Sea Ice Draft and Bio-Optical 3D Maps from AUV Missions

AU_AADC collected 3-D mapping data of sea ice draft and bio-optical parameters during the 2012 SIPEX-II voyage. Four AUV missions beneath sea ice gathered raw multibeam sonar, hyperspectral radiometer, and video data. The unprocessed data was archived in 2012, with final processing expected in 2013.

Use Cases

• Model sea ice draft and roughness from multibeam sonar point-cloud data.
• Analyze under-ice light fields and algal biomass using hyperspectral radiometer readings.
• Validate AUV navigation algorithms using Doppler Velocity Log (DVL) bottom-tracking data against LongBaseLine transponder positions.
• Annotate video footage from the AUV's GoPro to identify under-ice biological features or structures.

Strengths

• Data from four distinct AUV missions beneath sea ice during the SIPEX-II voyage.
• Includes multiple sensor modalities: multibeam sonar, hyperspectral radiometer, and 1080p video.
• Preliminary processed figures and MATLAB routines are provided for initial exploration.

Limitations

• Data is unprocessed and raw, requiring significant expertise and specialized tools for analysis.
• Critical sensors like the CTD were uncalibrated and unsupported, limiting their scientific utility.
• Sample size is limited to four mission locations from a single 2012 expedition.

Provenance

Source

Australian Antarctic Data Centre (AU_AADC), with AUV operations conducted by the Deep Submergence Laboratory at Woods Hole Oceanographic Institution.

Collection Method

Data gathered by the 'JAGUAR' Autonomous Underwater Vehicle equipped with Multibeam SONAR, a Hyperspectral radiometer, a DVL, and a GoPro camera.

Time Range

Missions conducted between September and October 2012 during the SIPEX-II voyage.

Freshness

Data is from 2012 and was considered raw at archive; final processing status is unknown.

Geography

Survey grids beneath sea ice in the Antarctic region during the SIPEX-II expedition.