Filter by collection

Current filters:


Current filters:


Refine By:

Search Results

Results 11-17 of 17 (Search time: 0.001 seconds).
Item hits:
  • BB


  • Authors: Wenninger, J.; Abimbola, O.P.;  Advisor: -;  Participants: - (2017)

  • In this study, streamflow characteristics of ungauged catchments in Rwanda were calculated using a regionalization approach based on climate similarity and stepwise multiple-regression analysis. One climatic homogeneous region was identified and datasets of nine gauged stations and general available catchment characteristics were used to develop non-transformed and log-transformed regression models. Results of this study show that climate, physiography and land cover strongly influence the hydrology of catchments in Rwanda. Using leave-one-out cross-validation, the log-transformed models were found to predict the flow parameters more suitably. These models can be used for estimating the flow parameters in ungauged catchments in Rwanda and the methodology can be applied in any other ...

  • BB


  • Authors: Yi, Yi; Kang, S.;  Advisor: -;  Participants: - (2017)

  • Since the establishment of the Nam Co research station, a large number of water isotope measurements in the watershed was accumulated. A water isotope framework for the Nam Co basin, including the Local Meteoric Water Line, limiting isotopic composition of evaporation and two hypothetical evaporation trajectories, is established. We further applied the isotope mass balance model to estimate the overall isotopic composition of input water to the Nam Co, the evaporation over inputs ratios (E/I) for three consecutive years, and the water yields (Wy, depth equivalent runoff) at a basin scale. Our results clearly suggest a positive water budget (i.e., E/I < 1), providing another line of evidence that the subsurface leakage from Nam Co is likely.

  • BB


  • Authors: Lamptey, B.L; Naabil, E.;  Advisor: -;  Participants: - (2017)

  • This paper explores the potential for using a state of the art hydrological model (WRF-Hydro) in a fully coupled (i.e. land surface hydrology-atmosphere) mode to assess these water resources, particularly the Tono basin in Ghana. The WRF-Hydro model is an enhanced version of the Weather Research and Forecasting model (WRF) which allows simulating river discharge.

  • BB


  • Authors: Makharadze, K.; Lomsadze, Z.;  Advisor: -;  Participants: - (2017)

  • The article provides an overview of the present-day condition of Kakheti water resources, one of the important regions of Georgia, and highlights all related negative aspects and issues.

  • BB


  • Authors: Jiang, Y.; Gan, Z.;  Advisor: -;  Participants: - (2017)

  • Water is the foundation of survival, the source of civilization and the base of ecology. Water security is significant to the stability and security of a country. In order to make sustainable use of Water Resources, China government aim at " "implementation of water resources consumption and intensity of double control action". Strengthening Water Resources monitoring capacity, more refined and scientific water management, is an important measure to achieve this goal.

  • BB


  • Authors: Tischbein, B.; Kumar, N.;  Advisor: -;  Participants: - (2017)

  • This research aims to assess the impact of climate change on water balance components. Hydrological simulations, performed by SWAT (Soil and Water Assessment Tool), indicate over-proportional runoff-rainfall and under-proportional percolation-rainfall relationships. Simulated annual discharge for 2020s will decrease by 2.9% on average (with a decrease of 25.9% for q1 to an increase by 23.6% for q14); for 2050s an average increase by 12.4% (17.6% decrease for q1 to 39.4% increase for q0). Respective ranges on percolation: for 2020s an average decrease by 0.8% (12.8% decrease for q1 to an increase of 8.7% for q14); for 2050s an average increase by 2.5% (10.3% decrease for q1 to 15.4% increase for q0). These over- and under-proportional relationships indicate future enhancement of floo...

  • BB


  • Authors: Hu, S.; Mo, X.;  Advisor: -;  Participants: - (2017)

  • Climate change is having a considerable impact on the availability of water resources for agricultural production on the North China Plain (NCP). Global climate model (GCM) ensemble projections predict that by the 2050s, the increased crop water demand and intensified ET resulting from global warming will reduce water resources surplus (Precipitation–ET) about 4%–24% and increase significantly the irrigation water demand in crop growth periods. This study assesses possible mitigation and adaptation measures for enabling agricultural sustainability. It is revealed that reducing the sowing area of winter wheat (3.0%–15.9%) in water-limited basins, together with improvement in crop water-use efficiency would effectively mitigate water shortages and intensify the resilience of agricultu...