MARTIN/PERRONE : GEOGRAPHICAL VARIATION OF AMBIENT NOISE IN THE OCEAN 

 FOR THE FREQUENCY RANGE FROM 1 HERTZ TO 5 KILOHERTZ 



Dr. I. Dyer (Department of Ocean Engineering, Massachusetts 

 Institute of Technology): Let's ask Dr. Hersey if there is any chance 

 of doing that. 



Dr. J. B. Hersey (Office of Naval Research): I think it's sort 

 of unfortunate that we are not well prepared to illustrate to you the 

 dimensions of the data bank that is accumulating with these buoys that 

 contain several hydrophones distributed through the water column. 

 I'm going to try to get with Earl Hays before this evening and see 

 whether we don't have a few of the feeble little things we have done 

 in just the direction that you are talking about. 



The data bank is immense, just overwhelming, with recordings 

 from which we can make measurements of the sort you are describing, 

 and I expect if Roy Gaul (of LRAPP) were here, he would say 'he 

 already had three contracts let to do that. 



But, you know, we are in this field. We're constantly in sort 

 of a state of rolling with the punch. This is a punch that many 

 people in this room, say like a third of us, must have been aware 

 of for a long time. But the opportunity is here right now. We can 

 do this. 



I think it is part of the responsibility of this workshop to do 

 just the sort of thing that Beau Buck has just called on us to do, 

 and it is not just in this field. We should be thinking hard about 

 other questions. What do you do about the significance of time 

 series? How do you want to take time series? And a whole series 

 of questions that can be prioritized in the transmission field. 



Mr. Martin: As Dr. Hersey said, we have got a data bank that 

 is probably immense and overwhelming and probably very inadequate 



837 



