Ocean Dawn 2002 Acoustic Data For Blue Grenadier Spawning

OCD200201 contains 38kHz Simrad ES60 acoustic data from the FV Ocean Dawn, collected during commercial fishing for spawning blue grenadier off the Tasmanian west coast in 2002. The dataset is a subset of a larger FRDC project involving three factory freezer vessels and is held by the CSIRO Marine Science Acoustic Group in Hobart. Complementary acoustic and biological data were also collected by the vessels FV Aoraki and FV Petersen during the same season.

Use Cases

• Correlate acoustic backscatter features with biological data like species, length, weight, and sex from AMFA observer logs.
• Analyze trawl shot locations and catch data from AFMA trawl logs against acoustic signal patterns.
• Study temporal patterns in acoustic data linked to GPS coordinates embedded in the ES60 .raw files.
• Compare acoustic history files across the three vessels (Ocean Dawn, Aoraki, Petersen) for the 2002 season.

Strengths

• Data collected as part of a structured FRDC project involving three factory freezer vessels.
• Complementary biological and trawl log data available through AFMA for cross-referencing.

Limitations

• Dataset is limited to ES60 history files; no cruise track or digitized echogram data is available.
• The provided cruise dates are only for the held data subset; the full voyage start/end dates are unknown.
• Sample size, row count, and specific file formats are not documented.

Provenance

Source

CSIRO Marine Science Acoustic Group (Hobart), via the Australian Ocean Data Network.

Collection Method

Acoustic data collected with a Simrad ES60 echosounder during commercial fishing operations.

Time Range

2002 fishing season (specific subset of voyage dates).

Freshness

Data is from 2002, but the record was last updated in April 2026.

Geography

Tasmanian west coast, Australia.