The Ocean Archive System searches our original datasets as they were submitted to us, not individual points or profiles. If you want to search and retrieve ocean profiles in a common format, or objectively analyzed fields, your better option may be to use one of our project applications. See: Access Data
OAS accession Detail for 0291583
| << previous | |revision: 3 |
| accessions_id: | 0291583 | archive |
|---|---|
| Title: | Radium and thorium isotopes measured in the Western Arctic as part of the 2015 US GEOTRACES Arctic Cruise on the USCGC Healy (HLY1502) from August to October 2015 (NCEI Accession 0291583) |
| Abstract: | This dataset contains data collected on USCGC Healy during cruise HLY1502 in the Arctic Ocean, Bering Sea, and Chukchi Sea from 2015-08-12 to 2015-10-08. These data include depth. The instruments used to collect these data include Large Volume Pumping System-WTS-LV, Niskin bottle, Pump, and Radium Delayed Coincidence Counter. These data were collected by Willard S Moore of University of South Carolina and Matthew A. Charette of Woods Hole Oceanographic Institution as part of the "Collaborative Research: GEOTRACES Arctic Section: Radium and Thorium Isotopes as Natural Geochemical Tracers in the Arctic Ocean (Arctic GEOTRACES Ra Th)" and "U.S. Arctic GEOTRACES Study (U.S. GEOTRACES Arctic)" projects and "U.S. GEOTRACES (U.S. GEOTRACES)" program. The Biological and Chemical Oceanography Data Management Office (BCO-DMO) submitted these data to NCEI on 2020-04-07. The following is the text of the dataset description provided by BCO-DMO: Radium and thorium isotopes measured in the Western Arctic as part of the 2015 US GEOTRACES Arctic Cruise on the USCGC Healy Dataset Description: Radium and thorium isotopes measured in the Western Arctic as part of the 2015 US GEOTRACES Arctic Cruise. Please contact the PI and Co-PI (Charette and Moore) prior to use of these data in publications. |
| Date received: | 20200407 |
| Start date: | 20150812 |
| End date: | 20151008 |
| Seanames: | Arctic Ocean, Bering Sea, Chukchi Sea |
| West boundary: | 167.111 |
| East boundary: | 43.098 |
| North boundary: | 89.992 |
| South boundary: | 60.176 |
| Observation types: | |
| Instrument types: | Flow-through pump, Niskin bottle |
| Datatypes: | DEPTH - OBSERVATION |
| Submitter: | |
| Submitting institution: | Biological and Chemical Oceanography Data Management Office |
| Collecting institutions: | University of South Carolina, Woods Hole Oceanographic Institution |
| Contributing projects: | GEOTRACES |
| Platforms: | Healy (33HQ) |
| Number of observations: | |
| Supplementary information: | Acquisition Description: Water column sampling: Radium and thorium isotopes were collected on manganese-coated cartridges filtered at depth using an adapted McLane in situ pump (WTS-LV). The pumps were programmed to filter 1500-2000L of seawater per deployment. Water (15-25 L) was also collected at the same depth using a 30L Niskin bottle; these samples were filtered (at Surface water sampling: Surface water radium samples (280 L) were collected from approximately 2 m using a submersible surface pump and filtered through a manganese coated acrylic fiber, which quantitatively scavenges radium from the seawater. Fiber samples were then ashed in a muffle furnace at 820 degrees C for 24 hours and the fiber ash was transferred to polystyrene vials, sealed with epoxy (to prevent 222Rn loss), and counted on high purity, well-type germanium detectors to measure 228Ra, using the lines of 228Ac (338 KeV and 911 KeV), and 226Ra, using the line for 214Pb (352 KeV). Detector efficiencies were determined by measuring ashed fiber standards prepared with a standard solution containing 226Ra and 232Th with daughters in equilibrium. |
| Availability date: | |
| Metadata version: | 3 |
| Keydate: | 2024-04-21 17:09:50+00 |
| Editdate: | 2024-05-29 14:21:48+00 |