Deutsche Hydrographische Zeitschrift - German Journal of Hydrography 
156 
depth [mj depth [mj 
salinity [PSU] 
34.715 34.720 34.725 34.730 
t-pot [grd C] 
t-pot [grd C) 
salinity [PSU] 
34.715 34.720 34.725 34.730 
t-pot [grd C| 
Fig.6: Near-bottom CTD profiles of stations 8, 9, and 
10 showing potential temperature (solid line) 
and salinity (broken line). The arrows mark the 
top of an eroded bottom mixed layer. The small 
arrow at station 9 marks the top of the present 
BML. The position of the stations is shown in 
Fig.2. 
three profiles were taken at the SEDIPERU site with 
a KMS 6000 multisonde manufactured by ME Mee- 
restechnik Elektronic (Fig. 6). One profile was taken 
on top of a 250 m hill, another one at the foot of the 
hill running 1.5 nm to the east, and a third profile 
another 1.5 nm to the east in the abyssal plain very 
close to the MK1 position (see Fig. 2). Profiles 9 and 
10 stopped at about 2-3 mab, profile 8 at about 
10mab because an additional chemical sampling 
system hung suspended from the CTD. All profiles 
were taken within 12 hours in a period of extremely 
low velocities. Nevertheless, there is a weak BML of 
at least 150 m height at all positions. The top of the 
BML is indicated by an arrow in Figure 6. It is the 
point where the slope of the curve changes due to 
bottom mixing. If the BML were homogeneously