de Stigter, Henko (2019): Radionuclide 210Pb and 226Ra data measured on sediment cores during SONNE cruise SO242/1 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.905443
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Abstract:
Sediment profiles of 210Pb and 226Ra, radio-isotopes from the 234U decay series with half-lives of respectively 22.3 and 1600 year, were measured in multicores collected from the DISCOL Experimental Area in the Peru Basin during SO242-1, for determining biological mixing rates integrated over a ~100 year time-scale. Total 210Pb and 226Ra activity were determined directly by gamma-spectrometry, whilst total 210Pb was also measured indirectly by alpha-spectrometry via its granddaughter isotope 210Po. Activities of anthropogenic 137Cs proved to be generally below detection level. Radionuclide activities are reported in the data base as mBq g-1 dry sediment.
For gamma-spectrometry measurement of 210Pb and 226Ra, 2-5 ml of freeze-dried and homogenized sediment was weighed and packed in a 6-cm diameter plastic Petri dish which then was sealed with electrical tape and packed in a sealed plastic envelope. Calibration and monitor standards and samples were prepared in the same geometry. Sealed sediment samples were left for a minimum of four weeks to establish radioactive equilibrium between 222Rn and 226Ra. Gamma activity was measured with a Canberra Broad Energy Range High Purity Germanium Detector (BEGe), using the 46.5 keV line for 210Pb and 295.2, 351.9 and 609.3 keV lines for 226Ra. The detector, connected to a computer via a Digital Spectrum Analyser (DSA-1000), counted the radionuclide activities with Genie 2000 gamma spectroscopy software. Samples were counted for 2–5 days to obtain good counting statistics or relative standard deviation (RSD). A blank (empty petri dish) was counted during 23 days. The detector was externally calibrated with a Geological Certified Reference Material IAEA/RGU-1, with reference date of 01-01-1988. A monitor standard IAEA-300 provided quality control. Excess 210Pb activities were calculated by subtracting 226Ra activity averaged for the 295.2, 351.9 and 609.3 keV lines from the measured total 210Pb activity.
Related to:
Haffert, Laura; Haeckel, Matthias; de Stigter, Henko; Janssen, Felix (2020): Assessing the temporal scale of deep-sea mining impacts on sediment biogeochemistry. Biogeosciences, 17(10), 2767-2789, https://doi.org/10.5194/bg-17-2767-2020
Project(s):
JPI Oceans - Ecological Aspects of Deep-Sea Mining (JPIO-MiningImpact)
Coverage:
Median Latitude: -7.077206 * Median Longitude: -88.462444 * South-bound Latitude: -7.125400 * West-bound Longitude: -88.526350 * North-bound Latitude: -7.056217 * East-bound Longitude: -88.433767
Date/Time Start: 2015-08-02T21:27:28 * Date/Time End: 2015-08-22T04:21:40
Minimum DEPTH, sediment/rock: 0.005 m * Maximum DEPTH, sediment/rock: 0.310 m
Event(s):
SO242/1_34-1 (SO242/1_34-1_MUC 6) * Latitude: -7.125400 * Longitude: -88.450517 * Date/Time: 2015-08-02T21:27:28 * Elevation: -4161.7 m * Campaign: SO242/1 (JPI-OCEANS) * Basis: Sonne_2 * Method/Device: MultiCorer (MUC) * Comment: device position
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | de Stigter, Henko | |||
| 2 | Optional event label | Event 2 | de Stigter, Henko | |||
| 3 | Date/Time of event | Date/Time | de Stigter, Henko | |||
| 4 | Latitude of event | Latitude | de Stigter, Henko | |||
| 5 | Longitude of event | Longitude | de Stigter, Henko | |||
| 6 | Elevation of event | Elevation | m | de Stigter, Henko | ||
| 7 | Depth, top/min | Depth top | m | de Stigter, Henko | ||
| 8 | Depth, bottom/max | Depth bot | m | de Stigter, Henko | ||
| 9 | DEPTH, sediment/rock | Depth sed | m | de Stigter, Henko | Geocode | |
| 10 | Lead-210 | 210Pb | Bq/kg | de Stigter, Henko | 46.5 keV | |
| 11 | Lead-210, error | 210Pb e | ± | de Stigter, Henko | 1s | |
| 12 | Radium-226 | 226Ra | Bq/kg | de Stigter, Henko | 295.2 keV | |
| 13 | Radium-226, error | 226Ra e | ± | de Stigter, Henko | 1s | |
| 14 | Radium-226 | 226Ra | Bq/kg | de Stigter, Henko | 351.9 keV | |
| 15 | Radium-226, error | 226Ra e | ± | de Stigter, Henko | 1s | |
| 16 | Radium-226 | 226Ra | Bq/kg | de Stigter, Henko | 609.3keV | |
| 17 | Radium-226, error | 226Ra e | ± | de Stigter, Henko | 1s | |
| 18 | Radium-226 | 226Ra | Bq/kg | de Stigter, Henko | average |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Size:
451 data points
Data
| 1 Event | 2 Event 2 | 3 Date/Time | 4 Latitude | 5 Longitude | 6 Elevation [m] | 7 Depth top [m] | 8 Depth bot [m] | 9 Depth sed [m] | 10 210Pb [Bq/kg] (46.5 keV) | 11 210Pb e [±] (1s) | 12 226Ra [Bq/kg] (295.2 keV) | 13 226Ra e [±] (1s) | 14 226Ra [Bq/kg] (351.9 keV) | 15 226Ra e [±] (1s) | 16 226Ra [Bq/kg] (609.3keV) | 17 226Ra e [±] (1s) | 18 226Ra [Bq/kg] (average) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| SO242/1_34-1 | SO242/1_34-1_MUC 6 | 2015-08-02T21:27:28 | -7.1254 | -88.4505 | -4162 | 0.00 | 0.01 | 0.005 | 1788.1 | 24.0 | 379.4 | 7.7 | 408.9 | 6.2 | 422.2 | 15.3 | 403.5 |
| SO242/1_34-1 | SO242/1_34-1_MUC 6 | 2015-08-02T21:27:28 | -7.1254 | -88.4505 | -4162 | 0.01 | 0.02 | 0.015 | 1539.4 | 52.8 | 425.0 | 14.2 | 449.0 | 12.2 | 400.2 | 45.4 | 424.8 |
| SO242/1_34-1 | SO242/1_34-1_MUC 6 | 2015-08-02T21:27:28 | -7.1254 | -88.4505 | -4162 | 0.02 | 0.03 | 0.025 | 894.8 | 34.8 | 386.9 | 13.7 | 400.8 | 11.5 | 415.3 | 47.1 | 401.0 |
| SO242/1_34-1 | SO242/1_34-1_MUC 6 | 2015-08-02T21:27:28 | -7.1254 | -88.4505 | -4162 | 0.05 | 0.07 | 0.060 | 972.4 | 49.0 | 394.0 | 16.6 | 384.0 | 12.9 | 365.3 | 18.6 | 381.1 |
| SO242/1_34-1 | SO242/1_34-1_MUC 6 | 2015-08-02T21:27:28 | -7.1254 | -88.4505 | -4162 | 0.14 | 0.16 | 0.150 | 1022.9 | 43.7 | 427.3 | 11.8 | 423.5 | 9.7 | 413.1 | 15.6 | 421.3 |
| SO242/1_34-1 | SO242/1_34-1_MUC 6 | 2015-08-02T21:27:28 | -7.1254 | -88.4505 | -4162 | 0.22 | 0.24 | 0.230 | 595.8 | 32.0 | 294.7 | 12.4 | 288.2 | 9.8 | 261.9 | 13.7 | 281.6 |
| SO242/1_56-1 | SO242/1_56-1_MUC 12 | 2015-08-06T15:32:28 | -7.0736 | -88.4627 | -4149 | 0.00 | 0.01 | 0.005 | 2245.5 | 76.2 | 291.7 | 9.8 | 292.1 | 8.1 | 286.1 | 35.3 | 289.9 |
| SO242/1_56-1 | SO242/1_56-1_MUC 12 | 2015-08-06T15:32:28 | -7.0736 | -88.4627 | -4149 | 0.02 | 0.03 | 0.025 | 1028.6 | 38.6 | 255.0 | 11.2 | 254.8 | 9.1 | 265.8 | 29.5 | 258.5 |
| SO242/1_56-1 | SO242/1_56-1_MUC 12 | 2015-08-06T15:32:28 | -7.0736 | -88.4627 | -4149 | 0.06 | 0.07 | 0.065 | 824.8 | 30.0 | 370.6 | 11.1 | 364.5 | 9.5 | 403.9 | 45.4 | 379.7 |
| SO242/1_56-1 | SO242/1_56-1_MUC 12 | 2015-08-06T15:32:28 | -7.0736 | -88.4627 | -4149 | 0.14 | 0.16 | 0.150 | 405.2 | 15.0 | 188.4 | 5.9 | 198.8 | 5.1 | 221.2 | 24.8 | 202.8 |
| SO242/1_56-1 | SO242/1_56-1_MUC 12 | 2015-08-06T15:32:28 | -7.0736 | -88.4627 | -4149 | 0.22 | 0.24 | 0.230 | 368.3 | 14.2 | 181.1 | 6.0 | 193.4 | 5.1 | 206.6 | 23.2 | 193.7 |
| SO242/1_61-1 | SO242/1_61-1_MUC 13 | 2015-08-07T01:03:01 | -7.0730 | -88.4630 | -4148 | 0.00 | 0.01 | 0.005 | 1775.7 | 74.9 | 388.7 | 20.1 | 406.5 | 15.4 | 396.4 | 21.5 | 397.2 |
| SO242/1_61-1 | SO242/1_61-1_MUC 13 | 2015-08-07T01:03:01 | -7.0730 | -88.4630 | -4148 | 0.06 | 0.07 | 0.065 | 1017.2 | 48.2 | 452.1 | 16.0 | 452.0 | 12.8 | 421.7 | 18.8 | 441.9 |
| SO242/1_61-1 | SO242/1_61-1_MUC 13 | 2015-08-07T01:03:01 | -7.0730 | -88.4630 | -4148 | 0.14 | 0.16 | 0.150 | 822.1 | 40.3 | 415.7 | 15.0 | 415.6 | 12.1 | 436.1 | 19.1 | 422.5 |
| SO242/1_61-1 | SO242/1_61-1_MUC 13 | 2015-08-07T01:03:01 | -7.0730 | -88.4630 | -4148 | 0.22 | 0.24 | 0.230 | 515.5 | 20.2 | 242.0 | 11.1 | 226.2 | 8.3 | 228.7 | 12.3 | 232.3 |
| SO242/1_61-1 | SO242/1_61-1_MUC 13 | 2015-08-07T01:03:01 | -7.0730 | -88.4630 | -4148 | 0.30 | 0.32 | 0.310 | 570.3 | 20.8 | 244.6 | 7.6 | 231.7 | 6.2 | 245.2 | 27.6 | 240.5 |
| SO242/1_70-1 | SO242/1_70-1_MUC 17 | 2015-08-11T12:43:52 | -7.0733 | -88.4630 | -4128 | 0.02 | 0.03 | 0.025 | 1061.6 | 48.2 | 391.5 | 15.2 | 410.5 | 14.3 | 424.7 | 53.5 | 408.9 |
| SO242/1_70-1 | SO242/1_70-1_MUC 17 | 2015-08-11T12:43:52 | -7.0733 | -88.4630 | -4128 | 0.06 | 0.07 | 0.065 | 992.9 | 37.2 | 434.7 | 14.2 | 479.4 | 12.7 | 475.1 | 53.6 | 463.1 |
| SO242/1_70-1 | SO242/1_70-1_MUC 17 | 2015-08-11T12:43:52 | -7.0733 | -88.4630 | -4128 | 0.14 | 0.16 | 0.150 | 938.5 | 32.9 | 404.4 | 14.1 | 405.6 | 10.8 | 410.4 | 14.8 | 406.8 |
| SO242/1_70-1 | SO242/1_70-1_MUC 17 | 2015-08-11T12:43:52 | -7.0733 | -88.4630 | -4128 | 0.22 | 0.24 | 0.230 | 764.1 | 30.4 | 341.8 | 13.9 | 336.5 | 10.5 | 323.4 | 13.7 | 333.9 |
| SO242/1_74-1 | SO242/1_74-1_MUC 20 | 2015-08-12T04:39:16 | -7.0658 | -88.4516 | -4150 | 0.02 | 0.03 | 0.025 | 1293.0 | 38.0 | 480.8 | 14.0 | 473.7 | 10.8 | 463.1 | 14.7 | 472.5 |
| SO242/1_74-1 | SO242/1_74-1_MUC 20 | 2015-08-12T04:39:16 | -7.0658 | -88.4516 | -4150 | 0.06 | 0.07 | 0.065 | 1252.0 | 56.8 | 439.9 | 19.7 | 438.2 | 15.6 | 432.6 | 55.0 | 436.9 |
| SO242/1_74-1 | SO242/1_74-1_MUC 20 | 2015-08-12T04:39:16 | -7.0658 | -88.4516 | -4150 | 0.14 | 0.16 | 0.150 | 932.0 | 36.8 | 465.1 | 15.6 | 494.7 | 13.6 | 496.6 | 56.1 | 485.5 |
| SO242/1_74-1 | SO242/1_74-1_MUC 20 | 2015-08-12T04:39:16 | -7.0658 | -88.4516 | -4150 | 0.22 | 0.24 | 0.230 | 673.0 | 19.5 | 284.0 | 7.8 | 272.7 | 5.8 | 265.9 | 7.8 | 274.2 |
| SO242/1_74-1 | SO242/1_74-1_MUC 20 | 2015-08-12T04:39:16 | -7.0658 | -88.4516 | -4150 | 0.30 | 0.32 | 0.310 | 635.6 | 26.3 | 288.5 | 12.2 | 273.5 | 8.9 | 236.9 | 11.4 | 266.3 |
| SO242/1_80-1 | SO242/1_80-1_MUC 22 | 2015-08-13T06:57:23 | -7.0757 | -88.5263 | -4130 | 0.02 | 0.03 | 0.025 | 1021.0 | 35.7 | 399.9 | 9.5 | 416.5 | 9.0 | 418.4 | 50.5 | 411.6 |
| SO242/1_80-1 | SO242/1_80-1_MUC 22 | 2015-08-13T06:57:23 | -7.0757 | -88.5263 | -4130 | 0.06 | 0.07 | 0.065 | 1278.4 | 45.4 | 407.0 | 13.8 | 436.4 | 12.0 | 451.3 | 51.0 | 431.6 |
| SO242/1_80-1 | SO242/1_80-1_MUC 22 | 2015-08-13T06:57:23 | -7.0757 | -88.5263 | -4130 | 0.14 | 0.16 | 0.150 | 1357.6 | 40.1 | 559.0 | 15.5 | 530.5 | 11.7 | 532.4 | 16.3 | 540.6 |
| SO242/1_80-1 | SO242/1_80-1_MUC 22 | 2015-08-13T06:57:23 | -7.0757 | -88.5263 | -4130 | 0.22 | 0.24 | 0.230 | 1052.1 | 35.1 | 354.2 | 13.5 | 359.3 | 10.2 | 332.5 | 13.4 | 348.7 |
| SO242/1_108-1 | SO242/1_108-1_MUC 26 | 2015-08-18T00:08:10 | -7.0747 | -88.4487 | -4169 | 0.00 | 0.01 | 0.005 | 1176.5 | 36.3 | 514.1 | 14.9 | 518.0 | 5.7 | 499.2 | 15.8 | 510.4 |
| SO242/1_108-1 | SO242/1_108-1_MUC 26 | 2015-08-18T00:08:10 | -7.0747 | -88.4487 | -4169 | 0.02 | 0.03 | 0.025 | 953.2 | 36.9 | 371.5 | 15.7 | 378.6 | 12.0 | 332.6 | 15.2 | 360.9 |
| SO242/1_108-1 | SO242/1_108-1_MUC 26 | 2015-08-18T00:08:10 | -7.0747 | -88.4487 | -4169 | 0.06 | 0.07 | 0.065 | 919.1 | 33.4 | 341.2 | 13.6 | 380.2 | 10.9 | 325.3 | 13.7 | 348.9 |
| SO242/1_108-1 | SO242/1_108-1_MUC 26 | 2015-08-18T00:08:10 | -7.0747 | -88.4487 | -4169 | 0.14 | 0.16 | 0.150 | 1040.6 | 24.7 | 400.0 | 8.0 | 405.5 | 6.2 | 374.6 | 8.6 | 393.4 |
| SO242/1_108-1 | SO242/1_108-1_MUC 26 | 2015-08-18T00:08:10 | -7.0747 | -88.4487 | -4169 | 0.22 | 0.24 | 0.230 | 956.6 | 32.7 | 533.2 | 15.6 | 537.2 | 12.0 | 526.0 | 16.4 | 532.1 |
| SO242/1_108-1 | SO242/1_108-1_MUC 26 | 2015-08-18T00:08:10 | -7.0747 | -88.4487 | -4169 | 0.30 | 0.32 | 0.310 | 571.4 | 27.5 | 305.7 | 14.1 | 325.7 | 10.7 | 295.0 | 13.9 | 308.8 |
| SO242/1_129-1 | SO242/1_129-1_BC 26 | 2015-08-22T04:21:40 | -7.0562 | -88.4338 | -4144 | 0.00 | 0.01 | 0.005 | 1419.1 | 49.7 | 356.7 | 12.6 | 373.1 | 9.8 | 369.3 | 14.8 | 366.4 |
| SO242/1_129-1 | SO242/1_129-1_BC 26 | 2015-08-22T04:21:40 | -7.0562 | -88.4338 | -4144 | 0.02 | 0.03 | 0.025 | 1703.7 | 72.2 | 325.1 | 17.9 | 346.8 | 14.4 | 338.2 | 44.2 | 336.7 |
| SO242/1_129-1 | SO242/1_129-1_BC 26 | 2015-08-22T04:21:40 | -7.0562 | -88.4338 | -4144 | 0.06 | 0.07 | 0.065 | 907.2 | 35.6 | 367.2 | 13.6 | 346.4 | 10.9 | 363.9 | 41.7 | 359.2 |
| SO242/1_129-1 | SO242/1_129-1_BC 26 | 2015-08-22T04:21:40 | -7.0562 | -88.4338 | -4144 | 0.14 | 0.16 | 0.150 | 1059.0 | 34.6 | 375.6 | 13.1 | 356.3 | 9.9 | 331.4 | 12.8 | 354.4 |
| SO242/1_129-1 | SO242/1_129-1_BC 26 | 2015-08-22T04:21:40 | -7.0562 | -88.4338 | -4144 | 0.22 | 0.24 | 0.230 | 987.7 | 24.6 | 391.6 | 8.4 | 394.4 | 6.5 | 363.4 | 8.9 | 383.2 |
| SO242/1_129-1 | SO242/1_129-1_BC 26 | 2015-08-22T04:21:40 | -7.0562 | -88.4338 | -4144 | 0.30 | 0.32 | 0.310 | 550.9 | 25.5 | 225.8 | 11.5 | 243.3 | 8.9 | 215.1 | 11.1 | 228.1 |