by using spatially distributed modeling. in this study simulation of water balance components in taleghan mountainous watershed is performed using the spatially distributed hydrological...

In this article, stream flow effectivness is based on hydraulic network studied in the shell-side of a shell and tube heat exchange as a case study. For an appropriate heat exchangers rating design to meet a specified duty, it's better to consider each stream flow separately. Using the hydraulic network principals, a set of the correlations for calculating different stream flow rates in the cro...

Journal: Desert 2015

Modeling of stream flow–suspended sediment relationship is one of the most studied topics in hydrology due to itsessential application to water resources management. Recently, artificial intelligence has gained much popularity owing toits application in calibrating the nonlinear relationships inherent in the stream flow–suspended sediment relationship. Thisstudy made us of adaptive neuro-fuzzy ...

Water changes information in the hydrological system, in time and space, as an environmental issue takes heed of managers and decision makers in watershed management and river engineering, which can be addressed by using spatially distributed modeling. In this study simulation of water balance components in Taleghan mountainous watershed is performed using the spatially distributed hydrological...

Elham Sirjani Majid Mahmoodabadi

Soil detachment is known as an important process in soil erosion and its quantification is necessary to establish a basic understanding of erosion. This study was carried out to find the best flow erosivity indicator(s) for predicting detachment rate at low slopes. For this purpose, 12 experiments including 6 flow discharges (75, 100, 125, 150, 175 and 200 ml/s) and 2 slope gradients (1.5 and 2...

ژورنال: علوم آب و خاک 2016
خوش روش, مجتبی , عابدی کوپایی, جهانگیر , نیکزاد طهرانی, اسماعیل ,

During the past few decades, the southern part of the Caspian Sea has more frequently experienced extreme climatic events such as drought and flood. Trend analysis of hydro-climatic variables was conducted using non-parametric Mann-Kendall test and regression test for Neka basin in the north of Iran.       Trends of precipitation and stream flow characteristics including maximum flow, mean flow...

Journal: :مرتع و آبخیزداری 0
حیدر ابراهیمی دانشجوی دکتری رشته علوم و مهندسی آبخیزداری، دانشگاه کاشان، ایران علیرضا مقدم نیا دانشیار گروه احیای مناطق خشک و کوهستانی، دانشکده منابع طبیعی، دانشگاه تهران، ایران حاجی کریمی دانشیار گروه مرتع و آبخیزداری، دانشکده کشاورزی، دانشگاه ایلام، ایران

the runoff simulation in a watershed provides insight on the processes affecting runoff generation and the stream flow characteristics like spatial and temporal variability of stream flow. this insight helps managers and planners in informed decision-makings on water resources management and planning. the objective of this study is to compare the performances of the complex swat model and the s...

Journal: : 2022

Bu çalışmada Büyük Melen Çayı (Düzce) günlük akım değerleri ile toplam yağışlar ve yağış şiddeti arasındaki ilişkilerin analiz edilmesi amaçlanmıştır. Gerek İstanbul’un içme suyu ihtiyacını karşılamadaki önemi gerekse 2019 yılında olduğu gibi sel/taşkın felaketi oluşturma potansiyeli değerlendirdiğinde, Çayı’nın değerlerindeki değişimlerin yararlı görülmüştür. Çalışmada veri seti olarak Akçakoc...

ژورنال: علوم آب و خاک 2000
اسلامیان, سیدسعید , سلیمی, والی , چاوشی بروجنی, ستار ,

Peak discharge is one of the basic parameters in the design of hydraulic structures. There are various methods for peak discharge determination. Regional flood frequency analysis is based on physical, climatological and hydrological characteristics of basins. The objective of this study is to examine different models for the estimation of quantiles for some catchments in western Iran (namely: G...

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