Measurement of Wave-Induced Turbulent Flow Structures Using Digital Image Sequence Analysis
The turbulent flow in water close to the wavy wind-stressed water surface has been examined quantitatively in a large circular wind-water tunnel with a flow visualization method using...
Measurement of Reaeration Coefficient with the Soluble Solids Probe
The results of analytical and experimental studies are presented, showing that the proposed method for indirect determination of gas transfer coefficients at gas-liquid interfaces, based...
A Gas Chromatographic Protocol for the Measurement of Krypton Gas in Water
This paper presents the results of a study to investigate the feasibility of using a gas chromatographic (GC) technique for the measurement of non-radioactive krypton gas concentrations...
Measurement of Stream Reaeration Rate Coefficients Using Propane Gas
Three determinations of the reaeration rate coefficient, K2, were made on a 1185-m reach of the upper Assabet River in Westborough and Northborough,...
Dissolved Oxygen and Woody Debris: Detecting Sensitive Forest Streams
Early watershed studies showed that timber harvesting and yarding could depress dissolved oxygen in nearby streams when fresh slash entered streams and streamside shade was reduced. State...
Gas Transfer Measurements on an Ice-Covered River
Wasteload allocation for existing and proposed pulp mills in the Athabasca River Basin of northern Alberta, Canada, necessitated measurement of the atmospheric reaeration rate, K2,...
Characteristics of Low-Slope Streams that Affect O2 Transfer Rates
Multiple-regression techniques were used to derive the reaeration coefficients estimating equation for low sloped streams: K2 = 3.83 MBAS-0.41...
Development of an Expert System for Estimating Stream Reaeration Rates
This paper describes a data base of measured reaeration coefficients organized to assist users with estimating coefficients for rivers and streams with hydraulic characteristics similar...
Carbon Dioxide Pressure in Surface Waters of Canadian Lakes
Direct measurements of the partial pressure (pCO2) of carbon dioxide were made in lakes of three study areas: ELA (the Experimental Lakes Area) and...
Gas Transfer at Hydraulic Structures
The objective of this paper is to identify and briefly summarize the state-of-the-art in measuring and describing gas transfer at hydraulic structures. Basic theory of mass transfer at...
Oxygen Transfer in Turbulent Shear Flows
Oxygen transfer equation for the air-water two-phase aeration region of turbulent shear flow in a vertical pipe is derived. Dimensionless variables significant in characterizing the transfer...
A Simple Empirical Model of Aeration at Navigation Dams
In a study of aeration at 28 dams in the upper Ohio River basin, site-specific least-squares linear regression models were used to describe the dissolved oxygen deficit below each dam...
Mechanical Aeration System Design for Reservoir Tailwater Enhancement
Low dissolved oxygen (DO) concentrations in tailraces below hydropower facilities has been identified as a problem at some projects during nongeneration periods. One technique which may...
Experiment on the Efficiency of an Aspirator-Blower Type Aerator
An aspirator-blower type aerator was designed and tested successfully for small lake application. The experiment showed that significant amount of air flow can be generated by the aspirator...
Water Surface Flow and Exchange Induced by a Bubble Plume
Aeration is a common method to increase dissolved oxygen in the water of stratified (or non-stratified) lakes. In this method compressed air is injected at some depth, and gas is transferred...
Oxygen Mass Transfer to Flowing Ground Water Using Oxygen Microbubbles
Mass balance and transfer of oxygen has been studied from oxygen microbubbles to low dissolved oxygen ground water passing through variously configured pilot scale vertical slice test...
Ground Water in the Pacific Rim Countries
This proceedings,
Symposium on Ground Water
This proceedings,
Determination of Vertical Leakage for Nile Valley
The determination of vertical groundwater leakage is particularly important for irrigated agriculture where adequate drainage is required to prevent high water tables and related problems...
Conflict in Water Management of James River, ND
Delivery of water from storage in Jamestown Reservoir to 898 acres of newly developed irrigation along the lower James River by the U.S. Bureau of Reclamation during the drought of 1988...
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