CONTENTS 



Page 



CONVERSION FACTORS, U.S. CUSTOMARY TO METRIC (SI) 6 



I INTRODUCTION 7 



II DATA COLLECTION AND ANALYSIS 7 



1. Sediment Cores 9 



2. Hydrosurveys and Surface Sand Samples 10 



3. Coastal Process Observations 11 



III FILLING HISTORY 12 



IV TEXTURAL CONSIDERATIONS 20 



V SAMPLING MID SEDIMENT TEXTURE 23 



1. Sampling 23 



2. Sediment Textures 24 



3. Coring and "Envelope" 28 



VI BEACH-FILL CONSIDERATIONS 31 



1. Beach-Fill Models 31 



2. Dredging and Sediment Bypassing .31 



VII CONCLUSIONS 32 



LITERATURE CITED 34 



APPENDIX PHI MEAN AND PHI SORTING VALUES FOR CORE SEDIMENT SAMPLES ... 35 



TABLES 



1 Trap maintenance history 9 



2 Vibracore specifics 10 



3 Survey and sand sample history 11 



4 Summary of the rates, volumes, and associated wave energy factors . . 19 



5 Beach-fill model comparisons 32 



FIGURES 



1 Location map showing coastal physiography 8 



2 Cross sections of cored trap-fill sediment thicknesses 13 



3 Cross section of cored native beach sediment thicknesses 1^ 



4 Sequential filling history of sand trap 15 



5 Composite phi mean maps of core and grab sediment samples 21 



4 



