AGSO Formats for Marine Seismic and Navigation Digital Data

AGSO marine seismic data formats adhere to standards from Barry et al. (1975). The description details header mnemonics, trace header variations for unstacked data, and the transition from pseudo shot point numbers (SPN) to processing shot numbers (SHOT) after 1993. Some data sets may include bathymetry, magnetics, and gravity data.

Use Cases

• Standardizing seismic data processing workflows based on the described trace header formats.
• Relating vintage pre-1993 data to original field data using the SPN and SHOT conventions.
• Correcting navigation data to the mid-point of source and first active channel.
• Maintaining field data polarity conventions for compression wave plotting.
• Integrating auxiliary bathymetry and geophysical data corrected to mid-point locations.

Strengths

• Format description references a specific published standard (Barry et al., Geophysics, 1975).
• Clarifies a historical data convention change (SPN to SHOT) with a specific cutoff year (1993).
• Describes specific optional entries like SHOT or SPN and their practical use.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Last updated 2026-05-05 05:13:20.763345; freshness should be verified.

Provenance

Source

Australian Ocean Data Network

Time Range

Data released prior to and after 1993.

Geography

Marine surveys, likely Australian region.