搜索结果: 31-45 共查到“知识库 水文地理学”相关记录520条 . 查询时间(1.609 秒)
Nitrous oxide emission from riparian buffers in agricultural landscapes of Indiana
Nitrous oxide riparian agriculture denitrification
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2015/1/16
Riparian buffers have well documented capacity to remove nitrate (NO3-) from runoff and subsurface flow paths, but information on field-scale N2O emission from these buffers is lacking. This study mon...
Effect of Stakeholder Attitudes on the Optimization of Watershed Conservation Practices
conservation practices optimization stakeholder attitudes
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2015/1/16
Land use alterations have been major drivers for modifying hydrologic cycles in many watersheds nationwide. Imbalances in this cycle have led to unexpected or extreme changes in flood and drought patt...
RADIATIVE TRANSFER MODELING FOR QUANTIFYING LUNAR SURFACE MINERALS, PARTICLE SIZE AND SUBMICROSCOPIC IRON (SMFe)
Lunar soils Radiative transfer mode Newton method
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2015/1/16
The main objective of this work is to better quantify lunar surface minerals (agglutinate, clinopyroxene, orthopyroxene, plagioclase, olivine, ilmenite, and volcanic glass), particle sizes and the abu...
REMOTE SENSING DATA ASSIMILATION IN WATER QUALITY NUMERICAL MODELS FOR SIMULATION OF WATER COLUMN TEMPERATURE
data assimilation numerical model water temperature
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2015/1/16
Numerical models are important tools for simulating processes within complex natural systems, such as hydrodynamics and water quality processes within a water body. From decision makers’ perspectives,...
Combining Multivariate Statistical Methods and Spatial Analysis to Characterize Water Quality Conditions in the White River Basin, Indiana, U.S.A.
linear discriminant analysis principal component analysis water quality
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2015/1/16
This research performs a comparative study of techniques for combining spatial data and multivariate statistical methods for characterizing water quality conditions in a river basin. The study has bee...
Invasive Reed Canary Grass (Phalaris arundinacea) and Carbon Sequestration in a Wetland Complex
Carbon sequestration Residue quality Wetland complex Reed canary grass
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2015/1/16
Terrestrial carbon sequestration is one of several proposed strategies to reduce the rate of carbon dioxide (CO2) accumulation in the atmosphere, but the impact of plant invasion on soil organic carbo...
ROCK, TILL, AND ICE: A PROVENANCE STUDY OF THE BYRD GLACIER AND THE CENTRAL AND WESTERN ROSS SEA, ANTARCTICA
Glacial Geology Byrd Glacier Ross Sea Provenance
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2015/1/16
Petrography of the sand fraction, particle size analysis, and detrital zircon U/Pb isotope data, and pebble count data were collected from Byrd Glacier moraines and central/western Ross Sea till in or...
A Method for Extracting Stream Channel Flow Paths from LiDAR Point Cloud Data
Streams Channels Delineation
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2015/1/9
Traditional methods of delineating stream channel networks use gridded raster elevation data. Direct use of LiDAR point clouds, without first creating a raster or grid, could improve efficiency and ac...
Studies on Major Ion Chemistry and Hydrogeochemical Processes of Groundwater in Port Harcourt City, Southern Nigeria
Groundwater Port Harcourt City Nigeria
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2015/1/9
Of recent, the rapid deterioration of groundwater quality in Port Harcourt, Southern Nigeria due to unregulated exploitation resulting from increasing growth in the oil and gas production activities h...
Assessment of Soil Loss Using WEPP Model and Geographical Information System
Modeling WEPP GIS Soil erosion
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2015/1/9
Severe soil erosion has generally been regarded as a major cause of land degradation in arid and semi arid regions. A quantitative assessment of soil loss intensity is still scanty for developing appr...
Groundwater Flow Model and Particle Track Analysis for Selecting Water Quality Monitoring Well Sites, and Soil Sampling Profiles
modelling pollution studies Imo River basin
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2015/1/8
Researchers often use only surface drainage (imperical method) as a tradition to locate sites for installation of water quality monitoring wells, and soil sampling profile for pollution studies in urb...
A Method for Quantifying Stream Network Topology over Large Geographic Extents
stream network topology upstream cell count
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2015/1/8
An understanding of stream network topology is necessary for a landscape-level perspective of stream hydrology and ecology. We present a method for quantifying stream network topology that overcomes c...
Regional Dimensionless Rating Curves to Estimate Design Flows and Stages
Bankfull geometry Flow-frequency relationship
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2015/1/8
Dimensionless rating curves to estimate flows and stages of different return periods are investigated in this study for streams located in the Red River Basin of Minnesota and North Dakota, USA. Bankf...
Derivation of Instantaneous Unit Hydrograph for a sub-basin using Linear Geomorphological Model and Geographic Information Systems
Geographic Information System GIS
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2015/1/8
Rainfall is converted into runoff and reaches the river and it becomes river flow. Geomorphological Instantaneous Unit Hydrograph (GIUH) based approach, which uses the geomorphologic parameters, is us...
Evaluating Groundwater Potential of a Hard-rock Aquifer Using Remote Sensing and Geophysics
remote sensing geophysics well-yield
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2015/1/8
Water constitutes one of the sensitive environmental parameters of the hydrological processes. Therefore, the study of water resources exploitation sustainable to the environment is important. Water r...