Water Extractable Nutrients in Antarctic Marine Sediment Cores, Summer 2009/10

Marine sediment cores collected near Davis Station, Antarctica, during the summer of 2009/10. The dataset contains concentrations of water-extractable nutrients, including anions and ammonium, analyzed using ion chromatography and colorimetry. The data was produced by the Australian Antarctic Data Centre (AU_AADC) and last updated in March 2010.

Use Cases

• Modeling nutrient flux from sediments based on concentrations of anions like nitrate and phosphate.
• Assessing the impact of local wastewater treatment on marine chemistry based on ammonium levels.
• Calibrating or validating ion chromatography methods for sediment analysis based on the detailed protocol.
• Studying seasonal nutrient dynamics in Antarctic coastal waters based on the summer sampling period.

Strengths

• Detailed, peer-reviewable laboratory protocols for nutrient extraction and analysis are provided.
• Analysis covers multiple nutrient species (F-, Cl-, Br-, NO2-, NO3-, PO4^2-, SO4^2-, NH4+).
• Specific calibration ranges (e.g., 0-20 mg L-1 for anions, 0-10 mg L-1 for ammonium) are documented.

Limitations

• Description metadata is limited; actual data quality requires manual inspection after download.
• Last updated 2010-03-18 23:59:59.999000; freshness should be verified.
• Column-level documentation is absent; field semantics must be inferred after download.

Provenance

Source

Australian Antarctic Data Centre (AU_AADC) via NASA Earthdata.

Collection Method

Sediment cores were collected, and nutrients were extracted via a 2:5 w/v aqueous process followed by ion chromatography and colorimetric analysis.

Time Range

Summer 2009/10

Freshness

Last updated 2010-03-18 23:59:59.999000

Geography

Marine sediments near Davis Station, Antarctica.