نتایج جستجو برای: rainfallsimulator and runoff

تعداد نتایج: 16829761  

2005
L. Siriwardena

Rainfall-runoff models are used for various applications, ranging from the estimation of catchment water yield to the estimation of land use and climate change impacts on runoff characteristics. Most rainfall-runoff models can be calibrated successfully to reproduce the recorded runoff, however it is difficult to determine appropriate parameter values to use for modelling runoff in an ungauged ...

2002
J. WILK D. A. HUGHES

A monthly rainfall-runoff model was calibrated for a large tropical catchment in southern India. Various land-use and climatic change scenarios were tested to assess their effects on mean annual runoff and assured water yield at the Bhavanisagar Reservoir in Tamil Nadu, India. The largest increase in runoff (19%) came from converting forest and savanna (the indigenous control scenario) to agric...

Journal: :Journal of environmental quality 2003
Peter J A Kleinman Andrew N Sharpley

Concern over eutrophication has directed attention to manure management effects on phosphorus (P) loss in runoff. This study evaluates the effects of manure application rate and type on runoff P concentrations from two, acidic agricultural soils over successive runoff events. Soils were packed into 100- x 20- x 5-cm runoff boxes and broadcast with three manures (dairy, Bos taurus, layer poultry...

2008
M. D. Leh I. Chaubey J. Murdoch J. V. Brahana B. E. Haggard

The identification of runoff contributing areas would provide the ideal focal points for water quality monitoring and Best Management Practice (BMP) implementation. The objective of this study was to use a field-scale approach to delineate critical runoff source areas and to determine the runoff mechanisms in a pasture hillslope of the Ozark Highlands in the USA. Three adjacent hillslope plots ...

Journal: Desert 2014

This study aims to evaluate effects of two downscaling methods; change-factor and statistical downscaling on therunoff of the Azam-Harat River located at Yazd province (with an arid climate) of Iran, under the A2 emission scenariofor the period of 2010-2039. For this purpose, CGCM3-AR4 model; a rainfall-runoff conceptual model, IHACRES; twodownscaling models, Change Factor and LARS-WG were appl...

2004
Robert Pitt

Most people know that urban runoff is a problem. Few understand just how harmful it can be for rivers and streams. To secure better watershed planning urban runoff control, we must first convince the public and its officials that they are needed. We need to show clearly and convincingly both the nature and the magnitude of the water quality and quantity problems that poorly planned and managed ...

2015
Tigist Y. Tebebu Tammo S. Steenhuis Dessalegn C. Dagnew Christian D. Guzman Haimanote K. Bayabil Assefa D. Zegeye Amy S. Collick Simon Langan Charlotte MacAlister Eddy J. Langendoen Birru Yitaferu Seifu A. Tilahun

Citation: Tebebu TY, Steenhuis TS, Dagnew DC, Guzman CD, Bayabil HK, Zegeye AD, Collick AS, Langan S, MacAlister C, Langendoen EJ, Yitaferu B and Tilahun SA (2015) Improving efficacy of landscape interventions in the (sub) humid Ethiopian highlands by improved understanding of runoff processes. Front. Earth Sci. 3:49. doi: 10.3389/feart.2015.00049 Improving efficacy of landscape interventions i...

2012
JOHN SHEN Thomas B. Nolan

The analog technique is applied to the analysis of flood runoff. A quasi-linear analog model has been developed for simulating the runoff-producing characteristics of a drainage system. Where storage is linear a unique relationship correlating the inflow and outflow peaks is derived. A technique for synthesizing flood-frequency distribution is also proposed, whereby the effects of a linearor a ...

2013
Mohamed Boutouil

Pervious concrete is a green alternative to conventional pavements with minimal fine aggregate and a high void content. Pervious concrete allows water to infiltrate through the pavement, thereby reducing the runoff and the requirement for stormwater management systems. Seashell By-Products (SBP) are produced in an important quantity in France and are considered as waste. This work investigated ...

2017
V. Sridhar Kenneth Hubbard David A. Wedin

In this paper, we investigate soil moisture, evapotranspiration and other major water balance components over six sites in the Sand Hills of Nebraska during a 6-year period (1998-2003) using a hydrological model. We simulate water budget components including root zone soil moisture and found that model predictions of soil moisture compare reasonably well with observations for these sites. In th...

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