12 
3 
HYDROGRAPHY (G,Becker, K.,Huber, E,Mittelstaedt) 
1. Methods 
The-main part of the measurements were made during two 
5-days permanent stations close to moored current meter 
arrays (Fig. 2). The water depth at the station (1) was 
500 m. The station (2) was located on the shelf (water 
depth 150 m), 
During the permanent stations (1} and (2) temperature, 
conductivity and pressure were measured hourly using the 
Bathysonde (Howaldt Kiel/FRG), During every measurement 
a sampling bottle with reversing thermometers was attached 
about 5 m above the CTD sensors, The bottle was tripped 
at different depths, The comparison between the values 
of the Bathysonde and the bottle resulted in a mean 
temperature difference of 
PM 
STD * Tbott 
„09“ 
2 
a 
zz 
and a econductivitvy factor of? 
X 
„botk = + „07 + 
°CTD i 
1 
Every day 2 - 3 serial observations were made at the 
stations, mainly to determine the oxygen content, To 
analyse the oxygen, the modified Winkler method was 
used, In table II and IIX the serial observations are 
shown, A surface bucket sample was taken every hour in 
order to measure the surface temperature and to draw ä 
water sample. Moreover, wind, air pressure and air tem- 
perature were observed every hour at the stations, 
Before starting the stations a survey was made 
within 4 days to find out the hydrographic conditions 
in a larger vicinity of the moored arrays (Fig, 1), The 
sections on this survey were mainly occupied by XBT 
measurements and occasionaily by observations with the