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A Method for Quantifying Stream Network Topology over Large Geographic Extents
stream network topology upstream cell count landscape ecology digital elevation models
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2015/8/14
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...
Derivation of Instantaneous Unit Hydrograph for a sub-basin using Linear Geomorphological Model and Geographic Information Systems
Geographic Information System GIS Linear Geomorphological Model LGM GIUH
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2015/8/14
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...
Entropy production by evapotranspiration and its geographic variation
hydrologic cycle evapotranspiration land surface entropy production principle of Maximum Entropy Production vegetation effects
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2015/2/3
The hydrologic cycle is a system far from thermodynamic equilibrium that is characterized by its rate of entropy production in the climatological mean steady state. Over land, the hydrologic cycle is ...
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...
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...
Development and applications of a soil geographic database: a case study in a deltaic environment under rice cultivation
land management soil database capability map dataset salinity Ebro Delta
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2014/11/12
The chosen area of this case study is the northern part of the Ebro Delta in northeast Spain. It
used to be an unhealthy swamp until sixty to eighty years ago. Within a relatively short period,
thi...
A geographic information systems analysis of hydro power potential in South Africa
geographic information systems analysis hydro power potential South Africa
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2009/12/7
Electrification can reduce the dependence on combustible fuels and therefore also reduce the concomitant health risks. Hydro power is one possible method of generating electric power close to the pote...
Calculation of time of concentration for hydrologic design and analysis using geographic information system vector objects
time of concentration hydrologic design geographic information system vector objects
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2009/12/4
Synthetic unit hydrographs are commonly used to estimate runoff from rainfall events in a hydrologic analysis. A key parameter required as part of any hydrologic analysis using a synthetic unit hydrog...
Quantitative Evaluation of Non-point Pollution of Taihu Watershed Using Geographic Information System
GIS Best Management Practice(BMP) non-point source pollution Taihu Watershed
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2008/11/20
This paper focuses the quantitative evaluation of non point sources of pollution by
graphical maps of watershed and estimating area based load of pollutants of various land uses with the use of Arc/V...