Data · collection
US Joint Global Ocean Flux Study (JGOFS) water column and sediment trap samples
Listed in NASA Earthdata CMR
This data set contains concentrations of naturally-occurring radionuclides in seawater (total - dissolved plus particulate - concentrations of Th-230, Th-232, Pa-231, Be-10) and in particulate matter collected by sediment traps (U-238, U-234, Th-230, Th-232, Pa-231 and Be-10).
Description
Concentrations of U-series nuclides were measured by isotope dilution inductively-coupled mass spectrometry. Concentrations of Be-10 were measured by accelerator mass spectrometry.
Samples were collected as part of the US Joint Global Ocean Flux Study (JGOFS) Antarctic Environment and Southern Ocean Process Study (AESOPS). Samples were collected along 170 degrees West, between approximately 54 degrees S and 66 degrees S, as well as in the Ross Sea. The study was designed to determine: (1) the intensity with which these particle-reactive nuclides are scavenged from the water column of the Southern Ocean; (2) the dependence on particle composition for the scavenging intensity of each nuclide; and (3) lateral transport of dissolved nuclides by advection and mixing.
Links
Get the data
- U.S. JGOFS Southern Ocean (AESOPS) Data usjgofs.whoi.edu/southernobjects.html ↗
download · from NASA CMR
Catalogue records · 2
- CMR record cmr.earthdata.nasa.gov/search/concepts/C1214612298-SCIOPS.html ↗
catalogue entry · from NASA CMR
- CMR UMM-JSON cmr.earthdata.nasa.gov/search/concepts/C1214612298-SCIOPS.umm_json ↗
metadata API · from NASA CMR
Topics
- Stated by source
- Not provided · U, Th, Pa, Be
- Inferred from text
- Mass spectrometry 75%
Provenance · 1 source records, 9 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| NASA Earthdata CMR | C1214612298-SCIOPS | 15 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/oceans/ocean-chemistry/radionuclides/u-th-pa-be | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[modality].local:modality:mass-spectrometry | enrichment · NASA CMR | keyword-concept-rules@1.0.0 | title+description (75%) |
| concepts[platform].gcmd_platform:not-provided | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| description | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/Abstract |
| spatial | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/SpatialExtent |
| temporal | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/TemporalExtents |
| title | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/EntryTitle |
| version_label | source · NASA CMR | connector:nasa_cmr@1.0.0 |