Mapping of water masses in the North Sea using radioactive tracers

摘要

The study of radionuclides lies at the origin of the considerable advances that have taken place in modern oceanography: the physical and chemical properties of radioactive elements make it possible to monitor their passage through the environment on many different scales in both space and time. In particular, the use of artificial radionuclides that are soluble in sea water has made possible an identification of the water masses entering the North Sea. By studying the overall circulation of these waters and mapping their rates of renewal in a natural situation, essential information may be obtained for assessing the impact of releases - whether controlled or accidental - in a part of Europe showing intense economic activity.