Ausbreitung von Island Schottland Überstromwasser im östlichen Nordatlantik Eastern North Atlantic ISOW Tracer Transport variability deep water. The spreading of Iceland Scotland Overflow Water (ISOW) in the eastern North Atlantic is the focus of this thesis. It is shown that the classical pathway of ISOW through the Gibbs Fracture Zone into the western North Atlantic is not the only one on which it is spreading. Anomalies of salinity oxygen and silica are used to reveal the influence of ISOW on the northeastern North Atlantic. It can be seen from the anomalies ...