The expedition ARCTIC '93 - Leg ARK-IX/4 of RV 'Polarstern' 1993

Abstract

The multidisciplinary scientific program aboard Polarstern included four major objectives: (1) The marine geology program focused on sampling sediments of the Eurasian continental margin for high resolution paleoclimate and paleooceanographic studies. (2) The main topic of the marine biological investigations included the comparison of different ecological conditions of the permanently ice-covered regions of the northern Barents and Laptev seas. (3) The sea-ice program focused on: (i) Ice physics such as growth processes of sea ice, its structure and properties; (ii) ice biology including abundance of organisms in sea ice, structure and dynamics of the food web as well as the coupling processes between sea ice and the pelagic environment and (iii) ice-transported sediment as a major process for ARCTIC Ocean sedimentation. (4) The oceanographic program focused on the specific role of the different Eurasian shelf seas in forming surface and subsurface water masses and on quantifying their relative contributions. This has been done by sampling the fission product tracers T, C-14 and Kr-85. (orig.)Available from TIB Hannover: RN 9219(149) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekSIGLEDEGerman