Grouting a Dam Cutoff in Cavernous Limestone
Cutoff treatment at Logan Martin Dam was especially important in providing a stable and watertight foundation. Complex cavity systems occurred in the fractured dolomitic limestone bedrock....

Weather Modifications, University of Wyoming
A general description is given of the weather modification research conducted by the Natural Research Institute of the University of Wyoming for the purpose of precipitation increase....

River Flood Flows, Forecasts and Probabilities
River flows are forecast from meteorological and snow data. The forecasting system is based on an analogy with a highly damped spring mass system, the input to this system being the snowmelt...

Long Range Potential of VTOL Aircraft
The application of VTOL (Vertical Takeoff and Landing) to short haul aircraft, supersonic transports, and space launchers are described. VTOL potential as a means of providing a new and...

Irrigation Planning Using Climatological Data
A number of water balance models are available that use climatological data. Several research workers have used models of this type for irrigation planning. It is shown that this method,...

Weather Modification
A review is given of the current status of attempts to increase precipitation by artificial means. Major research efforts are being made on this problem, both in the United States and...

Civil Aviation to 1970
For the period to 1970, an increase of up to 2-1/2 times the 1960 passenger-mile traffic is expected. Increase in air freight is more uncertain and will depend primarily on the extent...

All-Weather Landing Systems
The development of an all-weather landing system will require several intermediate steps to assure the reliability of the procedures and equipment. The feasibility is examined for both...

Runway Visibility in Thick Fog
The need to determine the visual range in thick fog is critical. To safely land and take off aircraft in heavy fog, adequate visual aids must be provided. Because of the inconstant nature...

Estimating Forced Evaporation from Cooling Ponds
Forced evaporation from cooling ponds can be estimated with reasonable accuracy from readily available information. The only data needed are the amount of heat added by the plant, and...

Studies of Severe Rainstorms in Illinois
Data from concentrated rain-gage networks were used to investigate area-depth relationships for basins with areas ranging from 5 sq mi to 500 sq mi; empirical mathematical formulas were...

Forecast of Air Transport for 1980
Considerations in design of passenger, baggage, and aircraft handling facilities, runway, taxiway, and ramp area, and all-weather operating facilities to meet growing peak-traffic demands....

Method for Estimating Consumptive Use of Water for Agriculture
Monthly and annual estimates in planning of irrigation projects; data on measured rates of consumptive use of water and on estimated consumptive use determined by various formulas; procedure...

Weather Modification: A Symposium: Seeding of Clouds in Tropical Climates
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Evaluation of Seeding Trials
Results of cloud-seeding program, from customer's standpoint, should be evaluated in terms of his desired end product: kilowatts, bushels of grain, or pounds of meat; evaluation should...

Seeding of Clouds in Tropical Climates
Warm-cloud seeding with spray or hygroscopic particles often dissipates small clouds but often initiates or increases rainfall from clouds that exceed 4000 ft in depth; seeding with dry...

Physical Properties of Clouds
Results of tests on physical evaluations; evaluations included: precipitation development, temperature of region of first precipitation, dimensions of cloud required for precipitation...

Cloud-Seeding Results in Santa Clara County
Description of cloud seeding experiment conducted during three consecutive winters starting with 1955-56; analysis of results shows probable increase in rainfall due to cloud seeding of...

Generator Technology for Cloud Seeding
Experiences in development and calibration of solution burning- and string-type silveriodide generators for use on Project Skyfire lightning-suppression studies....

The Nature of Cloud Systems
Cloud systems suitable for modification by seeding; mechanisms of precipitation formation and results obtained from seeding various types of clouds....

 

 

 

 

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