Barchan Sand Bank Morphology and Migration in Western Torres Strait, Australia

Large barchan-shaped sand deposits in the Torres Strait exhibit hybrid characteristics of both subaerial dunes and subaqueous banks. Satellite imagery shows these deposits migrate westward at 10-15 meters per year and shed sediment from their horns. The data, hosted by the Australian Ocean Data Network, was last updated in June 2026.

Use Cases

• Modeling sediment transport and deposition based on observed migration rates and current regimes.
• Classifying hybrid coastal landforms based on described characteristics of dunes and sand banks.
• Analyzing the influence of seasonal wind-driven currents on geomorphic form.
• Validating hydrodynamic models using the presence of mutually evasive channels as a feature.

Strengths

• Includes quantified migration rates of 10-15 meters per year.
• Describes specific hybrid geomorphic features (e.g., horns, superimposed sandwaves, mutually evasive channels).
• Links form to environmental drivers like net westward currents and seasonal trade winds.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data freshness should be verified as the last update timestamp is in the future (2026-06 23).

Provenance

Source

Australian Ocean Data Network

Collection Method

Analysis of satellite imagery and previous oceanographic work.

Time Range

null

Freshness

Last updated 2026-06-23 04:57:56.200017

Geography

Western Torres Strait, Northern Australia