搜索结果: 1-15 共查到“知识库 水文学 information”相关记录16条 . 查询时间(0.14 秒)
Assessment of Soil Loss Using WEPP Model and Geographical Information System
WEPP GIS Soil erosion Watershed
2015/8/14
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...
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
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...
Estimating sediment yield using Agricultural Non-Point Sources (AGNPS) model: The effects of slope information from different GIS softwares
Geographical Information System GIS slope information Sediment yield AGNPS model tropical catchment
2015/8/6
This study compares the effects of slope information derived from three GIS software on sediment yield as estimated using AGNPS model. The three GIS software are IDRISI for Windows, ERDAS Imagine and ...
Assessment of Soil Loss Using WEPP Model and Geographical Information System
Modeling WEPP GIS Soil erosion
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...
Derivation of Instantaneous Unit Hydrograph for a sub-basin using Linear Geomorphological Model and Geographic Information Systems
Geographic Information System GIS
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...
Estimating sediment yield using Agricultural Non-Point Sources (AGNPS) model: The effects of slope information from different GIS softwares
Geographical Information System GIS slope information Sediment yield AGNPS model tropical catchment
2015/1/4
This study compares the effects of slope information derived from three GIS software on sediment yield as estimated using AGNPS model. The three GIS software are IDRISI for Windows, ERDAS Imagine and ...
Spatial interpolation of hourly rainfall – effect of additional information, variogram inference and storm properties
Spatial interpolation hourly rainfall additional information variogram inference
2011/3/15
Hydrological modelling of floods relies on precipitation data with a high resolution in space and time. A reliable spatial representation of short time step rainfall is often difficult to achieve due ...
Estimation of high return period flood quantiles using additional non-systematic information with upper bounded statistical models
return period flood quantiles additional non-systematic information
2010/12/22
This paper proposes the estimation of high return period quantiles using upper bounded distribution functions with Systematic and additional Non-Systematic information. The aim of the developed method...
Exploiting the information content of hydrological ''outliers'' for goodness-of-fit testing
information content hydrological outliers goodness-of-fit testing
2010/12/22
Validation of probabilistic models based on goodness-of-fit tests is an essential step for the frequency analysis of extreme events. The outcome of standard testing techniques, however, is mainly dete...
A geographic information systems analysis of hydro power potential in South Africa
geographic information systems analysis hydro power potential South Africa
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
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...
Arctic Snow Cover Information for Hydrological Investigations at Various Scales
Arctic Snow Cover Information Hydrological Investigations Various Scales
2009/10/23
Routine snow survey and snow gauge data provided by weather stations establish
snow-on-the-ground and snowfall time series but they lack a spatial dimension.
Of particular importance to arctic hydro...
River flow forecasting with artificial neural networks using satellite observed precipitation pre-processed with flow length and travel time information: case study of the Ganges river basin
River flow forecasting artificial neural networks flow length travel time information
2009/9/11
This paper explores the use of flow length and travel time as a pre-processing step for incorporating spatial precipitation information into Artificial Neural Network (ANN) models used for river flow ...
Web services for distributed and interoperable hydro-information systems
hydro-information systems hydro-information systems
2009/4/29
Web services support the integration and interoperability of Web-based applications and enable machine-to-machine interaction. The concepts of web services and open distributed architecture were appl...
Japanese Baetidae (Ephemeroptera)：keys to seven genera with information on taxonomy, distribution and habitat
Ephemeroptera Baetidae pictorial tabular key genera monophyletic groups Japan
2009/4/2
The author compiled a pictorial tabular key of male imagoes and nymphs of seven Japanese genera of the family Baetidae (Ephemeroptera), Acentrella Bengtsson, Alainites Waltz and McCafferty, Baetiella ...