Darwin Harbour Seabed Habitat Maps from 2011 and 2013 Surveys

2011 and 2013 seabed mapping surveys in Darwin Harbour collected high-resolution multibeam sonar bathymetry, acoustic backscatter, video observations, and physical sediment samples. The data was used to produce detailed bathymetric maps and classify the seabed into six seascape classes based on substrate, relief, and bedform. This work was a collaboration between Geoscience Australia, the Australian Institute of Marine Science, and the Northern Territory Government.

Use Cases

• Predictive modeling of marine biodiversity based on continuous physical variables like bathymetry and rugosity.
• Spatial planning for marine protected areas based on classified seascape and habitat maps.
• Analysis of seabed geomorphic features like banks, ridges, and channels using detailed bathymetric data.
• Studying the relationship between acoustically hard/soft substrates and associated biological communities like sponge gardens.

Strengths

• Data collection involved high-resolution multibeam sonar and acoustic backscatter, providing detailed spatial coverage.
• Surveys were conducted in two stages (2011 and 2013), incorporating multiple data types including video, photos, and physical samples.
• The classification produced six distinct seascape classes derived from an unsupervised scheme using seabed substrate, relief, and bedform.

Limitations

• Description metadata is limited; actual data quality requires manual inspection after download.
• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.

Provenance

Source

Geoscience Australia, Australian Institute of Marine Science, Department of Land Resource Management, Darwin Port Corporation.

Collection Method

Multibeam survey (2011) and seabed sampling survey (2013) using vessels MV Matthew Flinders and MV John Hickman.

Time Range

2011, 2013

Freshness

Last updated 2026-05-14 05:14:52.325379; freshness should be verified.

Geography

Darwin Harbour, Northern Territory, Australia.