Monitoring of Radionuclides in the Baltic Sea in 2016 Vesa-Pekka - PowerPoint PPT Presentation

Monitoring of Radionuclides in the Baltic Sea in 2016 Vesa-Pekka Vartti, Meerit Kämäräinen and Tarja Ikäheimonen STUK Environmental Radiation Surveillance and Emergency preparedness SÄTEILYTURVAKESKUS • STRÅLSÄKERHETSCENTRALEN RADIATION AND NUCLEAR SAFETY AUTHORITY

Sampling stations & samples • Seawater samples: 7 stations • Sediment samples: 6 stations • Biota and fish samples: 6 stations Sea Water : LL17, EB 1, CVI, LL3a, BY15, US5b, JML, OL2, LO 02, LO R1 Sediment : LL17, EB 1, CVI, LL3a, BY15, JML Biota and Fish: Seili, Tvärminne, Vaasa, Hailuto, Loviisa, Olkiluoto Bathymetric data, Seifert et al. 2001 SÄTEILYTURVAKESKUS • STRÅLSÄKERHETSCENTRALEN RADIATION AND NUCLEAR SAFETY AUTHORITY

Cs-137 in seawater (Bq/m 3 ) in 2016 Surface/ 14/19 Bottom 24/38 22/24 LOV 2: 16 LO R1: 14 15/25 20/23 OL2: 26 26/25 24/22 SÄTEILYTURVAKESKUS • STRÅLSÄKERHETSCENTRALEN RADIATION AND NUCLEAR SAFETY AUTHORITY

Cs-137 concentrations in surface water in different part of the Baltic Sea between 1980 - 2016 Baltic Proper (BY 15, except 1989:BY 2) 1000 Bothnian Bay (C VI) Bothnian Sea (EB 1) Gulf of Finland (LL 3a) 100 Target level Cs-137 (Bq/m 3 ) 10 1 1976 1980 1984 1988 1992 1996 2000 2004 2008 2012 2016 SÄTEILYTURVAKESKUS • STRÅLSÄKERHETSCENTRALEN RADIATION AND NUCLEAR SAFETY AUTHORITY

Sr-90 in seawater (Bq/m 3 ) in 2016 Surface/Bottom 5.2/5.5 LO2: 5.8 7.2/7.5 LO R1: 5.3 6.8/7.6 7.5/8.3 7.4/6.9 SÄTEILYTURVAKESKUS • STRÅLSÄKERHETSCENTRALEN RADIATION AND NUCLEAR SAFETY AUTHORITY

3 H in seawater (Bq/l) in 2016 Surface/Bottom <1.0/1.0 Lo2: 4.0 1.1/1.2 LoR1: 1.4 1.1/<0.9 OL2: 1.7 1.1/1.2 1.1/<0.9 1.1/<1.2 1.1/<0.9 SÄTEILYTURVAKESKUS • STRÅLSÄKERHETSCENTRALEN RADIATION AND NUCLEAR SAFETY AUTHORITY

137 Cs (Bq/kg) in sediment as a function of depth in 2016 SÄTEILYTURVAKESKUS • STRÅLSÄKERHETSCENTRALEN RADIATION AND NUCLEAR SAFETY AUTHORITY

137 Cs in the Baltic Sea sediments (kBq/m 2 ) 4.5 31 33 1.9 0.7 SÄTEILYTURVAKESKUS • STRÅLSÄKERHETSCENTRALEN RADIATION AND NUCLEAR SAFETY AUTHORITY

Cs-137 in fish (Bq/kg f.w.) in 2016 Herring 1000 HAILUOTO LOVIISA SEILI Herring/ 100 TVÄRMINNE 0.36/9.2 VAASA Pike OLKILUOTO Bq/kg 10 4.4/13 1 3.9/8.4 2.5/7.6 3.6/7.1 0.1 HAILUO Pike 2.8 LOVII 1000 SEILI TVÄRMINNE VAASA OLKILUOTO 100 Bq/kg 10 Sr-90 in herring: 0.023-0.037 Bq/kg 1 Sr-90 in pike: 0.008-0.013 Bq/kg SÄTEILYTURVAKESKUS • STRÅLSÄKERHETSCENTRALEN RADIATION AND NUCLEAR SAFETY AUTHORITY

Concentrations in alga and bottom animals (Bq/kg d.w. ) in 2016 Fucus vesiculosus 1000 Cs-137 : 18-27 Co-60 : 0.13-0.30 100 Cs-137 Bq/kg Saduria entomon 10 Cs-137 : 8.0 Mytilus Edulis Saduria entomon Sr-90 : 8.4 Cs-137 : 1.0 Fucus vesiculosus, Loviisa Ag-110m: 0.9 Fucus vesiculosus, Olkiluoto Sr-90 : 7.0 Co-60 : 0.2 1 SÄTEILYTURVAKESKUS • STRÅLSÄKERHETSCENTRALEN RADIATION AND NUCLEAR SAFETY AUTHORITY