CONTENTS 



Page 



Section I. Introduction 1 



II. Preliminary Considerations 2 



A. Bar Formation 2 



B. Depth and Form of Bars 4 



III. Equipment and Procedure 5 



IV. Results of Laboratory Experiments 9 



V. Field Observations 19 



A. Form and Dimensions of Natural Bars 19 



B. Lake Michigan Bars and Observed Waves 20 



VI. Factors Affecting Mechanism of Bar Formation and Move- 

 ment 24 



A. Sand Transportation on Smooth Beaches 24 



B. Sand Transportation and Sand Ripples 29 



C. Extreme Water Surface Variations in the Bar Environ- 



ment 33 



D. Energy Distribution in the Bar Environment 35 



VII. Acknowledgment 39 



(V) 



