CONTENTS 



Page 



I. INTRODUCTION 7 



1. General Concepts . . 7 



2. Background and Objectives 9 



II. TOWED OCEANOGRAPHIC DATA ACQUISITION SYSTEM (TODAS) .... 11 



1. Sea Sled 11 



2. Instrumentation 22 



III. POWER REQUIREMENTS 30 



1. Electronics 30 



2. System Calibration 41 



IV. EXPERIMENTAL DESIGNS 46 



1. Continuous Surveys Along Shore-Normal Profiles 46 



2. Fixed-Point Measurements 56 



3. Fixed-Point Measurements Combined with Lagrangian 



Techniques 56 



4. Aerial Photography 61 



V. CONCLUSIONS AND RECOMMENDATIONS 68 



LITERATURE CITED 69 



APPENDIX 71 



TABLES 



1 Scan rate selections 39 



2 Timed start intervals 36 



3 Comparison of scans-record times records-file versus time of 



recording 42 



4 Properties of water-tracing dyes 62 



FIGURES 



1 Sea sled 10 



2 R e versus z/d versus Cq 13 



3 Distribution of ,,, 1 "^ , du/dt, case 5-B 14 



(.H/ I J 



4 Distribution of U max , du/dt, case 3-D 15 



5 Case 5-B, fp and f^ versus phase angle 16 



