نتایج جستجو برای: increases the runoff

تعداد نتایج: 16077051  

اوسطی, خالد, هادی قورقی, جبار,

Soil  erosion  as a  one  of  the  biggest  environmental  problems  worldwide, is threatening  both ecosystem health and  food security. This case study conducted in Khamsan paired watersheds aimed to compare runoff volume and sediment yields from 51 natural rainfall events on 18 USLE’s standard plots, where they had installed on the different conditions in the term of enclosure and aspect. Fa...

2013
Harry Virahsawmy Michael Stewardson Geoff Vietz Tim D. Fletcher

Raingardens are becoming an increasingly popular technology for urban stormwater treatment, however, their hydraulic performance is known to reduce due to clogging from deposition of finegrained sediments on the surface. This impacts on their capacity to treat urban runoff. It has been recently hypothesised that plants can help to mitigate the effect of surface clogging on infiltration. A conce...

Journal: :آب و خاک 0
حمید زارع ابیانه مریم بیات ورکشی

abstract from longley, the various equations for determining the runoff to water management are presented by the researchers that are widely used in hydrologic sciences. in this study by using observational data, was evaluated empirical, artificial neural network (ann) and ca-active neuro-fuzzy inference system (canfis) models in estimation of runoff. for this purpose, by using climatic and phy...

Journal: :Remote Sensing 2014
Webster Gumindoga T. H. M. Rientjes Munyaradzi Davis Shekede Donald Tendayi Rwasoka Innocent Nhapi Alemseged Tamiru Haile

By increased rural-urban migration in many African countries, the assessment of changes in catchment hydrologic responses due to urbanization is critical for water resource planning and management. This paper assesses hydrological impacts of urbanization on two medium-sized Zimbabwean catchments (Mukuvisi and Marimba) for which changes in land cover by urbanization were determined through Lands...

2009
Oleg Golubitsky Stephen M. Watt

A succinct representation of handwritten symbol curves can be obtained by computing truncated Legendre-Sobolev expansions of the coordinate functions. With this representation, symbol classes are well linearly separable, which yields fast and robust classification algorithms based on linear support vector machines. We have found that the presence of different variants of a symbol in the same cl...

2014
Fei Wang Guangju Zhao Xingmin Mu Peng Gao Wenyi Sun Clelia Luisa Marti

Runoff and sediment loads have exhibited significant changes over the past six decades in the Yellow River Basin, China. The current study evaluates the changing trends and regime shifts in runoff and sediment loads at both the annual and monthly time scales. The associated spatial and temporal variations are analyzed by a sequential t-test analysis of the regime shifts (STARS) approach and the...

Journal: :Marine pollution bulletin 2012
Frederieke J Kroon Petra M Kuhnert Brent L Henderson Scott N Wilkinson Anne Kinsey-Henderson Brett Abbott Jon E Brodie Ryan D R Turner

Degradation of coastal ecosystems in the Great Barrier Reef (GBR) lagoon, Australia, has been linked with increased land-based runoff of suspended solids, nutrients and pesticides since European settlement. This study estimated the increase in river loads for all 35 GBR basins, using the best available estimates of pre-European and current loads derived from catchment modelling and monitoring. ...

2007
Manfred Mudelsee

[1] Long memory is a hydrological property that can lead to prolonged droughts or the temporal clustering of extreme floods in a river. Analyses of 28 long (up to 145 years), continuous instrumental runoff series from six European, American, and African rivers reveal that this effect increases downstream. Simulations reproduce the increase qualitatively and show that a river network aggregates ...

Journal: :Remote Sensing 2022

Forest roads significantly affect sediment connectivity in mountainous catchments by contributing to the production of and disturbing confluence sediment-loaded runoff. This study considered forest as pathways sinks runoff understand effects on characteristics a catchment using scenario simulation. In order determine contribution spatial relationship between influencing factors, this utilized b...

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