65 



It is evident from the tabulated data that the higher 

 the dilution at the diffuser, the greater the possibility 

 that the field will tend to attain a subsurface level of 

 equilibrium,, Also, the warmer the mixed effluent -shelf 

 water, the more likely the tendency for the column to pene- 

 trate through to the surface. The best conditions for 

 suppression should occur during the summer and this is the 

 season for which such an event would be most welcome from a 

 publicity and health point of view. However, the differ- 

 ential in all cases is a delicate one. It is quite certain 

 that the column will tend to rise above its level of equili- 

 brium initially due to is momentum. Thus, a large differ- 

 ential in density must be present to insure the subsurface 

 spread of the mixed water. The critical factors would appear 

 to be the dilution achieved in the diff users and the temper- 

 ature of the mixed water „ 



THE AREAL DISTRIBUTION OF WATER TEMPERATURE 

 AND RELATED WATER MOTION 



Introduction 



The areal distribution of temperature in coastal waters 

 is of interest in many phases of the marine sciences, but in 

 this study its main value is in the interpretation of water 

 motion in Santa Monica Bay, The flow of ocean currents in 

 the bay and the distribution of the various water units derive 

 their importance from the necessity of determining with some 

 degree of accuracy the motion of the proposed sewage field. 

 Because of this importance and the fact that any decision as 



