Gerland, Sebastian; Lind, Bjørn; Dowdall, Mark; Karcher, Michael J; Kolstad, Anne Kathrine (2011): Table 1: Technetium-99 in seawater in the West Spitsbergen Current and adjacent areas, sorted from east to west [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.771447, Supplement to: Gerland, S et al. (2003): 99Tc in seawater in the West Spitsbergen Current and adjacent areas. Journal of Environmental Radioactivity, 69(1-2), 119-127, https://doi.org/10.1016/S0265-931X(03)00090-0
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Abstract:
99Tc levels were measured in seawater samples collected between 2000 and 2002 in the West Spitsbergen Current (WSC) and along the western coast of Svalbard or Spitzbergen and compared with available oceanographic 3-D modelling results for the late 1990s. Additional data from related regions are also presented in order to support the data interpretation. The seawater in the Arctic fjord Kongsfjorden on the western coast of Svalbard is influenced by the WSC, as shown by the 99Tc levels in surface water. By means of the WSC, 99Tc reaches the Eastern Fram Strait, where one branch of the WSC turns west into the East Greenland Current (EGC), and another branch continues northwards into the Arctic Ocean. Surface seawater collected in the central part of the WSC during a cruise on board the R/V "Polarstern" in the summer of 2000, showed higher levels of 99Tc than samples measured in Kongsfjorden in the spring of 2000. However, all levels measured in surface water are of the same order of magnitude. Data from sampling of deeper water in the WSC and EGC provide information pertaining to the lateral distribution of 99Tc. In all vertical profiling surveys (conducted in spring and summer), the highest levels of 99Tc were found in surface water. Comparison with oceanographic 3-D modelling indicates both significant seasonal variations in the lateral stratification of the WSC and variations with depth over shorter vertical distances. This information can be applied in sampling strategies, environmental monitoring, long-range transport of pollutants and physical oceanography.
Coverage:
Median Latitude: 78.800325 * Median Longitude: 8.906792 * South-bound Latitude: 78.015000 * West-bound Longitude: -4.993000 * North-bound Latitude: 78.993000 * East-bound Longitude: 15.311700
Date/Time Start: 2000-05-16T00:00:00 * Date/Time End: 2002-07-10T00:00:00
Minimum DEPTH, water: 0 m * Maximum DEPTH, water: 1000 m
Event(s):
PS57/173-1 * Latitude: 78.833800 * Longitude: 4.046000 * Date/Time: 2000-08-04T04:06:00 * Elevation: -2292.0 m * Location: Arctic Ocean * Campaign: ARK-XVI/2 (PS57) * Basis: Polarstern * Method/Device: CTD/Rosette (CTD-RO)
PS57/173-3 * Latitude: 78.834300 * Longitude: 4.041700 * Date/Time: 2000-08-04T07:20:00 * Elevation: -2292.0 m * Location: Arctic Ocean * Campaign: ARK-XVI/2 (PS57) * Basis: Polarstern * Method/Device: CTD/Rosette (CTD-RO)
PS57/197-1 * Latitude: 78.993000 * Longitude: -4.993000 * Date/Time: 2000-08-08T20:45:00 * Elevation: -1283.0 m * Location: Arctic Ocean * Campaign: ARK-XVI/2 (PS57) * Basis: Polarstern * Method/Device: Giant water sampler (GWS)
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | ||||
| 2 | Area/locality | Area | Gerland, Sebastian | |||
| 3 | Date/Time of event | Date/Time | ||||
| 4 | Latitude of event | Latitude | ||||
| 5 | Longitude of event | Longitude | ||||
| 6 | DEPTH, water | Depth water | m | Geocode | ||
| 7 | Technetium-99 | 99Tc | Bq/m3 | Gerland, Sebastian | ||
| 8 | Technetium-99, standard deviation | 99Tc std dev | ± | Gerland, Sebastian |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
48 data points
Data
| 1 Event | 2 Area | 3 Date/Time | 4 Latitude | 5 Longitude | 6 Depth water [m] | 7 99Tc [Bq/m3] | 8 99Tc std dev [±] |
|---|---|---|---|---|---|---|---|
| SV01-1c | Isfjorden | 2001-05-18 | 78.2950 | 15.3117 | 55 | 0.34 | 0.12 |
| SV01-11b | Inner Kongsfjorden | 2001-05-28 | 78.9683 | 12.2517 | 0 | 0.21 | 0.04 |
| SV00-2a | Inner Kongsfjorden | 2000-05-17 | 78.9167 | 12.2233 | 0 | 0.21 | 0.03 |
| SV00-4b | Central Kongsfjorden | 2000-05-19 | 78.9283 | 11.9383 | 0 | 0.25 | 0.03 |
| SV01-9b | Central Kongsfjorden | 2001-05-24 | 78.9283 | 11.9383 | 0 | 0.20 | 0.03 |
| SV00-1b | Outer Kongsfjorden | 2000-05-16 | 78.9850 | 11.7250 | 0 | 0.26 | 0.03 |
| SV02-MS1 | Outer Kongsfjorden | 2002-07-10 | 78.9867 | 11.9217 | 0 | 0.18 | 0.07 |
| PS57/264-3 | West Spitsbergen Current | 2000-08-18 | 78.0150 | 8.0070 | 0 | 0.39 | 0.05 |
| PS57/264-2 | West Spitsbergen Current | 2000-08-18 | 78.9195 | 8.4698 | 100 | 0.27 | 0.03 |
| PS57/264-2 | West Spitsbergen Current | 2000-08-18 | 78.9195 | 8.4698 | 465 | 0.17 | 0.03 |
| PS57/173-3 | West West Spitsbergen Current | 2000-08-04 | 78.8343 | 4.0417 | 0 | 0.22 | 0.03 |
| PS57/173-3 | West West Spitsbergen Current | 2000-08-04 | 78.8343 | 4.0417 | 152 | 0.14 | 0.03 |
| PS57/173-1 | West West Spitsbergen Current | 2000-08-04 | 78.8338 | 4.0460 | 1000 | 0.04 | 0.02 |
| PS57/197-1 | Western East Greenland Current | 2000-08-08 | 78.9930 | -4.9930 | 100 | 0.18 | 0.03 |
| PS57/197-1 | Western East Greenland Current | 2000-08-08 | 78.9930 | -4.9930 | 350 | 0.16 | 0.04 |
| PS57/197-1 | Western East Greenland Current | 2000-08-08 | 78.9930 | -4.9930 | 1000 | 0.05 | 0.02 |