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OAS accession Detail for 0291398
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| accessions_id: | 0291398 | archive |
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| Title: | Desorbed Radium from Kolyma (Russia), Ellice (Canada), and Kodiak Island (USA) Rivers from 2018-07-30 to 2019-09-10 (NCEI Accession 0291398) |
| Abstract: | This dataset contains chemical data collected in the East Siberian Sea and Gulf of Alaska from 2018-07-30 to 2019-09-10. These data include radium-226 and radium-228. The instruments used to collect these data include Gamma Ray Spectrometer, Pump, and Radium Delayed Coincidence Counter. These data were collected by Emma J. Bullock and Matthew A. Charette of Woods Hole Oceanographic Institution as part of the "Collaborative Research: US GEOTRACES PMT: Sources and Rates of Trace Element and Isotope Cycling Derived from the Radium Quartet (PMT Radium Isotopes)" project. The Biological and Chemical Oceanography Data Management Office (BCO-DMO) submitted these data to NCEI on 2022-08-17. The following is the text of the dataset description provided by BCO-DMO: Minor Arctic Rivers - Desorbed Radium Dataset Description: Acquisition Description: Samples were collected in the Ellice River in August and September 2017, the Kolyma River in June and September 2019, and the Buskin, Sustina, Matanuska, and Knik Rivers in September 2019 . The Ellice River is located in Nunavut, Canada, on the mainland side of the Canadian Arctic Archipelago. The Kolyma River is a major river in Siberia, draining into the East Siberian Sea and represents the largest Arctic river basin underlain by continuous permafrost. The Buskin River is located on Kodiak Island, AK, while the Sustina, Matanuska, and Knik Rivers drain into Cook Inlet near Anchorage, AK. The samples were collected using either a bilge or well pump and the river water was passed through a 1 or 5 μm prefilter to remove suspended sediment before being filtered at Samples with low activities (0.4 dpm per sample). For this method, the fibers were ashed (880 °C, 16 h), homogenized, capped with epoxy resin, and left for >3 weeks to obtain secular equilibrium between 226Ra and its daughter radionuclides. The samples were then counted in a well-type gamma spectrometer for 228Ra (via 228Ac at 338 keV) and 226Ra (via 214Pb at 351.9 keV) (Charette et al., 2001). When not specifically listed, errors are 10%. |
| Date received: | 20220817 |
| Start date: | 20180730 |
| End date: | 20190910 |
| Seanames: | East Siberian Sea, Gulf of Alaska |
| West boundary: | 161.548 |
| East boundary: | -149.251 |
| North boundary: | 69.622 |
| South boundary: | 57.756 |
| Observation types: | chemical |
| Instrument types: | Flow-through pump |
| Datatypes: | RADIUM ISOTOPES |
| Submitter: | |
| Submitting institution: | Biological and Chemical Oceanography Data Management Office |
| Collecting institutions: | Woods Hole Oceanographic Institution |
| Contributing projects: | |
| Platforms: | |
| Number of observations: | |
| Supplementary information: | |
| Availability date: | |
| Metadata version: | 1 |
| Keydate: | 2024-04-20 16:00:16+00 |
| Editdate: | 2024-04-20 16:00:56+00 |