搜索结果: 61-75 共查到“知识库 水文地理学”相关记录520条 . 查询时间(2.135 秒)
Predicting runoff and phosphorus loads from variable source areas: A terrain-based spatial modeling approach
terrain analysis surface water phosphorus
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2015/1/6
Research has been conducted at Flaxley Agricultural Centre in South Australia to predict phosphorus loss in surface runoff from dairy pastures. Part of the research investigated if the topography base...
Development of a Multivariate Regression Model for Soil Nitrate Nitrogen Content Prediction
NPS soil moisture spatial analysis visualization
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2015/1/6
Although soil nitrate nitrogen (N) is a nutrient source for crop, it could be a potential nonpoint pollution source to the environment when its content remains high with an inappropriate management. S...
Erosion Risk Assessment using an Empirical Model of Pacific South West Inter Agency Committee Method for Zargeh Watershed, Iran
MPSIAC Erosion Sediment Yield Iran
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2015/1/6
Watershed degradation due to soil erosion and sedimentation is one of the major environmental problems in Iran. In addressing the issue, a study on the validity of an empirical model of Pacific South ...
Classification of Spatio - Temporal Pattern of Rainfall in Iran Using a Hierarchical and Divisive Cluster Analysis
Cluster Analysis Ward Method Iran
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2015/1/6
The identification of spatial rainfall pattern is an essential task for hydrologists, climatologists as well as regional and local planners and managers. This is due to the variability of both the tem...
Estimation of aquifer hydraulic characteristics from electrical sounding data: the case of middle Imo River basin aquifers, south- eastern Nigeria
Dar - Zarrouk parameters Resistivity Imo River Basin Nigeria
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2015/1/6
We have used the concept of Da - Zarrouk parameters (transverse unit resistance (R) and longitudinal conductance (C)) in porous media to determine aquifer hydraulic characteristics within the middle I...
Mapping of contamination plumes at municipal solid waste disposal sites using geoelectric imaging technique: Case studies in Malaysia
disposal sites leachate plume Malaysia
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2015/1/6
Municipal solid waste disposal sites can be sources of groundwater contamination and the contamination problems are more likely to occur in humid areas, where the moisture available exceeds the abilit...
Hydrology and Water Balance of Devils Lake Basin: Part 2 - Grid-Based Spatial Surface Water Balance Modeling
water balance Devils Lake remote sensing
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2015/1/6
In this part of the study, grid-based spatial water balance approach was used to estimate the annual water balance of Devils Lake basin, hydrologically closed lake located in the Red River of the Nort...
Hydrology and Water Balance of Devils Lake Basin: Part 1 - Hydrometeorological Analysis and Lake Surface Area Mapping
Geographic Information System GIS runoff
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2015/1/6
The spatial distribution of stocks of water is useful in studying flood, water pollution and water supply problems. Flood prone and closed basin watersheds benefit from spatial water balance studies i...
Kriging of Groundwater Levels – A Case Study
Semivariogram Kriging India
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2015/1/6
In this paper, application of the spatial statistical technique, kriging, for the spatial analysis of groundwater levels is shown. The data set consists of groundwater levels measured at about 60 poin...
Estimating Spatial Sediment Delivery Ratio on a Large Rural Catchment
soil erosion sediment yield sediment delivery ratio
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2015/1/6
Soil erosion and sediment yield from catchments are key limitations to achieving sustainable land use and maintaining water quality in streams, lakes and other water bodies. Controlling sediment loadi...
Watershed Physiography, Land Use, and Sediment Yield: A Case Study from Northwest Arkansas, USA
Sediment yield Land use Slope Arkansas
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2015/1/6
Precision echo sounder surveys of bathymetry and sediment thickness of Lee Creek Reservoir and Lake Shepherd Springs (northwest Arkansas) were combined with Geographic Information Systems (GIS) analys...
A Spatially Distributed Event-Based Model to Predict Sediment Yield
Runoff sediment yield Geographic Information System
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2015/1/5
A study has been conducted in three sub-watersheds to model the spatial distribution of runoff and sediment yield. The basic structure of the model includes generation of runoff using SCS curve number...
Performances of Stochastic Approaches in Generating Low Streamflow Data for Drought Analysis
monthly-minimum daily discharge stochastic model
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2015/1/5
This study analyzed the monthly-minimum daily discharge data of each month from three gauge stations on Cekerek Stream for forecasting using stochastic approaches. Initially non-parametric test (Mann-...
Spatial Modeling for Hydrological Response Behavior of an Arid Watershed, India - Remote Sensing and GIS approach
Geographic Information System GIS
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2015/1/5
The paper discusses the applications of satellite remote sensing and GIS on characterization and spatial modeling of runoff and soil erosion of Birantiya Kalan, an arid watershed in the district of Pa...
Spatial Analysis of Urban Stormwater Quality
Event Mean Concentration geostatistics pollutants
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2015/1/5
Urban stormwater non-point source pollutants are recognized as a major cause of receiving waters quality deterioration. To date most research has focused on specifying temporal variations of stormwate...