Australian Continental Margin Seabed Biogeochemical Survey Data

Over 350 seabed sediment samples were collected from Australia's western, northern, and eastern continental margins during federal government surveys from 2007 to 2014. The dataset includes parameters for organic matter source, concentration, and bioavailability, linking sediment properties to water column productivity.

Use Cases

• Analyze δ13C and δ15N values to trace organic matter sources and nitrogen fixation processes across the continental margin.
• Model relationships between surface area normalised TOC (OC:SA) and water column productivity metrics like MODIS data.
• Investigate sediment oxygen demand (SOD) and total sediment metabolism (TSM) to assess benthic carbon cycling and bioavailability.
• Classify sediments as organic-poor or organic-rich using total organic carbon (%TOC) data to identify regions of high benthic production.

Strengths

• Spatially extensive coverage from over 350 sample locations across three major Australian continental margins.
• Multi-year temporal coverage from surveys conducted between 2007 and 2014.
• Includes multiple analytical parameters for organic matter source, concentration, and bioavailability.

Limitations

• Sample data and specific column structure are unavailable, limiting immediate analytical use.
• Data is presented in HTML format, which may require extraction and structuring for computational analysis.

Provenance

Source

Geoscience Australia Data, published in Marine and Freshwater Research.

Collection Method

Seabed samples collected during federal government marine surveys.

Time Range

2007 to 2014

Freshness

Metadata last updated March 2026, though underlying survey data is from 2007-2014.

Geography

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