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This report presents and interpretation of results obtained during the hydraulic model study previously documented in "Hydraulic Modeling of Thermal Outfall Diffusers for the San Onofre Nuclear Power Plant" which described the hydraulic laboratory studies conducted to investigate outfall configurations for the thermal discharge from proposed Units 2 and 3 at the San Onofre Nuclear Generating Station, jointly owned by the Southern California Edison Company and San Diego Gas and Electric Company. A number of different experimental investigations were performed to develop the conceptual design for the new Units 2 and 3 discharge diffusers. The primary reason for the investigations was the new California thermal standards (essentially ambient temperature increment less than 4°F), which in effect precluded the use of shoreline or single outlet discharges for new units and necessitated the use of multiport diffusers. The result of the investigations of different diffuser concepts was the establishment of a preliminary design for the discharge structures for Units 2 and 3, each consisting of a diffuser 2500 ft long containing 76 discharge nozzles with a nominal discharge velocity of 13 ft/sec. This preliminary design was later modified somewhat by the engineers of the Southern California Edison Company (SCE) in consideration of other factors such as structural requirements, cost, construction problems, and more accurate bathymetric details at the site. As a result the final design for each diffuser contains 63 discharge ports of diameters varying from 21.85 to 23.9 inches. The discharge ports are nozzle-riser assemblies at alternate angles of ±25° with respect to the longitudinal axis of the diffuser and 20° up from horizontal. The nozzles are positioned approximately 6 ft from the ocean bottom. The diffusers are aligned perpendicular to shore and extend from approximately 3500 ft to 8500 ft offshore. The performance of the final diffuser design was evaluated in a series o

The volume presents new theoretical developments of two problems. The first is the determination of the waves resulting from the passage of a high-pressure disturbance over the free surface of a body of water. This would occur in the case of a burst on or over land near a shore and is, therefore, of interest to the Five City Study in which three nuclear surface bursts are near rivers or bays. The second topic is motion of the ground water table induced by a surface burst. This problem is of interest for the determination of the migration of radioactive contaminants and is also applicable to three cities of the Five City Study. (Author)

This study is a contribution to a larger project for studying the 'Modification of Wave Spectra on the Continental Shelf and in the Surf Zone.' Prior to dealing with a wave spectrum, a study of nonlinear effects on periodic waves appears to be necessary. For this purpose it is assumed that both friction effects and reflection effects are small. Then the principle of conservation of energy flux is applied to a periodic wave. This calculation has already been applied to a Stokes wave (periodic irrotational) to a third order of approximation (Le Mehaute and Webb, 1964). The purpose of this report is to perform the calculation up to the fifth order and to compare the corresponding result, with the third and first order of approximation. It will be the purpose of another (pending) report to present the limits of the principle of conservation of energy flux and to present a method of calculation which takes also into account bottom friction and reflection effect as well as nonlinear effects consistently. (Author)

By using the method of conservation of energy flux between wave orthogonals, the breaking wave characteristics are obtained for waves traveling obliquely to the bottom contours of a straight shoreline. The results of the calculations are presented in the form of nomographs by using the linear and third order irrotational gravity wave theories. Three different breaking criteria are used in these calculations. In particular, a new breaking criterion is proposed for waves breaking on a gentle slope. Some calculations are also performed at the fifth order of approximation and the results compared with the linear and third order cases. (Author)