1 least at that depth some kind of exchange with the slope waters in the 



2 region of 200 to 300, essentially the depth of the canyon rim. 



3 On the adjacent slope we saw westward flow when eddies were not 



4 present, and strong eastward flow when Gulf Stream eddies were present. 



5 If now calculate the sediment transport around the head of the 



6 canyon, I apologize for the quality of the slide here, but we've taken 



7 the measurements that were around the head of the canyon, on the shelf, 



8 used the current-meter data and a sediment-transport model to calculate 



9 the net direction of sediment transport. 



10 These are oriented schematically in geographic orientation with 



11 respect to the head of the canyon. On the shelf we see essentially 



12 westward sediment transport in the direction of the mean flow with a 



13 slight off-shelf component. 



14 At these four stations around the canyon rim, we see a convergence 



15 toward the head of the canyon, at both the station at the head and to 



16 the west we see flow into the canyon and also at the two stations to the 



17 east. 



18 So, at least for this deployment period we see transported shelf 



19 sedimentS'-sediments on the shelf, into the canyon axis. 



20 We've done the same thing along the canyon axis. There the 



21 pattern is a little bit more variable. We had three stations along the 



22 axis, B at 300 meters, S at about 500, and E at about 550. For 



23 different deployments, as I mentioned, we had five deployments at each 



24 one of these locations, at B we saw--in one case we saw almost no 



25 transport and the second deployment we saw some down canyon transport. 



26 At S we saw very strong up canyon transport, and at E we saw- -in 



27 one deployment we saw down canyon transport and the other case we saw 



28 very little transport. 



29 If you try to put that in a schematic cross-section, we have the 



30 following picture. Just look at the bottom flows, near the head we saw 



31 down-canyon transport, at the mid-depths of the canyon we saw up-canyon 



32 transport, and at about 500 meters we weak or little transport. 



33 This suggests, anyway, a convergence towards the head of the 



34 canyon of near-bottom transport. I'd like to caution, though, that 



25 



