Contaminant Levels in Antarctic Sediments and Marine Life

Contamination data from McMurdo Sound, Antarctica, details concentrations of total hydrocarbons, PCBs, and PAHs in marine sediments, bivalves, and sponges. The dataset compares levels near scientific bases like Scott Base and McMurdo Station against less contaminated reference sites. It was published by SCIOPS and last updated in March 2002.

Use Cases

• Compare THC concentrations between sediments from Scott Base (3.0-134 μg g-1) and McMurdo Station.
• Analyze PCB content variation across sites, from below detection (<5 ng g-1) at Turtle Rock to 373 ng g-1 elsewhere.
• Assess PAH levels in samples, ranging from 0.1 to 2.1 μg g-1.
• Model the relationship between contamination levels and proximity to scientific bases using site location data.

Strengths

• Provides quantitative concentration ranges for three major contaminant groups: THC, PCBs, and PAHs.
• Includes comparative data from both polluted (McMurdo Station) and pristine (Turtle Rock) reference sites.

Limitations

• Dataset is temporally stale, with last update in 2002.
• Specific sample size, row count, and geographic coordinates for sampling points are unknown.
• PCB concentrations for some sites are reported only as below a detection limit (<5 ng g-1).

Provenance

Source

SCIOPS via NASA Earthdata.

Collection Method

Environmental sampling and laboratory analysis of marine sediments, bivalves, and sponges.

Time Range

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Freshness

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Geography

McMurdo Sound, Antarctica, including sites near Scott Base, McMurdo Station, Turtle Rock, and Cape Evans.