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Performance of high-resolution X-band radar for rainfall measurement in The Netherlands
Performance high-resolution X-band radar rainfall measurement Netherlands
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2010/2/20
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...
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...
SNOW-WATER EQUIVALENT MEASUREMENT USING NATURAL GAMMA EMISSION
SNOW-WATER EQUIVALENT MEASUREMENT NATURAL GAMMA EMISSION
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2009/10/29
The natural gamma radiation emitted by potassium, uranium and thorium
is attcnuated by snow. This attenuation depends on the water-equivalent
of the snow layer. Air absorption coefficients were dete...
DEPTH INTERVALS AND TOPSOIL MOISTURE MEASUREMENT WITH THE NEUTRON DEPTH PROBE
DEPTH INTERVALS TOPSOIL MOISTURE MEASUREMENT NEUTRON DEPTH PROBE
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2009/10/29
From measurements and calculations using a depth probe, the relative
response is estimated for soil layers of different thicknesses. For a 10 cm
thick layer of soil with the instrument centre in the...
Measurement of Vertical Recharge to Groundwater in Haryana State(India) Using Tritium Tracer
Vertical Recharge Haryana State Tritium Tracer
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2009/10/29
Downward movement of soil moisture due to rainfall and supplemental irrigation
in the unsaturated zonf has been followed by tagging a layer of soil with tritiated
water at a number of sites in the s...
Measurement and Mapping of Potential Evapotranspiration in a Small Mountainous Watershed
Measurement Mapping Potential Evapotranspiration Small Mountainous Watershed
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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...
Measurement and Modeling of Microwave Emission from Forested Snowfields in Michigan
Measurement Modeling of Microwave Emission Forested Snowfields
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2009/10/28
Forest cover was found to confuse the normally inverse relationship between
microwave brightness temperature (TrJ) and snow depth in dry snowpacks in
the lower peninsula of Michigan during February ...
A new Expression for the Uncertainty of a Current Meter Discharge Measurement
new Expression Uncertainty Meter Discharge Measurement
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2009/10/27
A method for the conduction of routine current meter discharge measurements
practised in Denmark and Norway is described. Contrary to traditional
methods (ISO-recommendations) it incorporates inform...
A Review of Techniques used by Canada and other Northern Countries for Measurement and Computation of Streamflow under Ice Conditions
Northern Countries Measurement Computation Ice Conditions
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2009/10/26
In Canada, Water Survey of Canada, a division of the Water Resources Branch
of Environment Canada, is responsible for the collection and processing of data
from more than 3,300 active streamflow, wa...
A dynamic rating curve approach to indirect discharge measurement
dynamic rating curve steady-flow indirect discharge measurement
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2009/7/22
The operational measurement of discharge in medium and large rivers is mostly based on indirect approaches by converting water stages into discharge on the basis of steady-flow rating curves. Unfortu...
The Use of Lysimeters in the Study of Soil Surface Processes:Modelling and Measurement Applications
hydrology percolation soil moisture varition lysimeters
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2009/6/12
The Use of Lysimeters in the Study of Soil Surface Processes:Modelling and Measurement Applications.
Continuous pH, electrical conductivity and temperature measurement at Plynlimon：towards an integrated, reliable and low maintenance instrument system
Water quality Continuous pH temperature measurement electrical conductivity
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2009/6/8
Water quality data for the Nant Tanilwyth stream, Plynlimon (an acidic upland stream, the waters of which are of such low ionic strength that measurement is difficult), has been recorded using a new i...
Direct measurement of evaporation from grassland at Plynlimon
Direct measurement evaporation grassland
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2009/6/8
Over the last decade there has been some uncertainty over the calculation of "actual" catchment evaporation from the long-term difference between rainfall and runoff for the grassland Wye catchment at...
Extension of the measurement range of electrical conductivity by time-domain reflectometry (TDR)
electrical conductivity time-domain reflectometry
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2009/6/8
The electrical conductivity (EC) of a medium invaded by TDR sensors can be estimated from the impedance of a TDR reflectogram. Four categories of sensor were tested in salt solutions and the impedance...
On the measurement of solute concentrations in 2-D flow tank experiments
2-D flow tank experiments photometric method
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2009/5/4
In this study we describe and compare photometric and resistivity measurement methodologies to determine solute concentrations in porous media flow tank experiments. The first method is the photometri...