Concentrations of naturally-occurring radionuclides in seawater and sediment trap particulate matter from the Southern Ocean. Samples were collected along 170 degrees West between 54 and 66 degrees South and in the Ross Sea as part of the US Joint Global Ocean Flux Study Antarctic Environment and Southern Ocean Process Study. Measurements were made using isotope dilution inductively-coupled mass spectrometry and accelerator mass spectrometry.
Use Cases
- Modeling particle scavenging intensity in the Southern Ocean based on radionuclide concentrations.
- Analyzing the dependence of scavenging on particle composition based on the measured nuclide suite.
- Studying lateral transport of dissolved nuclides by advection and mixing in the Antarctic region.
Strengths
- Data includes concentrations for multiple radionuclides (Th-230, Th 232, Pa-231, Be-10, U-238, U-234).
- Samples were collected along a defined transect (170°W) and in the Ross Sea, providing spatial context.
- Measurements were made using specific, high-precision methods (isotope dilution ICP-MS and AMS).
Limitations
- Column-level documentation is absent; field semantics must be inferred after download.
- Row count is unknown, which may limit suitability assessment.
- Last update date is unknown; freshness unverified.
Provenance
- Source
- SCIOPS via NASA Earthdata
- Collection Method
- Samples collected by sediment traps and from seawater during the US JGOFS AESOPS study.
- Time Range
- null
- Freshness
- null
- Geography
- Southern Ocean along 170°W between ~54°S and 66°S, and the Ross Sea.