Rutgers van der Loeff, Michiel M; Stimac, Ingrid; Charkin, Alexander N; Bauch, Dorothea (2021): Radium isotopes and 228Th in surface water samples collected on POLARSTERN expedition PS78 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.935963
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Abstract:
228Ra is strongly enriched in shelf waters and its half-life (5.8 years) is well suited to study the fate of shelf-derived water in the central Arctic. During PS78 (TRANSARC I) we studied the distribution of 228Ra in surface waters of the central Arctic to investigate how this 228Ra signal is transported in the Transpolar Drift. Water from the ships' seawater intake (Sta 196, 205) or from a submersible pump lowered to 10m depth on hydrographic stations (from station 209 onwards) was filtered and passed over MnO2-coated cartridges to absorb Radium and Thorium. Short-lived 224Ra, as analog for the total concentration of its parent 228Th, was determined on board with RaDeCC counting. In the lab, the cartridges were leached and long-lived Radium isotopes were measured by gamma spectroscopy.
Related to:
Rutgers van der Loeff, Michiel M; Kipp, Lauren; Charette, Matthew A; Moore, Willard S; Black, Erin; Stimac, Ingrid; Charkin, Alexander N; Bauch, Dorothea; Valk, Ole; Karcher, Michael J; Krumpen, Thomas; Casacuberta Arola, Núria; Smethie, William M jr; Rember, Robert (2018): Radium isotopes across the Arctic Ocean show time scales of water mass ventilation and increasing shelf inputs. Journal of Geophysical Research: Oceans, 123(7), 4853-4873, https://doi.org/10.1029/2018JC013888
Coverage:
Median Latitude: 84.061488 * Median Longitude: 155.602439 * South-bound Latitude: 78.495000 * West-bound Longitude: 58.798000 * North-bound Latitude: 89.965000 * East-bound Longitude: -116.208000
Date/Time Start: 2011-08-13T00:00:00 * Date/Time End: 2011-09-23T00:00:00
Minimum DEPTH, water: 10 m * Maximum DEPTH, water: 10 m
Event(s):
PS78/196-3 * Latitude Start: 83.830330 * Longitude Start: 60.633330 * Latitude End: 83.830670 * Longitude End: 60.625670 * Date/Time Start: 2011-08-11T14:52:00 * Date/Time End: 2011-08-11T15:11:00 * Elevation Start: -3590.5 m * Elevation End: -3591.5 m * Location: Arctic Ocean * Campaign: ARK-XXVI/3 (PS78 TransArc) * Basis: Polarstern * Method/Device: Ships non-toxic pump (GPUMP)
PS78/205 * Latitude: 86.333000 * Longitude: 59.246000 * Date/Time: 2011-08-16T00:00:00 * Elevation: -1951.0 m * Campaign: ARK-XXVI/3 (PS78 TransArc) * Basis: Polarstern * Method/Device: Ships non-toxic pump (GPUMP)
PS78/209-5 * Latitude Start: 86.981500 * Longitude Start: 58.798330 * Latitude End: 86.982170 * Longitude End: 58.965330 * Date/Time Start: 2011-08-17T17:42:00 * Date/Time End: 2011-08-17T19:26:00 * Elevation Start: -4580.8 m * Elevation End: -4636.7 m * Location: Arctic Ocean * Campaign: ARK-XXVI/3 (PS78 TransArc) * Basis: Polarstern * Method/Device: Ships non-toxic pump (GPUMP)
Parameter(s):
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
460 data points