102 



and January, a subsurface convergence is indicated offshore 

 from Redondo (Figs. 41 and 42). In January the shoreward 

 moving water appeared to be dominant (Fig. 43), and in 

 December it was that part of the subsurface unit moving to 

 the south along shore which must have had the higher velocity 

 (Fig. 44). In each case, however, there was no reflection of 

 this action in the surface layers. In January, offshore 

 gyrals and a steep thermal slope in the northern part of the 

 bay matched conditions in the surface layers. The December 

 subsurface temperature topography corresponded to that of the 

 surface unit in the near shore area and in the north where 

 slopes were indicative of southerly flow along shore and a 

 flow towards the east from offshore. 



The temperature patterns for April 25, 1956, and February 

 22, 1956, show two differing conditions in which water may be 

 brought in and out of the bay (Figs, 45 and 46)-. On April 25, 

 water should have flowed rather gently into the bay in the 

 north toward Santa Monica followed by a swing to the south to 

 Playa del Rey, and then seaward in a southwesterly direction 

 opposite Hyperion, As this flow entered the area of flat 

 gradients in the south, any current flow should have been 

 due to wind drift, which in this case would have been shore- 

 ward (Fig. 47) . In February, a similar cold water area 

 existed in the north, but in this instance, the isotherms were 

 closely packed in the central part of the bay opposite Hyperion. 

 Water motion should have been rather strong toward the central 

 shore of Santa Monica Bay followed by a turn to the south with- 

 in one or two miles of shore (Fig. 48). In each case, the flow 



