TM No. 377 



ILLUSTRATIONS (continued) 



Following 

 Page 



Towing Carriage (inverted) Support for a Single 



Ducted Meter 33 



Support for Orthogonally Mounted Ducted Meters 33 



Calibration Run at Converse Tow Tank Using Strip 



Chart Recorder 3I4. 



Calibration Results of End-On Towing Tests with 



Individual and Coupled Meters 35 



Variation of Rg as a Function of 9 for Single Meter 



for Single Meter and OMDUM III 36 



Ratio of Derived Velocities to True Towing Velocity. 37 



Ratio of Horizontal to Vertical Velocities (Uncor- 

 rected) as a Function of 8 ¥ 38 



Velocity Ratios at Various Tow Speeds and Angles of 



©w • ........... 38 



Accelerative Response of Ducted Meter to a Stepped 



Velocity Input 38 



Block Diagram for Raw Data Processing kk 



Schematic Illustration of Wave Velocity Data Pro- 

 cessing. U5 



Behavior of Chi-Square for Increasing Degrees of 



Freedom , 52 



Various Modes of Wave Motion Observable with the 



Different Wave Meters 6l 



Calibration Curve Showing Inverse Relationship Be- 

 tween Flow Speed and Time Spacing of Voltage 



Pulses 6U 



III-6. Estimated Error in the Determined Velocity as a 



Function of Velocity 65 



III-7- Auto-spectra of Original and Re-read Velocity Data.. 66 



III -8. Plot of Uninterpolated and Interpolated Velocity 



Data (BBELS -11, Serial O57A, 0-5m).. 68 



III-9« Plot of Uninterpolated and Interpolated Velocity 



Data (BBELS -11, Serial 0^0, 3.5m) 69 



IV-1. Location of NUWS Pier in East Passage of Narragan- 



sett Bay 72 



IV -2. Auto-Spectra and Co-Spectra of u and w Particle 



Velocity Data Obtained with OMDUM I 73 



IV-3- Location of Buzzards Bay Entrance Light Station 



(BBELS ) . Jk 



IV-U. East Side View of BBELS Platform 75 



