搜索结果: 1-15 共查到“水文学 observations,”相关记录28条 . 查询时间(0.216 秒)
Accounting for instream lakes when interpolating stream water chemistry observations
geostatistics kriging stream water chemistry
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2015/8/14
Direct monitoring of stream water chemistry is an increasingly important tool for securing stream water quality and assessing stream ecological functioning as it relates to overall ecosystem health. S...
Accounting for instream lakes when interpolating stream water chemistry observations
geostatistics kriging stream water chemistry
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2015/1/9
Direct monitoring of stream water chemistry is an increasingly important tool for securing stream water quality and assessing stream ecological functioning as it relates to overall ecosystem health. S...
Global land-surface evaporation estimated from satellite-based observations
Global land-surface satellite-based observations evaporation estimated
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2011/3/14
This paper outlines a new strategy to derive evaporation from satellite observations. The approach uses a variety of satellite-sensor products to estimate daily evaporation at a global scale and 0.25 ...
Polymer tensiometers with ceramic cones: direct observations of matric pressures in drying soils
Polymer tensiometers ceramic cones drying soils
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2010/12/22
Measuring soil water potentials is crucial to characterize vadose zone processes. Conventional tensiometers only measure until approximately −0.09 MPa, and indirect methods may suffer from the n...
Modelling field scale water partitioning using on-site observations in sub-Saharan rainfed agriculture
field scale water partitioning on-site observations sub-Saharan rainfed agriculture
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2010/4/7
Smallholder rainfed farming systems generally realise sub-optimal crop yields which are largely attributed to dry spell occurrences during crop growth stages. However, through the introduction of appr...
Evaluation of alternative formulae for calculation of surface temperature in snowmelt models using frequency analysis of temperature observations
alternative formulae surface temperature snowmelt models frequency analysis temperature observations
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2010/4/7
The snow surface temperature is an important quantity in the snow energy balance, since it modulates the exchange of energy between the surface and the atmosphere as well as the conduction of energy i...
Upper Layer Observations and Simulation Using Kraus and Turner's Model in the Gulf of Finland
Upper Layer Observations Simulation Kraus and Turner's Model Gulf of Finland
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2009/10/29
There are strong seasonal variations in the depth of the thermocline and in the
sea surface temperature in the western part of the Gulf of Finland. A
numerical model, developed by Kraus and Turner, ...
Utilization of Satellite Snow-Cover Observations for Seasonal Streamflow Estimates in the Western Himalayas
Satellite Snow-Cover Observations Seasonal Streamflow Estimates Western Himalayas
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2009/10/28
The results presented in this study indicate the possibility of seasonal runoff
prediction when satellite-derived basin snow-cover data are related to point
source river discharge data for a number ...
Proposed Swedish Spillway Design Floods in Relation to Observations and Frequency Analysis
Swedish Spillway Design Floods Observations Frequency Analysis
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2009/10/27
Proposed guidelines for the computation of spillway design floods in Sweden
are described. The guidelines are based on the transformation of extreme
hydrological conditions to floods by use of conce...
Sulphur and Oxygen Isotopes Behaviour in Sulphates of Atmospheric Ground water System Observations and Model
Sulphur Oxygen Isotopes Behaviour Atmospheric Ground water System
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2009/10/26
Comparison of sulphate concentrations in groundwaters and atmospheric precipitation
suggests that about 30 % of groundwater sulphate may be of atmospheric
origin. Another source of sulphate ion is t...
Oxygen Isotope and Ionic Concentrations in Glacier River Water:Multi-Year Observations inthe Austre Okstindbreen Basin,Norway
Oxygen Isotope Ionic Concentrations Glacier River
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2009/10/26
Austre Okstindbreen, the largest glacier of the Okstindan area, Norway, covers
about 14 km2 within a drainage basin of 22.5 km2. Each year, about one third of
the discharge of the glacier river resu...
Observations of the Specific Resistance in the Øresund
Observations Specific Resistance Ø resund
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2009/10/23
The specific resistance and three other secondary coeff'icients in the instantaneous
integral energy equation describing the flow in the 0resund strait, are accurately
estimated from over two years ...
Neural Networks in the Ice-Correction of Discharge Observations
Neural Networks Ice-Correction Discharge Observations
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2009/10/23
We have applied three models, a neural network, a conceptual model and a combination
of these two, a hybrid model, to model thc backwatcr effect of ice in a
river. The neural network is a black-box ...
Observations of Ice and Its Sediments on the Baltic Sea Coast
Observations of Ice Sediments Baltic Sea Coast
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2009/10/23
Ice samples were taken in winter 1996 for determining the quality and quantity
of sediment inclusions (suspended matter). The study area was the coast of the
Gulf of Finland in the Baltic Sea. The d...
Field Observations of Small Scale Spatial Variability of Snowmelt Drainage and Infiltration
Field Observations Small Scale Spatial Variability Snowmelt Drainage
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2009/10/23
De-icing chemicals (containing 1,2 propane diol and potassium acetate) used on
airports in winter time mix with snow and start infiltrating along the runways in
spring. The distribution of the chemi...