IN2026_V01: Sub-bottom Profiler Data from Antarctic RV Investigator Voyage

1079 raw files (20.2 GB) of sub-bottom profiler data collected from the RV Investigator voyage IN2026_V01 between January 02 and February 25, 2026. The Kongsberg SBP29 instrument acquired specular reflections at sediment interfaces using a 2.5 to 7 kHz frequency sweep, logged continuously throughout the voyage. Data are stored in .raw and processed .seg (SEG-Y) formats by the Australian Ocean Data Network.

Use Cases

• Map sediment layer thickness and structure based on sub-bottom profiler reflections.
• Analyze seafloor composition and stratigraphy using the 2.5-7 kHz acoustic frequency data.
• Study the Cook Ice Ecosystems and Sediments (COOKIES) region using continuous voyage logging.
• Process acoustic data with gain correction and matched filters as described in the real-time processing stream.

Strengths

• Data collection was continuous for the entire voyage duration from January 02 to February 25, 2026.
• Includes both raw (.raw) and processed (.seg SEG-Y) formats, totaling over 40 GB across 2154 files.
• The SBP29 profiler provides a 3° by 3° angular resolution for detailed acoustic imaging.

Limitations

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

Provenance

Source

Australian Ocean Data Network via data_gov_au.

Collection Method

Acquired using a Kongsberg SBP29 sub-bottom profiler during the RV Investigator voyage IN2026_V01.

Time Range

January 02, 2026 to February 25, 2026 (AEST).

Freshness

Last updated 2026-06-27 21:12:36.988984; freshness should be verified.

Geography

Voyage departed from and returned to Hobart, Tasmania; likely covers areas of the Antarctic continental shelf relevant to the 'Cook Ice Ecosystems and Sediments (COOKIES)' project.