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Kotilainen, Aarno T; Kotilainen, Mia M; Vartti, Vesa-Pekka; Hutri, Kaisa-Leena; Virtasalo, Joonas J (2021): 137Caesium activity content data of seabed surface sediments from the Gulf of Bothnia, northern Baltic Sea. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.938162 (DOI registration in progress)

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Abstract:
This dataset includes contents of 137Caesium in surface sediments determined for 1-cm sediment slices of 54 short gravity-cores from the Gulf of Bothnia, northern Baltic Sea. The 137Cs activity of untreated samples was measured by gamma spectrometry using an EG&E Ortec ACE™-2K spectrometer with a four-inch NaI/TI detector at the Geological Survey of Finland (GTK), Espoo. Since 2017, the 137Cs activity of sediment samples has been measured for 60 min using a BrightSpec bMCA-USB pulse height analyser coupled to a well-type NaI(Tl) detector at the Geological Survey of Finland. The 137Cs activity contents are presented per wet weight (Bq kg-1). Samples collected and measured over different years from 2001 to 2019 gave 137Cs values representing discrete time frames during the 18-year sampling/measuring interval, and are not fully, directly comparable. Thus, dataset lists also 137Cs activity content values decay corrected to 2021.
Keyword(s):
137Cs; Chernobyl; sediment; surface sediment; the Baltic Sea; the Gulf of Bothnia
Related to:
Kotilainen, Aarno T; Kotilainen, Mia M; Vartti, Vesa-Pekka; Hutri, Kaisa-Leena; Virtasalo, Joonas J (2021): Chernobyl still with us: 137Caesium activity contents in seabed sediments from the Gulf of Bothnia, northern Baltic Sea. Marine Pollution Bulletin, 172, 112924, https://doi.org/10.1016/j.marpolbul.2021.112924
Virtasalo, Joonas J; Österholm, Peter; Kotilainen, Aarno T; Åström, Mats E (2020): Enrichment of trace metals from acid sulfate soils in sediments of the Kvarken Archipelago, eastern Gulf of Bothnia, Baltic Sea. Biogeosciences, 17(23), 6097-6113, https://doi.org/10.5194/bg-17-6097-2020
Project(s):
Coverage:
Median Latitude: 64.194211 * Median Longitude: 22.644561 * South-bound Latitude: 61.068500 * West-bound Longitude: 19.730200 * North-bound Latitude: 65.744600 * East-bound Longitude: 24.458200
Date/Time Start: 2001-09-28T00:00:00 * Date/Time End: 2019-08-09T00:00:00
Minimum DEPTH, sediment/rock: 0.005 m * Maximum DEPTH, sediment/rock: 0.005 m
Event(s):
44-Ge-02 * Latitude: 64.035800 * Longitude: 22.871200 * Date/Time: 2002-07-23T00:00:00 * Elevation: -41.5 m * Location: Gulf of Bothnia * Method/Device: Gravity corer (GC) * Comment: Sampled with RVKaita
45-Ge-02 * Latitude: 63.873100 * Longitude: 23.008800 * Date/Time: 2002-07-24T00:00:00 * Elevation: -12.7 m * Location: Gulf of Bothnia * Method/Device: Gravity corer (GC) * Comment: Sampled with RVKaita
50-Ge-02 * Latitude: 63.240100 * Longitude: 22.040700 * Date/Time: 2002-07-27T00:00:00 * Elevation: -5.0 m * Location: Gulf of Bothnia * Method/Device: Gravity corer (GC) * Comment: Sampled with RVKaita
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1Event labelEventKotilainen, Aarno T
2IdentificationIDKotilainen, Aarno T
3Sample IDSample IDKotilainen, Aarno T
4DEPTH, sediment/rockDepthmKotilainen, Aarno TGeocode
5LATITUDELatitudeKotilainen, Aarno TGeocode
6LONGITUDELongitudeKotilainen, Aarno TGeocode
7Depth, bathymetricBathy depthmKotilainen, Aarno T
8DATE/TIMEDate/TimeKotilainen, Aarno TGeocode
9VesselVesselKotilainen, Aarno TRV
10Caesium-137137CsBq/kgKotilainen, Aarno TGamma spectrometry, NaI(Tl) detectorSurface
11Caesium-137, decay corrected137Cs dec corrBq/kgKotilainen, Aarno TDecay correctionSurface: decay corrected to 2021
12Reference/sourceReferenceKotilainen, Aarno T
Status:
Curation Level: Enhanced curation (CurationLevelC) * Processing Level: PANGAEA data processing level 3 (ProcLevel3)
Size:
378 data points

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