AGSO Cruise 125: Swath-Mapping and Seismic Survey of the Tasman Sea, 1994

February to March 1994 survey data collected by the Australian Geological Survey Organisation (AGSO) using the French research vessel L'Atalante. The Tasmante cruise mapped seafloor bathymetry and collected reflection seismic data off Tasmania and on transits between New Zealand and Adelaide. The dataset includes maps at scales from 1:100,000 to 1:1,000,000, featuring ship tracks, sonar imagery, and bathymetric contours.

Use Cases

• Modeling seafloor topography based on bathymetric contour maps at 20, 25, and 50-meter intervals.
• Analyzing geological features from sonar imagery overlays on contour maps.
• Planning marine research or resource exploration based on detailed ship track and survey area maps.
• Studying sediment layers and sub-seafloor structures using reflection seismic data mentioned in the cruise report.

Strengths

• Data covers a specific temporal range from 12 February to 29 March 1994.
• Includes multi-scale map products from 1:100,000 to 1:1,000,000.
• Utilized a specific wide-angle swath-mapping system (SIMRAD EM12D) noted for its capability.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Data files are in PDF and HTML formats, which may require extraction for computational analysis.
• Row count is unknown, which may limit suitability assessment.

Provenance

Source

Australian Ocean Data Network

Collection Method

Swath-mapping and reflection seismic survey conducted from the research vessel L'Atalante.

Time Range

12 February 1994 to 29 March 1994

Freshness

Last updated 2026-05-04 23:22:14.994768; freshness should be verified.

Geography

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