Southern Ocean Hydroacoustic Data For Krill Abundance Studies

Hydroacoustics data collected by the Australian Antarctic Division during Southern Ocean research voyages from 1993 to 2004. The original collection was archived on 14 hard disks, 1 CD-R, and 1 DVD-R. This data was gathered under projects ASAC 357 and ASAC 1250, focusing on krill abundance and distribution.

Use Cases

• Estimate krill biomass and distribution from acoustic backscatter data.
• Analyze temporal trends in marine life populations across a 12-year observation period.
• Correlate acoustic signal features with penguin foraging behavior studies.
• Model krill flux dynamics using hydroacoustic measurements from specific voyages.
• Validate and improve acoustic survey methodologies for Antarctic ecosystems.

Strengths

• Data spans a 12-year time series from 1993 to 2004.
• Collection originates from multiple dedicated research voyages across the Southern Ocean.
• Associated with specific, documented research projects (ASAC 357, ASAC 1250).

Limitations

• The dataset is a legacy physical archive (hard disks, CDs) superseded by a newer digital collection, potentially complicating access.
• Specific data formats, row counts, and column structures are not described.
• Data collection ended in 2004, limiting analysis of recent ecological changes.

Provenance

Source

Australian Antarctic Division (AU_AADC).

Collection Method

Hydroacoustic data collected from research vessel cruises.

Time Range

1993 to 2004.

Freshness

null

Geography

Southern Ocean, including the region of Prydz Bay, Antarctica.