نتایج جستجو برای: runoff model

تعداد نتایج: 2114066  

2009
Petr MÁCA Paul TORFS

The rainfall input is one of the main factors influencing the magnitude of the runoff response during a flood event. Its temporal and spatial distribution significantly contributes to the formation of hydrograph shape, peak discharge and flood volume. a novel approach to the evaluation of the role of the temporal rainfall pattern of hydrograph is presented in this contribution. The methodology ...

2003
Paul James Smith Toshiharu Kojiri

A framework for short-term probabilistic forecasting of watershed flood stage conditions using a distributed rainfall-runoff model is proposed. A stochastic rainfall pattern simulation model capable of generating input for a distributed rainfall-runoff model is developed. Generation of rainfall patterns over a 6-hour period is achieved using a translation vector rainfall forecasting process mod...

Journal: :اکو هیدرولوژی 0
هادی نظری پویا دانشجوی دکتری جغرافیا اقلیم‏شناسی، دانشگاه آزاد اسلامی واحد علوم تحقیقات تهران پرویز کردوانی استاد، دانشگاه آزاد اسلامی واحد علوم تحقیقات تهران، ایران عبدالرضا فرجی راد استاد، دانشگاه آزاد اسلامی واحد علوم تحقیقات تهران، ایران

climate change is one of the most important factors that will affect different parts of human life on earth and will be adverse effects on environmental resources, economic, social and especially water resources, with changes in rainfall and timing of runoff amount.one of the strategies to mitigate the effects of climate change is to assess its effects on precipitation, temperature and runoff i...

2002
G. DROGUE T. LEVIANDIER B. HINGRAY J. HUMBERT

The Hydrological Recursive Model (HRM), a conceptual rainfall-runoff model, was applied for local and regional simulation of hourly discharges in the transnational Alzette River basin (Luxembourg-France-Belgium). The model was calibrated for a range of various sub-basins with a view to analysing its ability to reproduce the variability of basin responses during flood generation. The regionaliza...

Journal: :Environmental Modelling and Software 2007
W. C. Boughton

A 64-year data set of daily rainfall and runoff, and average monthly potential evapotranspiration (PET) was split into subsets of 2, 5, 10, 20 and 30 years. Each subset was used to calibrate the AWBM daily rainfall-runoff model. Each subset calibration was then used to estimate runoff from the 64 years of rainfall and PET data. The ratios of calculated to actual total runoff were used to determ...

Journal: :ecopersia 0
samane mahzari former m.sc student, department of soil science, gorgan university of agricultural sciences and natural resources. gorgan, iran farshad kiani assistant professor, department of soil science, gorgan university of agricultural sciences and natural resources. gorgan, iran mojgansadat azimi assistant professor, departmentof range and watershed management, gorgan university of agricultural sciences and natural resources, gorgan, iran farhad khormali professor, department of soil science, gorgan university of agricultural sciences and natural resources. gorgan, iran

the adequacy of the swat model in the estimation of runoff, sediment yield and nitrate loss in the gorganrood watershed was tested, using the existing spatial database as the primary data. the model was then executed for a 31-years’ time period. in combination with the swat model, the sequential uncertainty fitting program (swat-cup and sufi-2) was added used to calibrate and validate a hydrolo...

Journal: :Hydrology and Earth System Sciences 2007

Journal: :Journal of Korea Water Resources Association 2005

Journal: :JSW 2014
Xiuli Sang Song Gao Jian-Xin Xu Hua Wang Kun Zhang

This paper found rainfall and runoff was in a state of chaos in Poincare section and developed a method for constructing a relationship model of rainfall-runoff based on time series analysis technology. It aimed at estimating and discussing the relationship of rainfall-runoff time series by Euclidean distance (n>2). A linear model was well built to illustrate time-correlation characteristics wi...

1999
Jan Seibert

The HBV model, a conceptual rainfall-runoff model, was applied to 11 catchments within the NOPEX area. The catchment areas ranged from 7 to 950 km with between 41 and 87% covered by forest. The aim was to relate the different model parameters to physical catchment characteristics. Such relationships would allow simulating runoff from ungauged catchments and could be used to discuss the physical...

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