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

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Aug 24, 2023 291 likes •395 views

Monitoring of Radionuclides in the Baltic Sea in 2016 Vesa-Pekka Vartti, Meerit Kmrinen and Tarja Ikheimonen STUK Environmental Radiation Surveillance and Emergency preparedness STEILYTURVAKESKUS STRLSKERHETSCENTRALEN

SLIDE 1

SÄTEILYTURVAKESKUS • STRÅLSÄKERHETSCENTRALEN RADIATION AND NUCLEAR SAFETY AUTHORITY

Monitoring of Radionuclides in the Baltic Sea in 2016

Vesa-Pekka Vartti, Meerit Kämäräinen and Tarja Ikäheimonen STUK Environmental Radiation Surveillance and Emergency preparedness

SLIDE 2

SÄTEILYTURVAKESKUS • STRÅLSÄKERHETSCENTRALEN RADIATION AND NUCLEAR SAFETY AUTHORITY

Sampling stations & samples

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

Seawater samples: 7

stations

Sediment samples: 6

stations

Biota and fish samples: 6

stations

Bathymetric data, Seifert et al. 2001

SLIDE 3

SÄTEILYTURVAKESKUS • STRÅLSÄKERHETSCENTRALEN RADIATION AND NUCLEAR SAFETY AUTHORITY

Cs-137 in seawater (Bq/m3) in 2016

14/19 22/24 15/25 20/23 26/25 24/22 Surface/ Bottom 24/38 LOV 2: 16 LO R1: 14 OL2: 26

SLIDE 4

SÄTEILYTURVAKESKUS • STRÅLSÄKERHETSCENTRALEN RADIATION AND NUCLEAR SAFETY AUTHORITY

Cs-137 concentrations in surface water in different part of the Baltic Sea between 1980 - 2016

1 10 100 1000 1976 1980 1984 1988 1992 1996 2000 2004 2008 2012 2016 Cs-137 (Bq/m3) Baltic Proper (BY 15, except 1989:BY 2) Bothnian Bay (C VI) Bothnian Sea (EB 1) Gulf of Finland (LL 3a) Target level

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SÄTEILYTURVAKESKUS • STRÅLSÄKERHETSCENTRALEN RADIATION AND NUCLEAR SAFETY AUTHORITY

Sr-90 in seawater (Bq/m3) in 2016

5.2/5.5 7.5/8.3 7.4/6.9 Surface/Bottom 7.2/7.5 6.8/7.6 LO2: 5.8 LO R1: 5.3

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SÄTEILYTURVAKESKUS • STRÅLSÄKERHETSCENTRALEN RADIATION AND NUCLEAR SAFETY AUTHORITY

3H in seawater (Bq/l) in 2016

Surface/Bottom

1.1/<0.9 <1.0/1.0 1.1/1.2 1.1/1.2 1.1/<1.2 1.1/<0.9 1.1/<0.9 Lo2: 4.0 LoR1: 1.4 OL2: 1.7

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SÄTEILYTURVAKESKUS • STRÅLSÄKERHETSCENTRALEN RADIATION AND NUCLEAR SAFETY AUTHORITY

137Cs (Bq/kg) in sediment as a function of depth in 2016

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SÄTEILYTURVAKESKUS • STRÅLSÄKERHETSCENTRALEN RADIATION AND NUCLEAR SAFETY AUTHORITY

137Cs in the Baltic Sea sediments (kBq/m2)

4.5 31 33 0.7 1.9

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SÄTEILYTURVAKESKUS • STRÅLSÄKERHETSCENTRALEN RADIATION AND NUCLEAR SAFETY AUTHORITY

Cs-137 in fish (Bq/kg f.w.) in 2016

Herring/ Pike 0.36/9.2 4.4/13 3.6/7.1 2.8

Sr-90 in herring: 0.023-0.037 Bq/kg Sr-90 in pike: 0.008-0.013 Bq/kg

1 10 100 1000 Bq/kg

Pike

HAILUO LOVII SEILI TVÄRMINNE VAASA OLKILUOTO 0.1 1 10 100 1000 Bq/kg

Herring

HAILUOTO LOVIISA SEILI TVÄRMINNE VAASA OLKILUOTO

2.5/7.6 3.9/8.4

SLIDE 10

SÄTEILYTURVAKESKUS • STRÅLSÄKERHETSCENTRALEN RADIATION AND NUCLEAR SAFETY AUTHORITY

Concentrations in alga and bottom animals (Bq/kg d.w. ) in 2016

Saduria entomon Cs-137 : 8.0 Sr-90 : 8.4 Ag-110m: 0.9 Fucus vesiculosus Cs-137 : 18-27 Co-60 : 0.13-0.30 Mytilus Edulis Cs-137 : 1.0 Sr-90 : 7.0 Co-60 : 0.2

1 10 100 1000 Cs-137 Bq/kg Saduria entomon Fucus vesiculosus, Loviisa Fucus vesiculosus, Olkiluoto