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Determination of Aquifer Diffusivity from Annual Fluctuations of Ground Water Levels
Aquifer Diffusivity Annual Fluctuations Ground Water Levels
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2009/10/29
Annual fluctuations of ground water levels of an aquifer are described as a
consequence of water recharging periodically over a part of the aquifer. These
areas can be depicted by drawing maps showi...
Optimal Allocation of Regional Water Resources
Optimal Allocation Regional Water Resources
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2009/10/29
A methodology is presented for the optimal allocation of water resources in a
region, considering the economic and hydrologic characteristics of the water
resources system. In order to systematicall...
Studies of the Variations in Water Content in the Unsaturated Zone of an Esker
Variations Water Content Unsaturated Zone Esker
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2009/10/29
In this study the changes in water content in the unsaturated zone of a large
esker at T b s j o have been measured with a combined gammalneutron probe.
Periods of heavy rainfall and intense snow-me...
Deterioration in the Water Quality of Groundwater in Some Municipal Water Extraction Plants in Finland
Water Quality Groundwater Municipal Water Extraction Plants Finland
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2009/10/28
In this study the changes in the quality of groundwater are described on the
basis of material collected at some groundwater extraction plants situated
mainly in urban areas. The causes of the marke...
Nitrogen in Soil Water
Nitrogen Soil Water
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2009/10/28
This review comprises a general description of nitrogen in soil water and the
use of nitrogen fertilizer. The following investigations on nitrogen leaching
and transformations are described: Investi...
Sediment Transport by Wind and Water
Sediment Transport Wind Water
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2009/10/28
In connection with the 50th anniversary of Aarhus University, 11 September,
1978, brigadier R.A. Bagnold, F.R.S., was conferred the honorary degree of
Doctor of Science. The present paper is the man...
Penetration and Distribution of Tritiated Water in Soils of a Lysimeter
Penetration Distribution of Tritiated Water Lysimeter
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2009/10/28
A lysimeter experiment was carried out to determine the penetration and
distribution of a water pulse applied on the soil surface as a tritium labelled
simulated precipitation (30-60 mm). Three plot...
Drawdowns at the Free Water Table During Pumping Tests in Artesian and Semiarteian Aquifers
Free Water Table Pumping Tests Artesian Semiarteian Aquifers
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2009/10/28
In an earlier paper I have shown an example of how long term drawdowns can
be used for the computation of long term storage in artesian and semiartesian
areas. In most cases the long term storage is...
Application of Soil Water Flow Theory in Field Simulation
Application Soil Water Flow Theory Field Simulation
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2009/10/28
A numerical model based on a finite difference approximation of the basic
differential equation for soil water flow is described. The equation includes a
sink term representing moisture extraction b...
Diurnal Variations in Electrical Conductivity of Water in a Small Stream
Diurnal Variations Electrical Conductivity of Water Small Stream
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2009/10/28
Diurnal fluctuations in electrical conductivity of water have been observed in
a small streBm draining a basin 12 km2 in size. An attempt to explain the cause
of these variations is presented. The t...
Selected Effects of Field Variability on Predictions from a Soil Water Finite Difference Model
Field Variability Predictions Soil Water Finite Difference Model
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2009/10/28
Known field variability of soil hydrologic parameters is incorporated into a
general finite difference scheme for the prediction of near surface soil water
conditions, including runoff. It is shown ...
Correction of Measured Precipitation in the Alps Using the Water Equivalent of New Snow
Measured Precipitation Alps Water Equivalent New Snow
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2009/10/28
The Hellmann heated siphon pluviograph with wind shield shows 56 % less
winter precipitation than measured on a snow board at an altitude of 2,540 m
a.s.1. For the Swiss heated tipping bucket gauge ...
Snowpack Liquid Water Determinations Using Freezing Calorimetry
Snowpack Liquid Water Determinations Freezing Calorimetry
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2009/10/28
Liquid water in a snowpack has been recognized for some time as a quantifiable
variable of hydrologic significance. It is also important in the interpretation
of snowpack microwave remote sensing da...
Simulation of Water Resources Development Projects in the Nam Kam Basin,Thailand
Water Resources Development Projects Nam Kam Basin
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2009/10/28
The Nam Kam basin is located in north east Thailand, discharging into the
Mekong river. At present, a hydropower project has been constructed in the
basin, and Nong Han, a natural lake, is regulated...
The Movement of a Continuously Growing Body of Oil on the Ground Water Table
Continuously Growing Body Oil Ground Water Table
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2009/10/28
Approximative formulas for the movement of a continuously growing body of
oil on the ground-water table are presented and illustrated. The approximations
are many, but the formulas are believed to p...