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Estimation of Discharge in Rivers by Different Artificial Neural N...

By: A. Zeroual; A. A. Assani; M. Meddi

Description: Higher National School of Hydraulics, Blida, R.L GEE, Algeria. No abstract available.

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Assessing the Applicability of the Revised Universal Soil Loss Equ...

By: M. Kelly-quinn; J. O'Sullivan; E. Conroy; J. Harrington; A. Rymszewicz; E. Mockler; J. Turner; D. Lawler; M. Bruen

Description: UCD Dooge Centre for Water Resources Research, School of Civil, Structural and Environmental Engineering, University College Dublin, Ireland. Elevated suspended sediment concentrations in fluvial environments have important implications for system ecology and even small concentrations may have serious consequences for sensitive ecosystems or organisms, such as freshwater pearl mussels (Margaritifera margaritifera). Informed decision making is therefor...

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Simulation of Soil Moisture for Typical Plain Region Using the Var...

By: G. Lu; Y. Mao; J. Zhang; Z. Wu

Description: National Engineering Research Center of Water Resources Efficient Utilization and Engineering Safety, College of Hydrology and Water Resources, Hohai University, No.1 Xikang Road, Nanjing, Jiangsu Province, China. Droughts have a severe impact on the development of the social economy in developed plain areas. Soil moisture is a good index, it can reasonably reflect changes in drought. In this study, Jiangsu province in the Yangtze River Plain was selected as...

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Physically-based Distributed Modelling of River Runoff Under Chang...

By: E. Antokhina; V. Zhuk; Yu. Motovilov; G. Surkova; I. Krylenko

Description: Water Problems Institute, Russian Academy of Sciences, Gubkin st. 3, 119333, Moscow, Russia. Physically-based distributed modelling under changing climatic conditions has been carried out for the Northern Dvina River basin using the ECOMAG (ECOlogical Model for Applied Geophysics). The parameters of the model have been adjusted through calibration against runoff hydrographs observed for the period 2000–2009. Validation of the model has been performed for the...

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Experimental Study on the Spatial Variation of Hydrodynamic Parame...

By: X. Li; X. Wei

Description: College of Earth and Environmental Sciences, Lanzhou University, Lanzhou, Gansu Province, 730000, China. On the Chinese Loess Plateau many hydraulic parameters related to soil erosion are highly variable and often cross-correlated. Hillslope-gully side erosion systems are widespread on the Loess Plateau, but the quantification between the hydraulic parameters is still unknown for the system. A constant headwater scouring experiment in the laboratory was perf...

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Evaluating Extreme Flood Characteristics of Small Mountainous Basi...

By: M. N. Kruchin; T. A. Vinogradova; L. S. Lebedeva; N. V. Volkova; O. M. Semenova

Description: Melnikov Permafrost Institute, Yakutsk, Russia. The probability of heavy rains and river floods is expected to increase with time in the Northern Caucasus region. Densely populated areas in the valleys of small mountainous watersheds already frequently suffer from catastrophic peak floods caused by intense rains at higher elevations. This study aimed at assessing the flood characteristics of several small basins in the piedmont area of the Caucasus Moun...

Bitukov, N. A.: Ecology of mountainous forests of Black Sea region, SIMBiP, FGU NIIgorkesecol, Sochi, 1–292, 2007.; Semenov, V. A.: Climate-related changes in hazardous and adverse hydrological events in the Russian rivers, Russ. Meteorol. Hydrol., 36, 124–129, 2011.; Rogger, M., Kohl, B., Pirkl, H., Viglione, A., Komma, J., Kirnbauer, R., Merz, R., and Blöschl, G.: Runoff models and flood frequency statistics for design flood estimation in Austria – Do they tell a consi...

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On Correlation Between Urban Development, Land Subsidence and Floo...

By: I. R. R. Wibowo; H. Andreas; I. Gumilar; H. Z. Abidin

Description: Geodesy Research Group, Institute of Technology Bandung, Jl. Ganesha 10, Bandung, Indonesia. Jakarta is the capital city of Indonesia with a population of about 10.2 million people, inhabiting an area of about 660 square-km. It is located within a deltaic plain and passes by 13 natural and artificial rivers. In the last three decades, urban development of Jakarta has grown very rapidly in the sectors of industry, trade, transportation, real estate and ma...

Abidin, H. Z., Djaja, R., Darmawan, D., Hadi, S., Akbar, A., Rajiyowiryono, H., Sudibyo, Y., Meilano, I., Kusuma, M. A., Kahar, J., and Subarya, C.: Land Subsidence of Jakarta (Indonesia) and its Geodetic-Based Monitoring System, Natural Hazards, J. Int. Soc. Prevent. Mitig. Nat. Hazards, 23, 365–387, March, 2001.; Abidin, H. Z., Djaja, R., Andreas, H., Gamal, M., Hirose, K., and Maruyama, Y.: Capabilities and Constraints of Geodetic Techniques for Monitoring Land Subsid...

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Influence of Solar Activity on Global Large Rivers Runoff Trends :...

By: B. Nurtaev

Description: Solterra Science, Kapfenbergerstr.17, Frechen, 50226 Germany. No abstract available.

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Recent Changes in Sediment Redistribution in the Upper Parts of th...

By: L. F. Litvin; M. V. Kumani; V. N. Golosov; I. I. Rysin; O. P. Yermolaev; A. P. Dvinskikh

Description: Kazan Federal University, Kremlevskayast., 18, Kazan, 420008, Russia. Quantitative assessments of soil loss from cultivated land and sediment redistribution along pathways from cultivated fields to river channels have been undertaken using a range of different methods and techniques, including erosion models, detailed studies of sediment redistribution in representative catchments, monitoring of gully head retreat and evaluation of sediment deposition in pon...

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An Aerodynamic Approach in Soil Hydraulic Conductivity Estimation ...

By: S. Vyacheslav; V. Sergey

Description: Federal Service for State Registration, Cadastre and Cartography, PO Box 428023, Elmenya st. house 12, of. 52, Cheboksary, Russia. We propose a new method for determining the degree of erosion for zonal soils of the East European Plain. This new approach uses soil porosity and filtration to determine a coefficient of aerodynamic similarity. We evaluated the degree of soil erosion on ranges of the major zonal soils of the eastern part of European Russia by ap...

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Regionalization of Coaxial Correlation Diagrams for the Semi-humid...

By: C. Yao; L. Chen; Q. Li; Z. Li

Description: College of Hydrology and Water Resources, Hohai University, Xikang Road,Nanjing, Jiangsu Province, 210098, China. This study aims to identify both hydrologically and physically similar catchments which would be the best donors for runoff prediction in ungauged catchments. For this study, eight gauged catchments located in the semi-humid and semi-arid regions of Northern China were used. Hydrological similarity was defined based on the transferability of coax...

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Changes in Flood Risk in Lower Niger–benue Catchments : Volume 370...

By: O. Adegun; S. Udofia; S. A. Raji; S. Odunuga

Description: Department of Geography, University of Lagos, Nigeria. Floods are devastating natural disasters with a significant impact on human life and the surrounding environment. This paper analyses historical and recent flood (2012 extreme) peak flow at strategic locations, land use activities and Floodplain Vulnerability Index analyses of the Niger–Benue River Floodplain. The 2012 peak flow at Jederbode on the Niger River was about 50% above the long term avera...

Adeniyi, P. O. and Omojola, A.: Land use/land cover change evaluation in Sokoto–Rima basin of NW Nigeria based on archival remote sensing and GIS techniques, in: Geoinformation Technology Applications for Resources and Environmental Management in Africa, edited by: Adeniyi, P. O., 143–172, African Association of Remote Sensing of the Environment (AARSE) publication, Wura-Kay Prints, Lagos, Nigeria, 1999.; AFO (Annual Flood Outlook): A publication of Nigeria Hydrological ...

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Satellite Data Analysis for Identification of Groundwater Saliniza...

By: L. Panciroli; M. De Giglio; M. Barbarella; N. Greggio

Description: DICAM – Civic, Chemical, Environmental and Materials Engineering Deptartment, University of Bologna, Via Risorgimento 2, I-40136 Bologna, Italy. In the phreatic aquifer below the San Vitale pinewood (Ravenna, Italy), natural and anthropogenic land subsidence, the low topography and the artificial drainage system have led to widespread saltwater intrusion. Since changes in the groundwater concentration induce variations in the vegetation properties, recogniza...

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Methodologies for Hydraulic Hazard Mapping in Alluvial Fan Areas :...

By: M. Pilotti; G. Valerio; R. Ranzi; L. Milanesi

Description: Department of Civil Engineering, Architecture, Land and Environment and of Mathematics – DICATAM – Università degli Studi di Brescia, Via Branze, 43-25123 Brescia, Italy. Hydraulic hazards in alluvial fan areas are mainly related to torrential floods and debris flows. These processes are characterized by their fast time evolution and relevant sediment load. Rational approaches for the estimation of hazard levels in flood-prone areas make use of the maps of d...

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Research Experiment on Infiltration and Runoff in Jujube Land of N...

By: P. Bai; X. Song

Description: State Key Laboratory Base of Eco-hydraulic engineering in Arid Area, Xi’an University of Technology, Xi’an, Shaanxi Province 710048, China. To provide guidance for the efficient use of rainwater in Jujube forests of the northern Shaanxi Province, research on the processes of infiltration and runoff under field simulated rainfall were conducted. The process of infiltration and runoff-yield on sloping land was simulated with Richards equation and the water bal...

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Probabilistic Assessment of the Rainwater Harvesting Potential of ...

By: S. McCarthy; N. Tshirangwana; J. G. Ndiritu

Description: School of Civil and Environmental Engineering, University of the Witwatersrand, Private Bag, 3 WITS, 2050, South Africa. In comparison to other sources of water supply, rainwater harvesting (RWH) has the typical advantages of being cheaper and easier to operate and maintain. This study aimed at assessing the hydrologic rainwater harvesting potential of rural schools in South Africa by obtaining RWH storage capacity (level of supply) reliability relationships...

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Interactions Between Fine-grained Sediment Delivery, River Bed Dep...

By: A. L. Collins; P. S. Naden; D. A. Sear; J. I. Jones; I. Pattison

Description: School of Civil and Building Engineering, University of Loughborough, Loughborough, LE11 3TU, UK. Salmonids clean river bed gravels to lay their eggs. However, during the incubation period fine sediment infiltrates the bed. This has been found to limit the success of salmonid spawning, as fine sediment reduces gravel permeability resulting in intra-gravel flow velocities and O2 concentrations decreasing. The success of salmonid spawning is therefo...

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A Combined Model of Sediment Production, Supply and Transport : Vo...

By: H. Izumiyama; K. Yamanoi; M. Fujita

Description: Disaster Prevention Research Institute, Kyoto University, Gokasho, Uji, Kyoto, 611-0011, Japan. In previous sediment-runoff models, the sediment production rates of mountain slopes, and the sediment supply rates to streams typically have been developed using empirical methods. A process-based model for sediment production and supply is, however, required for more exact simulations of sediment runoff. In this study, we develop a method to calculate the sedime...

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An Estimation Method of the Direct Benefit of a Waterlogging Contr...

By: Q. Guanghua; C. Zishen; L. Zengmei

Description: Department of Water Conservancy and Hydropower Engineering, South China University of Technology, Guangzhou, 510640, China. The direct benefit of a waterlogging control project is reflected by the reduction or avoidance of waterlogging loss. Before and after the construction of a waterlogging control project, the disaster-inducing environment in the waterlogging-prone zone is generally different. In addition, the category, quantity and spatial distribution o...

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Developing Tools to Link Environmental Flows Science and Its Pract...

By: N. Eriyagma; K. Jinapala

Description: International Water Management Institute (IWMI), PO Box 2075, Colombo, Sri Lanka. The term Environmental Flows (EF) may be defined as the quantity, timing and quality of water flows required to sustain freshwater and estuarine ecosystems and the human livelihoods and well-being that depend on these ecosystems. It may be regarded as water for nature or environmental demand similar to crop water requirements, industrial or domestic water demand. The practice o...

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