نتایج جستجو برای: short duration rainfall

تعداد نتایج: 648020  

ژورنال: علوم آب و خاک 2018
مظلوم علی آبادی, یونس, واعظی, علی رضا,

Water loss and nutrients loss are one of the important signs of natural resource degradation in the catchments. The amount of loss of these resources is affected by several factors including the characteristics of rainfall. In this study, the data of stream discharge (Q), total dissolve solids (TDS), and total nutrient loss ratio (NR) along with rainfall characteristics were analyzed for the ev...

Journal: :international journal of environmental research 2011
a. kavian y. fathollah nejad m. habibnejad k. soleimani

there is a need to analyze and map rainfall erosivity to assess soil erosion at the regional scale. the objectives of this study were to develop a regional model to estimate seasonal erosivity from seasonal rainfall data and to study temporal and spatial distribution of rainfall erosivity for the gorganrood drainage basin in the northeast of iran. six gauging stations with a high temporal reso...

2012
G. Bruni J.A.E. ten Veldhuis T. Otto H. Leijnse

Cities’ vulnerability to extreme rainfall is increasing due to urbanization, increase of imperviousness, implementation of complex network of infrastructures, and alteration of precipitation patterns as an effect of climate change. More severe and more frequent storms are expected, having a strong impact in urban catchments, which will become more prone to floods. Because of the short duration ...

1999
C. T. Andersen I. D. L. Foster C. J. Pratt

Permeable pavements and similar stormwater control devices have not been exploited in the UK, in part because their adoption has been hindered by a lack of detailed knowledge of their hydrological performance. This paper describes a research programme that produced detailed information on the hydrological behaviour of a car park surface. The study involved the construction of full-scale permeab...

2016
Nasser Najibi Naresh Devineni Mengqian Lu

A comprehensive framework is developed to assess the flood types, their spatiotemporal characteristics and causes based on the rainfall statistics, antecedent flow conditions, and atmospheric teleconnections. The Missouri River Basin (MRB) is used as a case study for the application of the framework. Floods are defined using the multivariate characteristics of annual peak, volume, duration, and...

2004
R F Keim A E Skaugset T E Link A Iroumé

Although it is well known that forest canopies reduce the amount and intensity of precipitation at the ground surface, little is known about how canopy interception modifies extreme events. This research investigated the effects of forest cover on intensity-duration-frequency relationships using a stochastic model to extrapolate measured rainfall and throughfall to throughfall expected during e...

2001
Pierre Y. Julien

Transforms reduce the distributions of surface-runoff and sediment-transport variables to nearexponential distributions typical of rainfall duration and intensity. Two transform parameters are determined from field measurements using either a graphical method or the method of moments. The transforms were tested on both small experimental plots and very large watersheds for the distributions of ...

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