Virtasalo, Joonas J; Schröder, Jan F; Luoma, Samrit; Majaniemi, Juha; Mursu, Juha; Scholten, Jan Christoph (2019): Loss on ignition and caesium-137 in sediments from the Hanko submarine groundwater discharge site, northern Baltic Sea, Finland [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.898673, In supplement to: Virtasalo, JJ et al. (2019): Submarine groundwater discharge site in the First Salpausselkä ice-marginal formation, south Finland. Solid Earth, 10, 405-423, https://doi.org/10.5194/se-10-405-2019
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Abstract:
Sediment samples were collected using a box corer, and cut in 1-cm sub-sample slices. The Cs-137 activity content of sub-samples was measured for 60 min using a BrightSpec bMCA-USB pulse height analyser coupled to a well-type NaI(Tl) detector. The same sub-samples were then analysed for water content and weight loss on ignition (LOI) by weighing sub-samples fresh, weighing after drying at 105 °C for 16 h, and weighing again after ignition at 550 °C for 2 h.
Keyword(s):
Coverage:
Median Latitude: 59.893340 * Median Longitude: 23.232350 * South-bound Latitude: 59.891680 * West-bound Longitude: 23.228930 * North-bound Latitude: 59.895000 * East-bound Longitude: 23.235770
Date/Time Start: 2018-05-30T00:00:00 * Date/Time End: 2018-05-31T00:00:00
Minimum DEPTH, sediment/rock: 0.005 m * Maximum DEPTH, sediment/rock: 0.095 m
Event(s):
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Virtasalo, Joonas J | |||
| 2 | Identification | ID | Virtasalo, Joonas J | Pockmark | ||
| 3 | DEPTH, sediment/rock | Depth sed | m | Virtasalo, Joonas J | Geocode | |
| 4 | Depth, top/min | Depth top | m | Virtasalo, Joonas J | ||
| 5 | Depth, bottom/max | Depth bot | m | Virtasalo, Joonas J | ||
| 6 | Water content, wet mass | Water wm | % | Virtasalo, Joonas J | Calculated from weight loss after drying at 105°C | |
| 7 | Loss on ignition | LOI | % | Virtasalo, Joonas J | Calculated from weight loss after ignition at 550 °C | |
| 8 | Caesium-137, activity per mass | 137Cs | Bq/kg | Virtasalo, Joonas J | Well-type NaI(Tl) detector, BrightSpec bMCA-USB pulse height analyser | |
| 9 | Caesium-137, standard deviation | 137Cs std dev | ± | Virtasalo, Joonas J | Well-type NaI(Tl) detector, BrightSpec bMCA-USB pulse height analyser |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Size:
105 data points
Data
| 1 Event | 2 ID | 3 Depth sed [m] | 4 Depth top [m] | 5 Depth bot [m] | 6 Water wm [%] | 7 LOI [%] | 8 137Cs [Bq/kg] | 9 137Cs std dev [±] |
|---|---|---|---|---|---|---|---|---|
| MGBC-2018-2 | D | 0.005 | 0.00 | 0.01 | 33.8 | 1.1 | ||
| MGBC-2018-2 | D | 0.015 | 0.01 | 0.02 | 31.0 | 1.0 | ||
| MGBC-2018-2 | D | 0.025 | 0.02 | 0.03 | 28.6 | 0.9 | ||
| MGBC-2018-2 | D | 0.035 | 0.03 | 0.04 | 28.9 | 0.7 | ||
| MGBC-2018-2 | D | 0.045 | 0.04 | 0.05 | 24.3 | 0.7 | ||
| MGBC-2018-2 | D | 0.055 | 0.05 | 0.06 | 24.0 | 0.7 | ||
| MGBC-2018-2 | D | 0.065 | 0.06 | 0.07 | 22.1 | 0.4 | ||
| MGBC-2018-3 | E | 0.005 | 0.00 | 0.01 | 60.0 | 7.6 | 29.2 | 4.8 |
| MGBC-2018-3 | E | 0.015 | 0.01 | 0.02 | 55.9 | 6.1 | 27.9 | 6.7 |
| MGBC-2018-3 | E | 0.025 | 0.02 | 0.03 | 58.9 | 6.0 | 44.2 | 7.0 |
| MGBC-2018-3 | E | 0.035 | 0.03 | 0.04 | 58.1 | 6.5 | 34.4 | 5.4 |
| MGBC-2018-3 | E | 0.045 | 0.04 | 0.05 | 64.4 | 7.6 | 33.6 | 5.4 |
| MGBC-2018-3 | E | 0.055 | 0.05 | 0.06 | 68.2 | 8.6 | 37.9 | 6.2 |
| MGBC-2018-3 | E | 0.065 | 0.06 | 0.07 | 53.3 | 4.0 | 34.9 | 5.7 |
| MGBC-2018-3 | E | 0.075 | 0.07 | 0.08 | 26.1 | 1.0 | 9.3 | 3.0 |
| MGBC-2018-3 | E | 0.085 | 0.08 | 0.09 | 25.3 | 1.0 | 12.5 | 3.8 |
| MGBC-2018-3 | E | 0.095 | 0.09 | 0.10 | 24.6 | 1.0 | 17.9 | 4.0 |