搜索结果: 1-15 共查到“水文学 Watershed”相关记录98条 . 查询时间(0.403 秒)
Practical use of SRTM digital elevation dataset in the urban-watershed modeling
SRTM-DEM Watershed modeling Hydrological model HEC-GeoHMS
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2015/8/14
The advent of satellite-based elevation dataset acquired by Shuttle Radar Topography Mission (SRTM) made new and novel techniques possible to model hydrological process in midsize to large scale water...
Location of Fraction-Saturated Areas in Watershed Using Empirically Calculated Topographical Index
VSA Water balance critical values shallow soils Shivalik region of India India
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2015/8/14
In engineering practice, simple methods are important for predicting runoff from watersheds particularly for flood forecasting and water balance calculations. In the present study, it is illustrated t...
Watershed Modeling Using GIS Technology: A Critical Review
Geographic Information System GIS hydrologic processes modeling watershed sensing
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2015/8/14
Understanding and managing water resource problems involves complex processes and interactions within the watershed surface and subsurface. The imposition of total maximum daily load (TMDL) regulation...
Erosion Predictions by Empirical Models in a Mountainous Watershed in Nepal
Erosion Predictions Empirical Models Mountainous Watershed Nepal
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2015/8/14
Soil erosion is a crucial problem in Nepal where more than 80% of the land area is mountainous. In this study, two commonly used empirical soil erosion models, Revised Universal Soil Loss Equation (RU...
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...
Watershed Physiography, Land Use, and Sediment Yield: A Case Study from Northwest Arkansas, USA
Reservoir Sedimentation Watershed Sediment yield Land use Slope
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2015/8/11
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...
Rainfall-Runoff Modeling for an Experimental Watershed of Western Greece Using Extended Time-Area Method and GIS
Rainfall-runoff modeling Forested watershed Time-area method Flow velocity
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2015/8/11
In this study, an effort was made to simulate the transformation of rainfall into runoff, in a small experimental mountainous-forested watershed in western Greece. The main objective was the productio...
Estimating Spatial Curve Number for Hydrologic Response analysis of a small Watershed
Curve Number Satellite Imagery Watershed modeling Geographic Information System GIS
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2015/8/11
An approach to estimate the curve number (CN) at each pixel unit of a satellite imagery, which is a key parameter in the widely used Soil Conservation Service Curve Number (SCSCN) hydrologic model, is...
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...
Spatially Distributed Watershed Mapping and Modeling: Thermal Maps and Vegetation Indices to Enhance Land Cover and Surface Microclimate mapping (part 1)
surface temperature vegetation indices Landsat land cover microclimate unsupervised classification
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2015/8/6
The extent and type of watershed cover affects the movement of water in the hydrologic cycle, thus accurate representation of the physical and biological features of the landscape within the watershed...
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...
A Spatial Technique for Estimating Streambank Erosion Based On Watershed Characteristics
Geographic Information System GIS watershed modeling streambank erosion sediment transport
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2015/8/6
A GIS-based technique was developed for estimating streambank erosion rates for more accurately predicting total sediment loads at the watershed scale without the use of detailed field data. This tech...