Great Barrier Reef Seabed Sediments and Geomorphology, Regional Spatial Analysis

The Great Barrier Reef Marine Park's inter-reefal seabed, comprising 95% of the park area, is characterized in this regional spatial analysis. It synthesizes over 3,000 sediment samples from Geoscience Australia's MARS database with a geomorphic features dataset, updating models since the 1960s-1980s. The dataset reveals quantitative regional trends and local-scale patterns in sediment grain sizes like gravel, sand, and mud.

Use Cases

• Map sediment distribution patterns based on regional trends in grain size concentrations described in the summary
• Analyze seabed geomorphology based on the integrated geomorphic features dataset
• Model habitat suitability based on the physical characteristics of the inter-reefal seabed
• Support marine spatial planning based on the synthesis of sedimentology and geomorphology within planning zones

Strengths

• Contains over 3,000 sediment samples, substantially improving data coverage for inter-reefal areas
• Represents the first regional synthesis of surface sedimentology and geomorphology for the GBR since pioneering work in the 1960s-1980s
• Provides a quantitative dataset revealing both regional trends and local-scale facies characteristics

Limitations

• Column-level documentation is absent; field semantics must be inferred after download
• Row count is unknown, which may limit suitability assessment
• Data may reflect geographic bias inherent to data_gov_au, focusing on sampled inter-reefal zones

Provenance

Source

Australian Ocean Data Network and Geoscience Australia

Collection Method

Synthesis of sediment samples from the MARS database and integration with the Geomorphic Features dataset.

Freshness

Last updated 2026-06-23 00:32:19.414995; freshness should be verified

Geography

Great Barrier Reef Marine Park, specifically inter-reefal (non-reefal) seabed environments.