72
Land-Ocean Systems in the Siberian Arctic: Dynamics and History
of the sediments by waves and bottom currents which velocities can reach critical values in this
region.
The concentration of the 137Cs in the sediments has quite good agreement with the bottom
topography of the Laptev Sea and water circulation which determine the location of errosion
and deposition zones.
The ice radioactivity is a topic for further investigations and discussions. According to
measurements, the concentration of 137Cs in the ice of the Chukchi Sea was equal to about 1
Bq/m3, i.e. of the same level as the concentration of 137Cs in water. Also, according to analysis
of soil particles at the bottom surface of the ice, values of 4.9-5.6 Bq/kg dry weight were
obtained (at maximum values up to 73 Bq/kg dry weight) (Meese et a!., 1995). Pavlov and
Stanovoy (1996) roughly estimated the possible export of the radionuclides by drifting ice from
the Kara Sea into the Arctic Basin.
There are not enough data of the concentration of anthropogenic radionuclides in the Laptev
Sea to obtain some conclusions about possible sources and temporal variability of the
radionuclide distribution. It is necessary to continue the field observations and modeling
investigations in this problem.
References
Boykun, L. (1994) Radiochemical observations. In: Russian-Gennan Cooperation: The Transdrift I Expedition to
the Laptev Sea, Kassens, H. and V.Y. Karpiy (eds.), Ber. Polarforsch. 151,52-53.
Josefsson, D., E. Holm, B. Persson and P. Roos (1995) Anthropogenic radioactivity along the Russian coast.
Preliminary results from the Swedish-Russian Tundra Ecology Expedition, 1994. In: Proc. Arctic Nuclear
Waste Assessment Program Workshop, Woods Hole, USA, May 1995.
Kulakov, M.Yu. and V.K. Pavlov (1996) Modelling of the consequences ofradioactive waste discharges from the
Sellafield plant (in Russian). Trudy AANII (in press).
Meese, D., L. Cooper, LL. Larsen, W. Tucker, E. Reimnitz and J. Grebmeier (1995) Radionuclides in the arctic
sea ice. In: Proc. Arctic Nuclear Waste Assessment Program Workshop, Woods Hole, USA, May 1995.
Pavlov, V.K. (1996) Seasonal variability of the water circulation in the Arctic Ocean. (in Russian). Trudy
AANII (in press).
Pavlov, V.K. and V.V. Stanovoy (1996) To the problem of transfer of radionuclide pollution by sea ice. (in
Russian). Trudy AANII (in press).
Pavlov, V.K., L.A. Timokhov, G.A. Baskakov, M.Yu. Kulakov, V.K. Kurazhov, P.V. Pavlov, S.V.
Pivovarov and V.V. Stanovoy (1996) Hydrometeorological regime of the Kara, Laptev and East-Siberian
Seas. - Tecchnical Memorandum APL-UW TM 1-96, Seattle, USA. 179 pp.
Preliminary Report (1993) Preliminary Report of Expeditions to Taymir Peninsula and Laptev Sea in summer
1993 on a board of R!V "Ivan Kireev" and R1I "Polarstern" in the framework of Program Russian-German
Cooperation. (in Russian) AARI, St.-Petersburg, Russia. 384 pp.
Timokhov, L.A. and V.N. Churun (1994) Cold bottom water in the southern Laptev Sea (in Russian). In: L.
Timokhov (ed.), Nauchnye Rezuitaty ekspedicii LAPEKS-93. Gidrometeoizdat, St.-Petersburg, 83-90
Vanda, Yu.A. and A.V. Yulin (1994): Seasonal variability features of ice conditions of the Laptev Sea in
1993(in Russian). In: L. Timokhov (ed.), Nauchnye Rezultaty ekspedicii LAPEKS-93. Gidrometeoizdat, St.Petersburg, 148-157.
Land-Ocean Systems in the Siberian Arctic: Dynamics and History
of the sediments by waves and bottom currents which velocities can reach critical values in this
region.
The concentration of the 137Cs in the sediments has quite good agreement with the bottom
topography of the Laptev Sea and water circulation which determine the location of errosion
and deposition zones.
The ice radioactivity is a topic for further investigations and discussions. According to
measurements, the concentration of 137Cs in the ice of the Chukchi Sea was equal to about 1
Bq/m3, i.e. of the same level as the concentration of 137Cs in water. Also, according to analysis
of soil particles at the bottom surface of the ice, values of 4.9-5.6 Bq/kg dry weight were
obtained (at maximum values up to 73 Bq/kg dry weight) (Meese et a!., 1995). Pavlov and
Stanovoy (1996) roughly estimated the possible export of the radionuclides by drifting ice from
the Kara Sea into the Arctic Basin.
There are not enough data of the concentration of anthropogenic radionuclides in the Laptev
Sea to obtain some conclusions about possible sources and temporal variability of the
radionuclide distribution. It is necessary to continue the field observations and modeling
investigations in this problem.
References
Boykun, L. (1994) Radiochemical observations. In: Russian-Gennan Cooperation: The Transdrift I Expedition to
the Laptev Sea, Kassens, H. and V.Y. Karpiy (eds.), Ber. Polarforsch. 151,52-53.
Josefsson, D., E. Holm, B. Persson and P. Roos (1995) Anthropogenic radioactivity along the Russian coast.
Preliminary results from the Swedish-Russian Tundra Ecology Expedition, 1994. In: Proc. Arctic Nuclear
Waste Assessment Program Workshop, Woods Hole, USA, May 1995.
Kulakov, M.Yu. and V.K. Pavlov (1996) Modelling of the consequences ofradioactive waste discharges from the
Sellafield plant (in Russian). Trudy AANII (in press).
Meese, D., L. Cooper, LL. Larsen, W. Tucker, E. Reimnitz and J. Grebmeier (1995) Radionuclides in the arctic
sea ice. In: Proc. Arctic Nuclear Waste Assessment Program Workshop, Woods Hole, USA, May 1995.
Pavlov, V.K. (1996) Seasonal variability of the water circulation in the Arctic Ocean. (in Russian). Trudy
AANII (in press).
Pavlov, V.K. and V.V. Stanovoy (1996) To the problem of transfer of radionuclide pollution by sea ice. (in
Russian). Trudy AANII (in press).
Pavlov, V.K., L.A. Timokhov, G.A. Baskakov, M.Yu. Kulakov, V.K. Kurazhov, P.V. Pavlov, S.V.
Pivovarov and V.V. Stanovoy (1996) Hydrometeorological regime of the Kara, Laptev and East-Siberian
Seas. - Tecchnical Memorandum APL-UW TM 1-96, Seattle, USA. 179 pp.
Preliminary Report (1993) Preliminary Report of Expeditions to Taymir Peninsula and Laptev Sea in summer
1993 on a board of R!V "Ivan Kireev" and R1I "Polarstern" in the framework of Program Russian-German
Cooperation. (in Russian) AARI, St.-Petersburg, Russia. 384 pp.
Timokhov, L.A. and V.N. Churun (1994) Cold bottom water in the southern Laptev Sea (in Russian). In: L.
Timokhov (ed.), Nauchnye Rezuitaty ekspedicii LAPEKS-93. Gidrometeoizdat, St.-Petersburg, 83-90
Vanda, Yu.A. and A.V. Yulin (1994): Seasonal variability features of ice conditions of the Laptev Sea in
1993(in Russian). In: L. Timokhov (ed.), Nauchnye Rezultaty ekspedicii LAPEKS-93. Gidrometeoizdat, St.Petersburg, 148-157.