1 be higher temperatures? Temperature is another good variable to look 



2 at. 



3 DR. TEAL: Not for higher biomass. For periodic activity and 



4 things like that or trapping success, I wouldn't buy it just because the 



5 temperature is higher there than it is next door. 



6 DR. HECKER: No, we were talking about the patchiness with regard 



7 to the high degree of fauna! patchiness. Some of it I can relate to 



8 geology; other things I cannot- and I really strongly feel it is related 



9 to physical processes. 



10 On Baltimore Canyon, the west wall, specific areas of the west 



11 wall correlate with where lenses of fine material are coming out. It 



12 was that sort of thing that Brad and I were talking about with regard to 



13 Lydonia. 



14 DR. COOPER: Are you likely to have vertical turbulence in these 



15 canyonheads that would mix superficial water at depth and cause this 



16 increase in temperature? 



17 DR. BUTMAN: We looked at that a little bit in Lydonia Canyon and 



18 there was the suggestion that the vertical mixing compared--if you look 



19 at the TS properties of the water and you try to look at over what water 



20 depth, over what thicknesses the water is actually vertically well 



21 mixed, it looks like it is more well mixed in the canyonheads than at 



22 comparable depths, I would say the mouth of the canyon. 



23 There is actually pretty good evidence for vertical stirring, 



24 which goes in, you know, which matches the resuspension ideas, also, 



25 that those are much more energetic and that you do get enhanced vertical 



26 mixing. 



27 The proportions of that, you know, how much shelf water you 



28 actually mix with slope water, we don't know, but there is some evidence 



29 which says there is initial mixing. 



30 DR. COOPER: These fishermen are fishing and making their big 



31 catches winter after winter down to depths of about 200 meters, so it is 



32 fairly shallow. 



33 DR. BUTMAN: The problem is that the 200 meters is the basic 



34 shelf/slope water front, also, at 150 to 200 meters. The biggest thing 



208 



