1 or two canyons and, for those, only for the heads. We haven't really 



2 talked about the deeper parts. 



3 DR. GRASSLE: You are thinking of the physical attributes? 



4 DR. BUTMAN: Yes. 



5 DR. GRASSLE: The physical information. 



6 DR. COOPER: I just want to say from the fisheries and habitat 



7 types, we have got a lot more. 



8 DR. GRASSLE: Right. 



9 DR. BUTMAN: Even then, only primarily at the head. They have a 



10 little more information deeper. 



11 DR. AURAND: This makes extrapolation difficult or do you just 



12 want to leave it at that? 



13 DR. BUTMAN: I think that--yes, I think that limits our ability to 



14 predict effects on the deeper parts of the canyon. 



15 DR. AURAND: You obviously have drawn some conclusions, so while 



16 it may limit your ability-- 



17 MR. LANE: Remember, the purpose of this was to look at biological 



18 impact and most of the biota concerned are within a 2 to 3 hundred meter 



19 depth; I guess that's why these conclusions were drawn. 



20 DR. BUTMAN: I don't think that Barbara would say that at all; I 



21 think it's throughout the whole canyon. 



22 DR. BOTHNER: The other reason for looking deeper in the canyon 



23 would be to see if the processes of, say, accumulation in the canyons 



24 also translates to periodic accumulations downslope for some reason. 



25 We don't find much accumulation and we don't expect much 



26 accumulation in the head of the canyon, but there may be some further 



27 down. That would be a reason for looking deeper in the canyons to look 



28 at the mass balance of sediments; that would be very useful in 



29 understanding the whole system. 



30 DR. COOPER: What is MMS' desire here? Are you interested, as we 



31 are, in the entire canyon or are you just interested in the commercial 



32 species? 



33 DR. AURAND: I am not quite sure how to answer that. We are 



34 interested in the system and any possible impact we might have on it. 



348 



