Australian Ocean Data Network provides carbon isotopic composition measurements for three species of planktonic foraminifera collected from sediment traps in the Southern Ocean. The data, last updated in June 2026, allows for the determination of disequilibrium effects and the estimation of the oceanic Suess effect by comparing foraminiferal d13C with dissolved inorganic carbon. The sediment traps represent annual flux in environments ranging from Subtropical to Polar Frontal zones in the western Pacific/Southern Australia sector.
Use Cases
- Estimating the oceanic Suess effect based on modern depletion in foraminiferal d13C compared to core tops.
- Analyzing latitudinal trends in carbon isotope disequilibrium between foraminifera and dissolved inorganic carbon.
- Using Globigerina bulloides d13C as a nutrient tracer in Southern Ocean environments based on its correlation with seasonal nutrient changes.
- Investigating the relationship between temperature and isotopic disequilibrium in planktonic foraminifera.
Strengths
- Focuses on three specific foraminifera species (Globigerina bulloides, Globorotalia inflata, Neogloboquadrina pachyderma) enabling comparative analysis.
- Data covers a latitudinal gradient from Subtropical to Polar Frontal environments in the Southern Ocean.
- Includes comparison between sediment trap data and nearby core tops, providing a modern vs. historical perspective.
Limitations
- Column-level documentation is absent; field semantics must be inferred after download.
- Row count is unknown, which may limit suitability assessment.
- Freshness should be verified despite the 2026 update date, as the underlying data collection period is not specified.
Provenance
- Source
- Australian Ocean Data Network
- Collection Method
- Measured from sediment traps collecting annual foraminiferal flux.
- Freshness
- Last updated 2026-06-04 08:43:28.740187
- Geography
- Southern Ocean, western Pacific/Southern Australia sector, Subtropical to Polar Frontal environments.