UNCLASSIFIED 



Security Classification 



(Security < 



DOCUMENT CONTROL DATA - R&D 



ORIGINATIN G ACTIVITY (Corporate author) 



Navy Electronics Laboratory 

 San Diego, California 92152 



UNCLASSIFIED 



3 REPORT TITLE 



PHOTO ANALYSIS OF SEA FLOOR MICRORELIEF 



DESCRIPTIVE NOTES (Type of report and Indus 



Research Report 



5 AUTHORfS; (Last nan 



Shipek, C. J. 



6 REPO RT DATE 



26 April 1966 



36 



SR 104 03 01 

 Task 0539 

 NEL L40161 



1374 



JRT NOfSJ ("Any other numbers that may I 



10 AVAILABILITY/LIMITATION NOTICES 



DISTRIBUTION OF THIS DOCUMENT IS UNLIMITED 



II. SUPPLEMENTARY NOTES 



12 SPONSORING MILITARY , 



Bureau of Ships, Department of the Navy 

 Washington, D. C. 2036 



13. ABSTRACT 



Over 700 NEL sea floor photographs, obtained intermittently over a 10-year 

 period, in a wide variety of environments, have been analyzed. Five major 

 types of bottom microrelief, on the basis of origin, have been defined; a numeri- 

 cal scale of microroughness has been developed and ratings predicted for normal 

 bottom environments; and zones of isoroughness have been delineated for large 

 portions of the Pacific and adjacent ocean areas. 



DD ,^1 1473 



0101-807-6800 



UNCLASSIFIED 



Security Classification 



