Author/Authors :
Pavel P. Povineca، نويسنده , , U، نويسنده , , Dennis Woodheadb، نويسنده , , Paul Blowersb، نويسنده , , Rachel
Bonfieldb، نويسنده , , Malcolm Cooperc، نويسنده , , Quingjiang Chend، نويسنده , , Henning Dahlgaardd، نويسنده , ,
Constantin Dovletea، نويسنده , , Vanessa Foxi، نويسنده , , Klaus Froehliche، نويسنده , , Janine Gastauda، نويسنده , ,
Manfred Gr¨oninge، نويسنده , , Terry Hamiltonf، نويسنده , , Yoshihiro Ikeuchia، نويسنده , , G¨unther
Kanischg، نويسنده , , Alois Kr¨uger g، نويسنده , , Laval Liong Wee Kwonga، نويسنده , , Murray Matthewsh، نويسنده , ,
Uwe Morgensterni، نويسنده , , Sandor Mulsowa، نويسنده , , H°akan Petterssona، نويسنده , , Paul Smedleyb، نويسنده , ,
Ben Taylorb، نويسنده , , Claude Taylori، نويسنده , , Rick Tinkerh، نويسنده ,
Abstract :
The International Atomic Energy Agency IAEA. carried out an international project ‘The Study of the
Radiological Situation at the Atolls of Mururoa and Fangataufa’ with the aim of assessing the present and future
radiological situation at the atolls and making recommendations for either monitoring or remedial actions if they are
deemed necessary. The paper concentrates on marine radioactivity aspects and gives an estimation of present
radionuclide concentrations in water, sediment and biota of the Mururoa and Fangataufa lagoons and the
surrounding ocean. The dominant radionuclide in both lagoons is Pu in sediments the total inventory is approxi-
mately 30 TBq.. A decline in radionuclide concentrations has been observed in recent years in lagoon water, with the exception of 3H and 90Sr, for which a contribution from underground sources is to be expected. Radionuclide
concentrations in biota from the lagoons and the surrounding ocean are low and consistent with previous
measurements. The observed radionuclide concentrations in both lagoons imply that no radiological risk exists for
hypothetical inhabitants of Mururoa and Fangataufa Atolls.
