1 DR. HECKER: At least the data from Baltimore Canyon seems to show 



2 that it is not just--you know, it is always the thought that you've got 



3 material going from the shelf to the canyons down the slope and you get 



4 this feeling of a sort of chute. 



5 Basically, what Brad showed with regard to Baltimore Canyon is 



6 that you are affecting the whole water column, actually, because you are 



7 invecting material out at all areas due to the resuspension, 



8 particularly near the canyon head. Your resuspending then gets invected 



9 out. 



10 DR. BUTMAN: Ken and Will showed that stuff. 



11 DR. HECKER: This was some work done at Lament with regard to some 



12 work I was doing in Baltimore Canyon. Their feeling was that it was not 



13 just going out to deeper water but, in fact, material was coming out of 



14 the canyon and then was being picked up by the currents and being 



15 carried along the slope. 



16 In fact, rather than having material moving out straight this way, 



17 you've got material coming out into the water column and then it is 



18 going out along the slope, also, as well. 



19 DR. BUTMAN: I think a reasonable hypothesis might be that canyons 



20 are leaky traps. That's what you're saying. 



21 DR. HECKER: I am saying it is not that straightforward. You are 



22 affecting the water column and you are affecting the slope on the west 



23 side. 



24 In fact, some of my data with regard to the distribution of filter 



25 feeders, particularly in Baltimore Canyon, where it is very--where the 



26 axis bends, you've got a much higher concentration of filter feeders on 



27 the west wall which would add into fine material coming right--being 



28 invected out there that way. 



29 There is a bunch of evidence that seems to show that there is an 



30 accumulation out on the west wall, at least down in that canyon. 



31 DR. TEAL: That supports the idea that it doesn't all just 



32 accumulate there. 



33 DR. BUTMAN: That's right. 



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