Radiocesium and 129I along the Russian coast. Preliminary results from th Swedish-Russian tundra ecology expedition

During the summer 1994 a joint Swedish-Russian expedition, Tundra Ecology 94, examined the coast of the Siberian tundra. The cruise passed the Barents Sea, the Kara Sea, The Laptev Sea and reached 170o E in the East Siberian Sea. Most of the projects dealt with land based research which lead to a ship route close to the shore. The sampling was performed both offshore and onshore, but with emphasis on sea water and sediment sampling. At approximately 30 stations water samples were taken both at the surface and in near bottom water for the determination of 134Cs, 137Cs, 90Sr, 129I and 239,240P concentrations. At these stations also sediment cores were taken. Some of the results from the expedition are presented in the present paper. 1 fig., 1 tab