CONTENTS 



Page 



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



SYMBOLS AND DEFINITIONS 7 



I INTRODUCTION 9 



1. Purpose 9 



2. Location and History 9 



3. Physiography and Littoral Processes 9 



4. Past Longshore Sand Transport Relationships 



and Studies 13 



5. Discussion 15 



II DATA COLLECTION AND ANALYSIS 18 



1. Bathymetric Survey Data Collection and Analysis 18 



2. LEO Data Collection and Analysis 24 



3. Wave Gage Data Collection and Analysis 29 



4. Results of Longshore Sand Transport-Longshore 



Energy Flux Factor Correlation 36 



5. Conclusions 38 



LITERATURE CITED 40 



APPENDIX 



A DERIVATION OF EQUATION (9) FOR LONGSHORE ENERGY FLUX 43 



B CALCULATIONS OF LONGSHORE ENERGY FLUX FACTORS 45 



TABLES 



1 Summary of field data available for longshore transport 



correlation and characteristics of resulting K factor 16 



2 Summary of survey data 19 



3 Geometric characteristics of the two-gage array 35 



4 Shoreline orientation as determined from beach and 



offshore profiles 36 



5 Summary of analyzed data 37 



FIGURES 



1 Channel Islands Harbor study area 10 



2 Wave sheltering at Channel Islands Harbor 12 



3 Comparison of field data with present SPM relationship 17 



4 Plot of K versus diameter, D";^ 17 



5 Longshore sand transport study, Channel Islands, 1976-77 18 



