搜索结果: 16-30 共查到“水文学 mapping”相关记录40条 . 查询时间(0.058 秒)
Mapping surface soil moisture over the Gourma mesoscale site (Mali) by using ENVISAT ASAR data
Mapping surface soil moisture Gourma mesoscale ENVISAT ASAR
2011/3/15
The potentialities of ENVISAT ASAR (Advanced Synthetic Aperture Radar) multi-angle data for mapping surface soil moisture (SSM) in Sahelian rangelands are investigated at medium scale (30 000 km2). Th...
Mapping snow depth return levels: smooth spatial modeling versus station interpolation
Mapping snow depth return levels smooth spatial modeling
2010/12/22
For adequate risk management in mountainous countries, hazard maps for extreme snow events are needed. This requires the computation of spatial estimates of return levels. In this article we use recen...
Spatial mapping of leaf area index using hyperspectral remote sensing for hydrological applications with a particular focus on canopy interception
Spatial mapping leaf area index hyperspectral remote sensing hydrological applications
2010/3/5
The establishment of commercial forestry plantations in natural grassland vegetation, results in increased transpiration and interception which in turn, results in a streamflow reduction. Methods to q...
Numerical conformal mapping and mesh generation for polygonal and multiply-connected regions
Numerical conformal mapping mesh generation polygonal and multiply-connected regions
2009/12/7
Details are given of a boundary-fitted mesh generation method for use in modelling free surface flow and water quality. A numerical method has been developed for generating conformal meshes for curvil...
Fuzzy mapping of momentum fluxes in complex shear flows with limited data
Fuzzy mapping momentum fluxes complex shear flows limited data
2009/12/4
This study is divided into three parts centred around modelling the complex turbulent fluxes across strong shear layers, such as exist between the channel and floodplain flow in an over bank flood flo...
How much does inclusion of non-linearity and multi-point pattern recognition improve the spatial mapping of complex patterns of groundwater contamination?
inclusion of non-linearity multi-point pattern recognition spatial mapping complex patterns
2009/10/30
In this brief communication, we discuss the implication of the hypothesis that "non-linearity and multi-point pattern recognition can improve the spatial mapping of complex patterns of groundwater con...
Runoff is a difficult variable to map because the information from river
gauging stations only indicates average runoff from the catchment area
above the gauging point. A method of mapping runoff by...
Measurement and Mapping of Potential Evapotranspiration in a Small Mountainous Watershed
Measurement Mapping Potential Evapotranspiration Small Mountainous Watershed
2009/10/28
The potential evapotranspiration ETP can be estimated by using Brochet and
Gerbier's formula (1972), which is derived from Penman's equation
where m and n are tabulated coefficients depending on sea...
Snow Cover Mapping using Microcomputer Image Processing Systems
Snow Cover Microcomputer Image Processing Systems
2009/10/26
For many years, digital snow cover mapping using satellite data had to be
carried out on large and expensive image processing systems. Recently, small
computer systems (microcomputers) have been dev...
REGIONAL GENERALIZATION IN SUPPORT OF GEOLOGIC MAPPING
geologic mapping western Cuba REGIONAL GENERALIZATION
2009/10/13
The task of regional generalization for geologic mapping can be simplified by establishing sectors where the characteristics of observed fields show certain homogeneities. In many cases, this procedur...
HYDROCHEMISTRY AND MAPPING OF THE GROUNDWATER CONTAMINATION INDEX IN CHANGCHUN CITY, CHINA
HYDROCHEMISTRY CHANGCHUN CITY GROUNDWATER CONTAMINATION INDEX
2009/10/13
Groundwater quality is changing in Changchun City. The Ca-HCO3 or Ca-Cl facies type tends to be influenced by release of anthropogenic nitrate, calcium, sulfide, and chloride. A scatter analysis shows...
FOREST MANAGEMENT PLANNING FOR SOIL CONSERVATION USING SATELLITE IMAGES, GIS MAPPING, AND SOIL EROSION MODELING
Soil conservation planning watersheds physical reconnaissance surveys
2009/10/12
Soil conservation planning in inaccessible mountainous watersheds is a very tedious and expensive job. Generally, in India most soil conservation programs are carried out with physical reconnaissance ...
ELECTRONIC WATER TABLE CONTOUR MAPPING AND GROUNDWATER NITRATE INTERPOLATION AT A DAIRY FARM IN TEAGASC, JOHNSTOWN CASTLE, WEXFORD, IRELAND
ELECTRONIC WATER TABLE hydraulic conductivity CONTOUR MAPPING
2009/10/12
The objective of the present study was to construct electronic groundwater maps for the 60.5 ha dairy farm in the Teagasc Environment Research Centre at Johnstown Castle, Wexford, Ireland. Monitoring ...
On the role of the runoff coefficient in the mapping of rainfall to flood return periods
runoff coefficient rainfall flood return periods
2009/7/22
While the correspondence of rainfall return period TP and flood return period TQ is at the heart of the design storm procedure, their relationship is still poorly understood. The purpose of this pape...
Pedo-transfer functions are largely used in soil hydraulic characterisation of large areas. The use of physico-empirical approaches for the derivation of soil hydraulic parameters from disturbed sam...