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

AGSO Cruise 125 collected swath-mapping and reflection seismic data off Tasmania and during transits between New Zealand and Australia in 1994. The dataset includes bathymetric maps at scales of 1:250,000, 1:1,000,000, and 1:100,000, produced from the SIMRAD EM12D system on the R.V. L'Atalante. The Australian Ocean Data Network hosts the report and associated map files.

Use Cases

• Analyze seafloor bathymetry and topography based on the detailed contour maps mentioned in the description.
• Study sonar imagery overlays for geological feature identification off the Tasmanian coast.
• Map specific fisheries areas using the provided 1:100,000 scale maps with 20-meter contours.
• Investigate wide-angle swath-mapping data collection methods using the SIMRAD EM12D system.

Strengths

• Data collection spanned a specific cruise from February 12 to March 29, 1994.
• Maps were produced at multiple scales, including 1:250,000 for detailed survey areas and 1:100,000 for specific fisheries zones.
• The swath-mapping system is noted to have functioned well throughout the cruise.

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 temporal bias inherent to a single 1994 survey.

Provenance

Source

Australian Ocean Data Network

Collection Method

Data were recorded using the SIMRAD EM12D swath-mapping system on the French research vessel l'Atalante.

Time Range

February 12, 1994 to March 29, 1994

Freshness

Last updated 2026-06-04 06:59:33.391791; freshness should be verified.

Geography

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