a rather thick accumulation of sediments to 

 cover its surface in contrast to a thin veneer of 

 sediment covering bedrock on the upthrown north- 

 western block. 



FACTORS AFFECTING OZONE CONCENTRATION IN 

 A MARINE ATMOSPHERE 



Dr. Lyman A. Ripperton 

 University of North Carolina at Chapel Hill 



ABSTRACT 



Ozone and organic zerosol samples, and supporting meteoro- 

 logical data, were obtained in the vicinity of the Virgin 

 Islands for use in characterizing the behavior of ozone 

 concentration in a marine atmosphere. Ozone measurements 

 were made at two levels above the sea surface using a 

 chemiluminescent type ozone meter. A measure of visibility 

 was obtained using a Charlson Integrating Nephelometer, and 

 samples of aerocollodial material was obtained using a Goetz 

 Moving Slide Impactor. Solar radiation was monitored with 

 a Kipp-Zonen Radiometer. Gas samples were obtained through a 

 Teflon line with the intake positioned in an uncontaminated 

 area. Analysis of the data has not yet been completed. 



GEOLOGICAL SEDIMENT STUDY 



Dr. Alan Lewis Smith 

 University of Puerto Rico at Mayaguez 



ABSTRACT 



This project was not completely successful, since the ADVANCE 

 II only had enough cable to dredge the upper levels of the 

 submarine topographic highs. The only rocks dredged were 

 carbonate rocks. Some, as from the Anegada Bank, appear 

 to be recent fairly shallow water sediments. From the 

 Groppler and Investigator Banks, however, limestones were 

 obtained which initially show similarities to the Tertiary 

 limestones of southern Puerto Rico. Samples of volcanic 

 rocks which are supposed to underlie these limestones were 

 not obtained, since the dredging capability was limited. 



VII-42 



