Biogeochemical Sediment Data from Australian Continental Margins

Over 350 seabed samples were collected from Australia's western, northern, and eastern continental margins during federal government surveys from 2007 to 2014. The dataset contains biogeochemical parameters for organic matter analysis, including source, concentration, and bioavailability measures. It was compiled by researchers from the Australian Ocean Data Network and published in 2017.

Use Cases

• Model water column productivity (MODIS) using organic carbon concentration metrics like %TOC and OC:SA.
• Analyze organic matter sources and nitrogen cycling via isotopic signatures (δ13C, δ15N) and C:N ratios.
• Assess sediment metabolism and oxygen demand through features like total sediment metabolism (TSM) and sediment oxygen demand (SOD).
• Investigate organic matter freshness and degradation using chlorin indices and total reactive chlorins.
• Identify regions of high benthic production or oligotrophy based on global comparisons of organic matter concentration.

Strengths

• Samples from over 350 distinct locations provide broad spatial coverage.
• Data includes 15+ specific biogeochemical parameters per sample for multi-faceted analysis.
• Covers a 7-year collection period (2007-2014) from government surveys.

Limitations

• Sample size of ~350 may be limited for training complex machine learning models.
• Geographic scope is restricted to Australia's continental margins, limiting global applicability.
• Data is from 2007-2014 and may not reflect current ocean conditions.

Provenance

Source

Australian Ocean Data Network, based on federal government surveys.

Collection Method

Physical collection and laboratory analysis of seabed sediment samples.

Time Range

2007-2014

Freshness

null

Geography

Australia's western, northern, and eastern continental margins.