Filter by collection

Current filters:


Current filters:


Refine By:

Search Results

  • previous
  • 1
  • next
Results 1-6 of 6 (Search time: 0.207 seconds).
Item hits:
  • BB

  • Combined impacts of future land-use and climate stressors on water resources and quality in groundwater and surface waterbodies of the upper Thames river basin, UK

    • Authors: Hutchins, M.G.; Hutchins, M.G.;  Advisor: -;  Participants: - (2018)

  • Changes to river flows, water temperature, river and reservoir quality were predicted under three contrasting future “storylines”; one an extension of present day rates of economic development, the others representing more extreme and less sustainable visions. Modelling revealed that lower baseflow conditions will arise under all storylines. For the less extreme storyline river water quality is likely to deteriorate but reservoir quality will improve slightly. The two more extreme futures could not be supported by current management strategies to meet water demand. To satisfy these scenarios, transfer of river water from outside the Thames river basin would be necessary. Consequently, some improvement over present day water quality in the river may be seen, and for most indicators c...
  • BB

  • Advances in water resources research in the Upper Blue Nile basin and the way forward: A review

    • Authors: Tekleab, S.; Dile, Y.T.;  Advisor: -;  Participants: - (2018)

  • This paper aims to bridge this gap by reviewing the advances in water resources research in the basin while highlighting research needs and future directions. We report that there have been several research projects that try to understand the biogeochemical processes by collecting information on runoff, groundwater recharge, sediment transport, and tracers. More recent research has been using advanced semi-physically/physically based distributed hydrological models using high-resolution temporal and spatial data for diverse applications. We identified several research gaps and provided recommendations to address them. While we have witnessed advances in water resources research in the basin, we also foresee opportunities for further advancement. Incorporating the research findings i...
  • BB

  • Data on corrosion and scaling potential of drinking water resources using stability indices in Jolfa, East Azerbaijan, Iran

    • Authors: Mahvi, A.H.; Yousefi, M.;  Advisor: -;  Participants: - (2018)

  • This cross-sectional study was conducted on the drinking water resources of the city of Jolfa (East Azerbaijan province, Iran) from samples taken from 30 wells. Calcium hardness, pH, total alkalinity, TDS, temperature and other chemical parameters were measured using standard methods. The Langelier, Rayzner, Puckhorius and aggressive indices were calculated. The results showed that the Langelier, Reynar, Puckorius, Larson-skold and aggressive indices were 1.15 (± 0.43), 6.92 (± 0.54), 6.42 (± 0.9), 0.85 (± 0.72) and 12.79 (± 0.47), respectively. In terms of water classification, 30% of samples fell into the NaCl category and 26.6% in the NaHCO3 category and 43.4% samples in the CaHCO3, MgHCO3 and MgCl category. The sedimentation indices indicated that the water of the wells could be...
  • BB

  • Neuro-fuzzy inference system Prediction of stability indices and Sodium absorption ratio in Lordegan rural drinking water resources in west Iran

    • Authors: Mirzabeygi, M. Radfard; Takdastan, A.;  Advisor: -;  Participants: - (2018)

  • The aim of this study is to assess physical and chemical parameters of drinking water in the rural areas of Lordegan city, also to determine corrosion indices. This cross-sectional study has carried out with 141 taken samples during 2017 with 13 parameters, which has been analyzed based on standard method and to estimate the water quality indices from groundwater using ANFIS. Also with regard to standard conditions, results of this paper are compared with Environmental Protection Agency and Iran national standards. Five indices, Ryznar Stability Index (RSI), Langlier Saturation Index (LSI), Larson-Skold Index (LS), Puckorius Scaling Index (PSI), and Aggressive Index (AI) programmed by using Microsoft Excel software. Parameters included Sulfate, Sodium, Chloride, and Electrical Condu...
  • BB

  • Water resources conservation and nitrogen pollution reduction under global food trade and agricultural intensification

    • Authors: Liu, J.; Liu, W.;  Advisor: -;  Participants: - (2018)

  • Here we performed a global-scale assessment of impacts of international food trade on blue water use, total water use, and nitrogen (N) inputs and on N losses in maize, rice, and wheat production. Results show that food exports generally occurred from regions with lower water and N use intensities, defined here as water and N uses in relation to crop yields, to regions with higher resources use intensities. The study provides useful information to understand the implications of agricultural intensification for international crop trade, crop water use and N pollution patterns in the world.
  • BB

  • Vulnerability assessment of water resources – Translating a theoretical concept to an operational framework using systems thinking approach in a changing climate : Case study in Ogallala Aquifer

    • Authors: Kannan, N.; Anandhi, A.;  Advisor: -;  Participants: - (2018)

  • The overall objective of this study was to develop a novel tool that can translate a theoretical concept (vulnerability of water resources (VWR)) to an operational framework mainly under altered temperature and precipitation, as well as for population change (smaller extent). The developed application was demonstrated in Kansas (overlying the High Plains region/Ogallala Aquifer, considered the “breadbasket of the world”), using 26 indicators with intermediate level of detail. Our results indicate that the western part of the state is vulnerable from agricultural water use and the eastern part from urban water use. The developed tool can be easily replicated to other regions within and outside the US.
  • previous
  • 1
  • next