2. All significant changes in beach profile configuration can be 

 related to the incident waves, tides, and to local storms with strong 

 onshore winds. 



3. Formation of a summer beach profile configuration is the result 

 of a progressive onshore migration of sand from depths of less than -33 

 feet (10 meters) which accretes on the beach face. 



4. The summer beach profile is characterized by a pronounced berm 

 crest which is produced by the progressive accretion of sand starting 



as a bar at depths of -3 feet (-1 meter). 



5. The summer beach profile configuration did not fully develop 

 until October in 1972 and 1973 when the berm crest was prograded the 

 farthest seaward and beach face slope was the steepest. 



6. The change from summer to winter profile configuration occurred 

 abruptly with the coincidence of high waves and spring high tides in 

 November 1972. 



7. At the time of high waves and tides the summer profile berm 

 crest was easily overtopped by wave runup and the upper foreshore 

 quickly eroded. 



8. Most of the sand transported offshore during the winter seasonal 

 change was removed from the beach face during the few days when high waves 

 and tides were coincident. 



9. Sand transported offshore during the winter seasonal change in 

 profile configuration was deposited in depths of -10 to -30 feet (-3 to -9 

 meters) . 



10. There were no recorded sand level changes at depths greater than 

 -45 feet (-13.7 meters) on the deeper reference rod stations at Indian 

 Canyon Range. 



11. Comparisons between the visual wave observations and the pres- 

 sure sensor measurements at South Range show that there is agreement be- 

 tween the two sets of data for the angle of wave approach under conditions 

 when there is a single, predominant wave present. Visual observations are 

 much less valid under complex sea conditions. 



33 



