AGSO Cruise 125: Swath-mapping and Seismic Survey of the Tasman Sea

Tasman Sea bathymetric and seismic data collected during a 1994 research cruise from Auckland to Adelaide. The survey used the French vessel L'Atalante and its SIMRAD EM12D swath-mapping system to produce maps at scales from 1:1,000,000 to 1:100,000. The dataset includes ship tracks, sonar imagery, and contour maps for transit routes and detailed survey areas off Tasmania.

Use Cases

• Modeling seafloor topography based on bathymetric contour maps mentioned in the description
• Analyzing sonar imagery for geological feature identification off Tasmania
• Studying tectonic structures using reflection seismic data collected during the cruise
• Creating high-resolution base maps for fisheries management in specific Tasmanian areas mentioned

Strengths

• Data collected using a specialized wide-angle swath-mapping system (SIMRAD EM12D)
• Includes maps at multiple scales: 1:250,000 for main survey, 1:1,000,000 for overview, and 1:100,000 for fisheries areas
• Covers a defined temporal period from 12 February to 29 March 1994

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; the underlying survey is from 1994

Provenance

Source

Geoscience Australia Data

Collection Method

Data were recorded during a dedicated marine research cruise using swath-mapping and seismic reflection systems.

Time Range

12 February 1994 to 29 March 1994

Freshness

Last updated 2026-04-30 14:54:33.561449; freshness should be verified

Geography

Tasman Sea, specifically off the coast of Tasmania, with transits from Auckland, New Zealand to Adelaide, Australia