搜索结果: 136-150 共查到“知识库 水文地理学”相关记录520条 . 查询时间(2.698 秒)
HESS Opinions On the use of laboratory experimentation:“Hydrologists,bring out shovels and garden hoses and hit the dirt”
HESS Opinions laboratory experimentation Hydrologists shovels garden hoses
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2010/3/5
From an outsider's perspective, hydrology combines field work with modelling, but mostly ignores the potential for gaining understanding and conceiving new hypotheses from controlled laboratory experi...
A contribution to understanding the turbidity behaviour in an Amazon floodplain
contribution turbidity behaviour Amazon floodplain
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2010/3/5
Observations of turbidity provide quantitative information about water quality. However, the number of available in situ measurements for water quality determination is usually limited in time and spa...
Use of satellite-derived data for characterization of snow cover and simulation of snowmelt runoff through a distributed physically based model of runoff generation
satellite-derived data snow cover snowmelt runoff runoff generation
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2010/3/5
A technique of using satellite-derived data for constructing continuous snow characteristics fields for distributed snowmelt runoff simulation is presented. The satellite-derived data and the availabl...
Global spatial optimization with hydrological systems simulation:application to land-use allocation and peak runoff minimization
Global spatial optimization hydrological systems simulation land-use allocation peak runoff minimization
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2010/3/5
A general methodology is presented to integrate complex simulation models of hydrological systems into optimization models, as an alternative to scenario-based approaches. A gradient-based hill climbi...
Less rain,more water in ponds:a remote sensing study of the dynamics of surface waters from 1950 to present in pastoral Sahel (Gourma region,Mali)
remote sensing study dynamics surface waters pastoral Sahel
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2010/3/5
Changes in the flooded area of ponds in the Gourma region from 1950 to present are studied by remote sensing, in the general context of the current multi-decennial Sahel drought. The seasonal and inte...
Forest decline caused by high soil water conditions in a permafrost region
Forest decline high soil water conditions permafrost region
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2010/2/20
In the permafrost region near Yakutsk, eastern Siberia, Russia, annual precipitation (June–May) in 2005–2006 and 2006–2007 exceeded the 26-year (1982–2008) mean of 222±68 mm by 185 mm and 128 mm, resp...
Forest decline caused by high soil water conditions in a permafrost region
Forest decline high soil water conditions permafrost region
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2010/3/5
In the permafrost region near Yakutsk, eastern Siberia, Russia, annual precipitation (June–May) in 2005–2006 and 2006–2007 exceeded the 26-year (1982–2008) mean of 222±68 mm by 185 mm and 128 mm, resp...
Technical Note:Comparing and ranking soil drought indices performance over Europe,through remote-sensing of vegetation
soil drought indices performance Europe remote-sensing vegetation
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2010/3/5
In the past years there have been many attempts to produce and improve global soil-moisture datasets and drought indices. However, comparing and validating these various datasets is not straightforwar...
Implementing small scale processes at the soil-plant interface – the role of root architectures for calculating root water uptake profiles
small scale processes soil-plant interface root architectures root water uptake profiles
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2010/3/5
In this paper, we present a stand alone root water uptake model called aRoot, which calculates the sink term for any bulk soil water flow model taking into account water flow within and around a root ...
Increase in surface runoff in the central mountains of Mexico:lessons from the past and predictive scenario for the next century
surface runoff central mountains Mexico past and predictive scenario
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2010/3/5
The hydrological response of a medium scale mountainous watershed (Mexico) is analysed over half a century. The hydrograph separation highlights an increasing surface runoff contribution since the ear...
Uncertainty in the determination of soil hydraulic parameters and its influence on the performance of two hydrological models of different complexity
Uncertainty determination soil hydraulic parameters performance hydrological models
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2010/3/5
Data of soil hydraulic properties forms often a limiting factor in unsaturated zone modelling, especially at the larger scales. Investigations for the hydraulic characterization of soils are time-cons...
Modelling the inorganic nitrogen behaviour in a small Mediterranean forested catchment,Fuirosos (Catalonia)
inorganic nitrogen behaviour Mediterranean forested catchment Fuirosos
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2010/3/5
The aim of this work was to couple a nitrogen (N) sub-model to already existent hydrological lumped (LU4-N) and semi-distributed (LU4-R-N and SD4-R-N) conceptual models, to improve our understanding o...
Soil bioengineering for risk mitigation and environmental restoration in a humid tropical area
Soil bioengineering risk mitigation environmental restoration humid tropical area
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2010/3/5
The use of soil bio-engineering techniques in developing countries is a relevant issue for disaster mitigation, environmental restoration and poverty reduction. Research on the autochthonal plants sui...
Relating surface backscatter response from TRMM precipitation radar to soil moisture:results over a semi-arid region
surface backscatter response TRMM precipitation radar soil moisture semi-arid region
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2010/3/5
The Tropical Rainfall Measuring Mission (TRMM) carries aboard the Precipitation Radar (TRMMPR) that measures the backscatter (σ°) of the surface. σ° is sensitive to surface soil moisture and vegetatio...
Performance of high-resolution X-band radar for rainfall measurement in The Netherlands
Performance high-resolution X-band radar rainfall measurement The Netherlands
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2010/3/5
This study presents an analysis of 195 rainfall events gathered with the X-band weather radar SOLIDAR and a tipping bucket rain gauge network near Delft, The Netherlands, between May 1993 and April 19...