Ricardo de Freitas, Thaise; Hess, Silvia; Renaud, Paul E; Appleby, Peter G; Alve, Elisabeth (2025): Radiometric activities of sediment cores from the northern Barents Sea [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.986962, In: Ricardo de Freitas, T et al. (2025): Sedimentary and geochemical properties of sediment cores from the northern Barents Sea [dataset bundled publication]. PANGAEA, https://doi.org/10.1594/PANGAEA.986961
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Published: 2025-11-11 • DOI registered: 2025-12-10
Abstract:
Sediment cores (40 cm long, 10 cm diameter) were retrieved at nine stations (NPAL04 to NPAL19) with a four-tube multi-corer. Additionally, one short sediment core (6 cm length x 5 cm diameter) was subsampled from a giant box corer deployment at station P1. All sediment cores were immediately sliced into 1 cm layers, and subsamples were directly frozen on board ( 20 °C). Radiometric activities (210Pb, 226Ra, and 137Cs) were analysed by direct gamma assay in the Environmental Radioactivity Laboratory at the University of Liverpool. Supported 210Pb activity (210Pbsup) was assumed equal to the measured 226Ra activity in the sediments. Excess 210Pb activity (210Pbxs) was calculated by subtracting 210Pbsup from the measured total 210Pb activity (210Pbtotal).
Related to:
Ricardo de Freitas, Thaise; Hess, Silvia; Renaud, Paul E; Appleby, Peter G; Alve, Elisabeth (2024): Drivers of organic carbon distribution and accumulation in the northern Barents Sea. Progress in Oceanography, 225, 103286, https://doi.org/10.1016/j.pocean.2024.103286
Funding:
Coverage:
Median Latitude: 79.791510 * Median Longitude: 31.251886 * South-bound Latitude: 76.000000 * West-bound Longitude: 27.519100 * North-bound Latitude: 83.270400 * East-bound Longitude: 33.985700
Date/Time Start: 2018-09-28T19:07:00 * Date/Time End: 2021-03-06T02:53:02
Minimum DEPTH, sediment/rock: 0.005 m * Maximum DEPTH, sediment/rock: 0.185 m
Event(s):
AeN_Q1_P1_BC1 * Latitude: 76.000000 * Longitude: 31.219700 * Date/Time: 2021-03-06T02:53:02 * Elevation: -325.0 m * Campaign: Seasonal_Cruise_Q1 (2021703) * Basis: Kronprins Haakon * Method/Device: Box corer (BC)
NPAL04 (KH18-10-04-MC3-C) * Latitude: 77.910900 * Longitude: 31.296200 * Date/Time: 2018-09-28T19:07:00 * Elevation: -232.2 m * Location: Barents Sea * Campaign: Paleo_Cruise_2018 (2018710) * Basis: Kronprins Haakon * Method/Device: MultiCorer (MUC)
NPAL05 (KH18-10-05-MC2-B) * Latitude: 78.768000 * Longitude: 33.985700 * Date/Time: 2018-09-29T16:27:00 * Elevation: -301.3 m * Location: Barents Sea * Campaign: Paleo_Cruise_2018 (2018710) * Basis: Kronprins Haakon * Method/Device: MultiCorer (MUC)
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Ricardo de Freitas, Thaise | |||
| 2 | LATITUDE | Latitude | Ricardo de Freitas, Thaise | Geocode | ||
| 3 | LONGITUDE | Longitude | Ricardo de Freitas, Thaise | Geocode | ||
| 4 | DEPTH, sediment/rock | Depth sed | m | Ricardo de Freitas, Thaise | Geocode | |
| 5 | Water content, wet mass | Water wm | % | Ricardo de Freitas, Thaise | ||
| 6 | Lead-210 | 210Pb | Bq/kg | Ricardo de Freitas, Thaise | Gamma spectrometer (GSPEC) | Lead-210, total |
| 7 | Lead-210, standard deviation | 210Pb std dev | ± | Ricardo de Freitas, Thaise | Gamma spectrometer (GSPEC) | excess activity, 210Pb activity above background value |
| 8 | Radium-226 | 226Ra | Bq/kg | Ricardo de Freitas, Thaise | Gamma spectrometer (GSPEC) | 210Pb sup assumed equal to the measured 226Ra activity in the sediments |
| 9 | Radium-226, standard deviation | 226Ra std dev | ± | Ricardo de Freitas, Thaise | Gamma spectrometer (GSPEC) | |
| 10 | Lead-210 excess | 210Pb xs | Bq/kg | Ricardo de Freitas, Thaise | Gamma spectrometer (GSPEC) | |
| 11 | Lead-210 excess, standard deviation | 210Pb xs std dev | ± | Ricardo de Freitas, Thaise | Gamma spectrometer (GSPEC) | |
| 12 | Caesium-137 | 137Cs | Bq/kg | Ricardo de Freitas, Thaise | Gamma spectrometer (GSPEC) | |
| 13 | Caesium-137, standard deviation | 137Cs std dev | ± | Ricardo de Freitas, Thaise | Gamma spectrometer (GSPEC) |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Basic curation (CurationLevelB) * Processing Level: PANGAEA data processing level 2 (ProcLevel2)
Size:
1035 data points