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Rutgers van der Loeff, Michiel M; Stimac, Ingrid; Bauch, Dorothea; Valk, Ole; Geibert, Walter; Vieira, Lucia Helena (2021): Radium isotopes and 228Th in water column samples collected on POLARSTERN expedition PS94 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.936050

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Abstract:
Radium isotopes are produced by decay of an isotope of thorium, a highly particle reactive element. Radium is relatively soluble in seawater such that once a thorium isotope in suspended or bottom sediments decays, a fraction of the produced radium isotope may be released to solution. 224Ra (3.7-day half-life) and 223Ra (11.4-day half-life) are used extensively as tracers for interaction on the shelf and for submarine groundwater discharge (SGD). 228Ra is strongly enriched in shelf waters and in the Transpolar Drift (TPD) and its half-life (5.8 years) is well suited to study the fate of this shelf-derived water in the central Arctic. This dataset collected in the framework of GEOTRACES during PS94 in 2015 shows that the input of 228Ra in the TPD has increased since previous studies in 2007 and 2011. The distribution of 228Ra-daughter 228Th (1.9 y half-life) and the 228Th/228Ra ratio are measured to trace particle fluxes. The accumulation of 226Ra (1620 y half-life) in the deep Makarov Basin can be used as a measure of basin ventilation time.
Keyword(s):
GEOTRACES; In-Situ-Pump; Radium; Thorium
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: 83.019641 * Median Longitude: 102.570967 * South-bound Latitude: 71.000000 * West-bound Longitude: 21.200000 * North-bound Latitude: 89.930000 * East-bound Longitude: -116.830000
Date/Time Start: 2015-08-20T00:00:00 * Date/Time End: 2015-10-09T00:00:00
Minimum DEPTH, water: 10 m * Maximum DEPTH, water: 4180 m
Event(s):
PS94/004-4  * Latitude: 79.249500 * Longitude: 30.036170 * Date/Time: 2015-08-20T03:52:00 * Elevation: -227.2 m * Location: Barents Sea * Campaign: PS94 (ARK-XXIX/3) * Basis: Polarstern * Method/Device: In situ pump (ISP)
PS94/032-8  * Latitude Start: 81.847170 * Longitude Start: 30.851500 * Latitude End: 81.856330 * Longitude End: 30.917170 * Date/Time Start: 2015-08-22T22:06:00 * Date/Time End: 2015-08-23T03:01:00 * Elevation Start: -3168.5 m * Elevation End: -3162.2 m * Location: Arctic Ocean * Campaign: PS94 (ARK-XXIX/3) * Basis: Polarstern * Method/Device: In situ pump (ISP)
PS94/050-5  * Latitude: 84.383670 * Longitude: 30.230000 * Date/Time: 2015-08-26T17:23:00 * Elevation: -4055.7 m * Location: Arctic Ocean * Campaign: PS94 (ARK-XXIX/3) * Basis: Polarstern * Method/Device: In situ pump (ISP)
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
Event labelEventRutgers van der Loeff, Michiel M
Station labelStationRutgers van der Loeff, Michiel M
DATE/TIMEDate/TimeRutgers van der Loeff, Michiel MGeocode
LATITUDELatitudeRutgers van der Loeff, Michiel MGeocode
LONGITUDELongitudeRutgers van der Loeff, Michiel MGeocode
Depth, bathymetricBathy depthmRutgers van der Loeff, Michiel M
DEPTH, waterDepth watermRutgers van der Loeff, Michiel MGeocode
Thorium-228228Thdpm/m3Rutgers van der Loeff, Michiel Mdissolved
Thorium-228, standard deviation228Th std dev±Rutgers van der Loeff, Michiel M1 sigma
10 Radium-224 excess224Ra xsdpm/m3Rutgers van der Loeff, Michiel Mdissolved
11 Radium-224 excess, standard deviation224Ra xs std dev±Rutgers van der Loeff, Michiel M1 sigma
12 Radium-224224Radpm/m3Rutgers van der Loeff, Michiel MRaDeCCdissolved
13 Radium-224, standard deviation224Ra std dev±Rutgers van der Loeff, Michiel MRaDeCC1 sigma
14 Radium-226226Radpm/m3Rutgers van der Loeff, Michiel MGamma spectroscopy
15 Radium-226, standard deviation226Ra std dev±Rutgers van der Loeff, Michiel MGamma spectroscopy1 sigma
16 Radium-228228Radpm/m3Rutgers van der Loeff, Michiel MGamma spectroscopy
17 Radium-228, standard deviation228Ra std dev±Rutgers van der Loeff, Michiel MGamma spectroscopy1 sigma
18 Radium-224/Radium-228 ratio224Ra/228RaRutgers van der Loeff, Michiel M
19 Radium-224/Radium-228 ratio, error224Ra/228Ra e±Rutgers van der Loeff, Michiel M1 sigma
20 Depth, relativeDepth relmRutgers van der Loeff, Michiel MRosette Depth
21 SalinitySalRutgers van der Loeff, Michiel M
22 Temperature, water, potentialTpot°CRutgers van der Loeff, Michiel M
23 δ18O, waterδ18O H2O‰ SMOWRutgers van der Loeff, Michiel M
24 FractionFrac%Rutgers van der Loeff, Michiel Mof meteoric water
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
1501 data points

Data

Download dataset as tab-delimited text — use the following character encoding:


Event

Station

Date/Time

Latitude

Longitude

Bathy depth [m]

Depth water [m]

228Th [dpm/m3]

228Th std dev [±]
10 
224Ra xs [dpm/m3]
11 
224Ra xs std dev [±]
12 
224Ra [dpm/m3]
13 
224Ra std dev [±]
14 
226Ra [dpm/m3]
15 
226Ra std dev [±]
16 
228Ra [dpm/m3]
17 
228Ra std dev [±]
18 
224Ra/228Ra
19 
224Ra/228Ra e [±]
20 
Depth rel [m]
21 
Sal
22 
Tpot [°C]
23 
δ18O H2O [‰ SMOW]
24 
Frac [%]
PS94/004-4 42015-08-2079.25130.046200.0255.21.30.11.65.32.049.14.734.44.10.20.1
PS94/004-442015-08-2079.25130.046200.0756.11.11.01.57.11.885.47.652.25.60.10.0
PS94/004-442015-08-2079.25130.046200.0125103.35.465.04.8
PS94/004-442015-08-2079.25130.046200.01754.32.66.64.810.95.557.84.932.93.50.30.1
PS94/032-8 322015-08-2381.86030.8221600.03006.40.42.60.69.00.782.35.420.82.30.40.130035.012.580.250.6
PS94/032-8322015-08-2381.86030.8221600.05007.60.71.41.89.02.050034.971.720.260.5
PS94/032-8322015-08-2381.86030.8221600.015001.40.40.80.52.20.685.56.64.40.60.50.1
PS94/050-5 502015-08-2684.39930.8024055.0106.40.61.91.38.31.549.24.712.31.80.70.133.31-1.55-0.111.7
PS94/050-5502015-08-2684.39930.8024055.05012.71.13.93.216.53.471.46.820.02.20.80.26034.46-1.79-0.061.7
PS94/050-5502015-08-2684.39930.8024055.03008.60.61.30.89.91.082.34.612.81.50.80.130034.931.890.250.5
PS94/050-5502015-08-2684.39930.8024055.05006.30.42.40.78.70.883.24.27.61.01.20.250034.931.230.220.6
PS94/050-5502015-08-2684.39930.8024055.020001.20.71.51.32.71.4124.016.82.50.91.10.5200034.92-0.850.220.5
PS94/050-5502015-08-2684.39930.8024055.030000.60.10.30.20.90.292.813.12.00.60.40.1300034.93-0.930.270.2
PS94/050-5502015-08-2684.39930.8024055.035002.30.24.10.86.40.997.69.24.60.71.40.2349934.94-0.930.230.3
PS94/054 542015-08-2885.08742.5884017.0105.00.51.70.86.71.046.44.513.11.80.50.132.95-1.76-0.031.3
PS94/058 582015-08-2985.27760.0403927.0109.60.91.51.411.11.766.96.423.22.70.50.133.26-1.77-0.041.0
PS94/062 622015-08-3186.14259.9073914.0108.20.73.31.311.41.548.14.618.22.00.60.133.38-1.69-0.372.7
PS94/068 682015-09-0287.00358.6104805.01012.71.17.03.119.73.351.55.031.93.50.60.1
PS94/075 752015-09-0488.03159.9784448.01014.91.38.82.523.72.854.45.242.94.70.60.1
PS94/081-9 812015-09-0588.98761.0634401.01019.41.716.23.635.64.071.06.9129.213.60.30.030.28-1.46-3.3815.6
PS94/081-9812015-09-0688.98760.9884401.010017.61.53.93.921.54.265.16.238.34.10.60.110034.07-1.55-0.594.1
PS94/081-9812015-09-0688.98760.9884401.0100015.31.34.12.919.33.280.97.717.61.91.10.2100034.91-0.150.230.4
PS94/081-9812015-09-0688.98760.9884401.020001.90.21.20.53.10.584.68.13.10.51.00.2200034.92-0.770.210.6
PS94/081-9812015-09-0688.98760.9884401.030002.70.40.90.73.60.893.26.04.80.90.70.2300034.94-0.920.220.4
PS94/081-9812015-09-0688.98760.9884401.035002.40.51.00.73.40.986.96.14.70.80.70.2350034.94-0.930.240.3
PS94/081-9812015-09-0688.98760.9884401.040005.70.41.80.67.50.8113.86.68.21.00.90.1400034.95-0.930.260.2
PS94/087 872015-09-0889.930-120.1954264.01019.51.724.34.143.84.585.98.3191.119.70.20.029.29-4.4220.1
PS94/091 912015-09-0989.167-116.8301348.01023.42.028.74.952.15.391.38.8198.020.70.30.0
PS94/096-5 962015-09-1188.360-125.0943615.01021.50.748.72.370.22.494.39.1194.120.20.40.028.27-1.51-4.4819.6
PS94/096-5962015-09-1188.363-125.1553615.010029.20.710.01.539.21.684.04.448.03.30.80.110033.92-1.43-0.593.3
PS94/096-5962015-09-1188.363-125.1553615.030011.50.53.00.914.51.086.24.611.31.31.30.230034.810.800.130.9
PS94/096-5962015-09-1188.363-125.1553615.05007.80.42.70.510.50.680.44.38.10.91.30.250034.870.630.180.7
PS94/096-5962015-09-1188.363-125.1553615.020000.60.10.50.21.00.299.29.41.70.40.60.2250034.96-0.520.130.8
PS94/096-5962015-09-1188.363-125.1553615.030002.20.21.70.53.90.6130.512.43.90.71.00.2349534.96-0.530.210.3
PS94/096-5962015-09-1188.363-125.1553615.035203.40.31.70.75.10.8158.615.14.20.71.20.2349534.96-0.530.210.3
PS94/099 992015-09-1288.363-125.1553600.01052.21.518.62.470.92.991.64.8216.514.20.30.01027.99-1.51-4.7020.8
PS94/101-6 1012015-09-1387.495179.9203996.01031.51.020.11.751.62.091.14.8148.710.00.30.01128.03-1.52-3.7114.3
PS94/101-61012015-09-1487.500179.8163996.09929.80.812.61.342.41.582.44.354.83.80.80.19933.94-1.46-0.483.0
PS94/101-61012015-09-1487.500179.8163996.025911.50.50.80.912.21.087.74.610.71.01.10.124934.810.780.150.8
PS94/101-61012015-09-1487.500179.8163996.04995.80.41.60.67.30.779.64.55.20.51.40.249934.870.550.200.6
PS94/101-61012015-09-1487.500179.8163996.09994.40.41.30.85.70.987.08.35.50.91.00.23534.89-0.22
PS94/101-61012015-09-1487.500179.8163996.013991.10.50.40.61.50.880.66.41.20.41.30.73534.92-0.41
PS94/101-61012015-09-1487.500179.8163996.018990.40.10.60.21.00.294.19.01.10.30.90.23534.95-0.50
PS94/101-61012015-09-1487.500179.8163996.033992.50.31.90.64.30.7136.813.04.80.70.90.23534.96-0.53
PS94/101-61012015-09-1487.500179.8163996.038003.40.30.40.63.80.7141.513.54.70.60.80.23534.96-0.53
PS94/117-7 1172015-09-1884.471115.6874158.01012.60.77.40.919.91.148.42.670.35.00.30.01032.13-1.73-1.8910.0
PS94/117-71172015-09-1984.471115.6874158.030010.90.53.41.014.31.184.24.312.11.21.20.130034.871.190.210.6
PS94/117-71172015-09-1984.471115.6874158.05008.30.32.50.610.90.771.63.78.70.71.30.150134.890.570.220.4
PS94/117-71172015-09-1984.471115.6874158.0100014.51.46.23.320.73.687.28.219.62.11.10.2
PS94/117-71172015-09-1984.471115.6874158.015004.90.41.70.56.60.781.74.44.10.61.60.3
PS94/117-71172015-09-1984.471115.6874158.020001.30.21.10.42.40.490.18.62.00.41.20.3
PS94/117-71172015-09-1984.471115.6874158.035002.70.30.90.53.70.697.89.34.90.70.70.2
PS94/117-71172015-09-1984.471115.6874158.041803.80.42.00.75.80.895.59.17.30.90.80.1
PS94/119 1192015-09-2084.813123.8934285.01020.00.814.01.933.92.182.24.496.16.80.40.0731.160.00-2.6613.5
PS94/121 1212015-09-2185.014132.9314318.01027.61.024.02.251.62.5107.25.6179.412.00.30.01129.13-1.58-3.7617.4
PS94/123 1232015-09-2185.064137.6354089.01032.20.713.11.845.41.9103.15.2166.910.70.30.01029.90-1.62-3.3315.8
PS94/125-8 1252015-09-2285.086139.9793906.01014.80.923.61.838.32.090.94.9147.010.40.30.02030.23-1.59-2.8913.7
PS94/125-81252015-09-2285.086139.9793906.010021.30.54.21.025.51.274.23.844.62.90.60.010034.28-1.31-0.212.1
PS94/125-81252015-09-2285.086139.9793906.030013.30.32.51.015.81.180.14.019.51.70.80.130034.860.960.190.7
PS94/125-81252015-09-2285.086139.9793906.050012.81.12.61.915.32.279.47.519.72.20.80.150034.890.530.200.6
PS94/125-81252015-09-2285.086139.9793906.015006.10.32.90.69.00.779.64.214.11.10.60.1
PS94/125-81252015-09-2285.086139.9793906.020003.50.31.60.65.10.784.18.06.40.90.80.1
PS94/125-81252015-09-2285.086139.9793906.025002.10.20.90.63.10.784.08.05.71.00.50.1
PS94/125-81252015-09-2285.086139.9793906.035004.40.40.80.75.20.894.49.06.20.90.80.2
PS94/125-81252015-09-2285.086139.9793906.037654.30.1-0.10.34.20.498.35.48.10.70.50.1
PS94/129 1292015-09-2385.023149.2231734.01030.30.79.51.839.91.9118.720.1203.035.70.20.0
PS94/132 1322015-09-2485.023155.2192509.01023.50.928.02.251.52.490.54.4165.310.40.30.01027.19-1.48-4.1316.7
PS94/134 1342015-09-2484.842159.0313170.01040.30.86.62.046.92.299.35.2153.210.50.30.0727.21-1.46-1.834.1
PS94/135 1352015-09-2583.978155.9472779.01017.30.99.81.827.12.068.23.5121.08.00.20.0
PS94/136 1362015-09-2582.968153.9102785.01018.90.810.01.728.91.9106.65.8198.913.80.10.0
PS94/137 1372015-09-2582.238149.4782800.01016.90.712.01.628.91.8106.65.7201.013.40.10.0
PS94/138 1382015-09-2680.806142.3782790.01014.70.58.21.222.91.291.34.8135.79.20.20.0
PS94/139 1392015-09-2680.179134.2902796.01012.10.51.11.213.21.369.23.859.84.30.20.0
PS94/140 1402015-09-2679.596127.2192665.0108.70.38.51.017.21.071.63.754.94.00.30.0
PS94/147 1472015-10-0675.00824.249148.0102.70.57.60.810.31.070.53.529.12.20.40.0
PS94/153-6 1532015-10-0773.70723.359460.2106.60.60.11.06.71.273.67.128.83.00.20.0
PS94/153-61532015-10-0773.70723.359460.2105.70.65.70.911.41.180.84.329.82.40.40.0
PS94/153-61532015-10-0773.70723.359460.21007.40.31.50.78.90.779.54.425.22.00.40.0
PS94/153-61532015-10-0773.70723.359460.21509.20.50.61.09.81.1105.06.225.42.30.40.1
PS94/153-61532015-10-0773.70723.359460.220010.70.91.41.412.11.777.17.421.62.30.60.1
PS94/153-61532015-10-0773.70723.359460.230010.50.90.41.510.81.878.27.526.12.90.40.1
PS94/153-61532015-10-0773.70723.359460.23854.60.34.40.79.00.782.54.749.23.90.20.0
PS94/161-5 1612015-10-0872.73522.822394.7108.10.7-0.61.67.41.770.66.744.24.70.20.0
PS94/161-51612015-10-0872.73522.822394.7102.30.35.90.78.30.744.02.529.72.40.30.0
PS94/161-51612015-10-0872.73522.822394.71007.20.20.80.68.10.679.04.322.91.70.40.0
PS94/161-51612015-10-0872.73522.822394.71506.60.42.41.09.01.186.55.024.22.10.40.0
PS94/161-51612015-10-0872.73522.822394.72007.00.21.30.68.30.681.94.524.82.00.30.0
PS94/161-51612015-10-0872.73522.822394.73009.50.81.21.810.72.077.57.424.52.80.40.1
PS94/161-51612015-10-0872.73522.822394.73255.80.42.91.08.71.178.14.726.52.30.30.0
PS94/161-51612015-10-0872.73522.822394.73456.80.68.91.915.82.083.48.026.03.10.60.1
PS94/169 1692015-10-0871.56521.908354.7103.70.54.20.87.91.046.92.738.52.70.20.0
PS94/173 1732015-10-0971.00021.200175.7109.70.75.21.114.91.359.13.377.26.10.20.0