Jahresbericht Nr.14/1959 
Seite 80 
national Glaciological Greenland Expedition, and a sea area to the southeast 
off Iceland was sounded in order to complet the depth data in German charts. 
In addition to her surveying work survey vessel "Stideroog" carried out 
also seven experimental trips which served preponderantly out-tests of 
radar reflectors and of maritime floating emergency transmitters. 
A total of approximately 10 000 sm of usable sounding profiles were run 
by the survey craft including "Gauss". 
The two survey and wreck-searching vessels "Atair" and "Wega" ascertained 
10 new wreck positions in the coastal area and on the official routes of 
the North Sea and Baltic; they re-checked 57 already known wrecks and examined 
18 positions where wrecks could be suspected. Moreover, in the North Sea 
2 2 
55 km , and in the Baltic 17 km were systematically searched for submarine 
obstructions. 
In the field of Geophysics new tasks were waiting after conclusion of 
the International Geophysical Tear, especially hydrographic investigations 
in the Kangerdlugssuaq-Fjord in Western Greenland (within the compass of 
the International Glaciological Greenland Expedition during the IGY). 
Within the frame of a plan which was agreed upon between the Federal 
Ministry of Transport and the Federal Ministry of Economics, further magnetic, 
gravimetric and seismic investigations of the North Sea Shelf were carried 
out in co-operation with the Bundesanstalt für Bodenforschung at Hannover 
(continuation of the investigations made in 1957/58). 
Paddle-wheel current measurements on a total of 30 stations were made in 
the area off the Isle of Sylt in co-operation with the "Landesstelle für 
Gewässerkunde Schleswig-Holstein"; between Heligoland and the mouth of Eiver 
Eider in cooperation with the "Wasser- und Schiffahrtsdirektion Kiel"; and 
in the southern North Sea to the West of the German Bight. 
Observations in light-ships were continued and the routine observations 
on the route Hamburg - Hull were made as usual. Above this, investigations 
on chemico-planktological and bacteriological problems were made in co 
operation with the "Biologische Anstalt Helgoland". 
From the results of the IGY expeditions the salinity, temperature, 
turbidity and oxygen observations won at 510 stations could be processed 
and were represented graphically and in parts transferred to punching docu 
ments. 523 vertical temperature recordings were also prepared for publication. 
As special work the investigations on formation, depth and intensity of 
the summerly temperature discontinuity layer in the North Sea was commenced 
with. Furthermore the results of the bottom investigations so far obtained 
from the North Sea were compiled for publication in "Meereskundliche Beobach 
tungen und Ergebnisse". Work in connection with the preparation of largescale 
bottom maps of the inner German Bight is in progress.