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Assessing aquifer vulnerability to arsenic pollution using DRASTIC and GIS of North Bengal Plain:A case study of English Bazar Block, Malda District,West Bengal,India
DRASTIC vulnerability arsenic groundwater Malda West Bengal
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2015/8/13
Geographic Information System (GIS) was utilized to apply a modified DRASTIC method to assess the aquifer vulnerability to pollution of English Bazar Block of Malda District, West Bengal, India. In th...
Spatial Variability and Prediction Modeling of Groundwater Arsenic Distributions in the Shallowest Alluvial Aquifers in Bangladesh
Arsenic Bangladesh distribution spatial variability semivariogram prediction models
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2015/8/13
Elevated arsenic in groundwater is the greatest environmental problem in Bangladesh. Spatial variability of arsenic in groundwater has been examined by semivariogram analysis that revealed high degree...
Modeling and Understanding the Relationship between Vegetation and Rainfall of a Tropical Watershed using Remote Sensing Data and GIS
NDVI rainfall modelling calibration verification
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2015/8/13
A model is developed to understand the relationship between satellite-derived NDVI and rainfall data in a large tropical catchment. Two Fourier-based modeling techniques with a seasonal component, viz...
Evaluation of the Wetland Mapping Methods using Landsat ETM+ and SRTM Data
wetlands remote sensing mapping delineation automated methods semi-automated methods Limpopo river basin
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2015/8/13
Overarching goal of this paper was to evaluate automated and semi-automated methods of mapping wetlands using Landsat ETM+ and SRTM data. Automated methods consisted of: (a) slope derived from SRTM, (...
A Spatially Distributed Event-Based Model to Predict Sediment Yield
Runoff sediment yield Geographic Information System GIS remote sensing watershed event-based
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2015/8/11
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 ARIMA Thomas-Fiering
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2015/8/11
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 Analysis of Urban Stormwater Quality
Spatial analysis temporal analysis stormwater Event Mean Concentration geostatistics pollutants
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2015/8/11
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...
Spatial Modeling for Hydrological Response Behavior of an Arid Watershed, India-Remote Sensing and GIS approach
land use land cover vegetation vigour runoff soil erosion remote sensing Geographic Information System GIS
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2015/8/11
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...
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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2015/8/11
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 ...
Evaluation of Land Development Impact on a tropical Watershed Hydrology Using Remote Sensing and GIS
Land Development runoff HEC Water Resources GIS Remote Sensing
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2015/8/11
Understanding how the land use change influence the river basin hydrology will enable planners to formulate policies to minimize the undesirable effects of future land use changes. Land cover changes ...
Support Soil Conservation Practices by Identifying Critical Erosion Areas within an American Watershed Using the GIS-AGNPS Model
AGNPS C factor erosion GIS Iowa T value water quality modeling
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2015/8/11
Eroded soil from overland is one of the major nonpoint pollution sources in many watersheds. The subsequent sediment not only reduces conveyance capacity of streams and usable storage volume of reserv...
Spatial distribution of land type in regression models of pollutant loading
GIS Non-point source pollution nutrient export spatial distribution regression modeling
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2015/8/11
This paper proposes a method to improve landscape-pollution interaction regression models through the inclusion of a variable that describes the spatial distribution of a land type with respect to the...
Small-Scale Planktonic Structure: Persistence and Trophic Consequences
Persistence Trophic Consequences
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2015/8/6
Most conventional sampling methods limit our ability to resolve planktonic distributions over vertical scales less than a few meters. Estimates of in situ biological rates also are limited by equipmen...
Improving overland flow routing by incorporating ancillary road data into Digital Elevation Models
Watershed Delineation Road Geographic Information System GIS Flow Direction Digital Elevation Model DEM Hydrological Modeling
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2015/8/6
Roads, ditches, and culverts influence hydrological and geomorphological processes significantly. However, most hydrological models continue to rely solely on regional digital elevation models (DEMs) ...
Spatially Distributed Watershed Mapping and Modeling: GIS-based Storm Runoff and Hydrograph Analysis: (part 2)
Runoff Geographic Information System GIS curve number land-cover spatially distributed
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2015/8/6
Advances in scientific knowledge and new techniques of remote sensing permit a better understanding of the physical land features governing hydrologic processes, and make possible efficient, large-sca...