1 We've never tried to pursue that and quantify what the real loss 



2 would be. In some of Booth's work, it was very interesting, he raised 



3 some very interesting questions. 



4 In trying to do mass balance work on the Gulf of Mexico, it 



5 doesn't all add up, you know, making liberal guesses as far as transport 



6 off the shelf, depth of barium distribution in the vertical profile in 



7 the sediments, the amount going in and everything else, it doesn't add 



8 up. 



9 There's not as much there as there should be. It is much less 



10 than you would predict would be there, based on the volumes both from 



11 the industry versus the estimates of what nature's putting in. It 



12 doesn't all add up. 



13 We haven't gone any further with trying to answer those questions, 



14 but Paul would love to have someone ask him that question, because he's 



15 real interested in it. 



16 Thank you. 



17 DR. MACIOLEK: Before I introduce the last speaker of the morning, 



18 I'd like to just mention that Bob Ayers will be here tomorrow and is 



19 planning to give his talk first thing in the morning before the panel 



20 session starts, so his talk will be at 8:00 tomorrow morning. 



21 Our last speaker for this morning is Dr. Michael Bothner from the 



22 Geological Survey in Woods Hole. His presentation is on "The Flux and 



23 Composition of Resuspended Sediments in Two Submarine Canyons from the 



24 Western North Atlantic: Implications for Pollutant Scavenging." 

 25 



26 PRESENTATION OF DR. MICHAEL H. BOTHNER 



27 



28 DR. BOTHNER: Thank you, Nancy. 



29 (Slide presentation.) 



30 This is sort of an unusual topographic perspective to just give 



31 you a look at our study area here in the North Atlantic off the New 



32 England States. I show it just to illustrate that there are a large 



33 number of canyons in the sides of the southern flank of Georges Bank. 



59 



