AGSO Marine Seismic and Navigation Data Format Standards

A format description for digital seismic and navigation data from the Australian Geological Survey Organisation (AGSO). The description details trace header standards, variations for unstacked data, and optional entries like SHOT and SPN numbers. It notes a change in shot point numbering conventions after 1993 and includes corrections for bathymetry and geophysical data.

Use Cases

• Interpret legacy marine seismic survey data based on described trace header formats.
• Reconcile shot point numbers (SPN vs. SHOT) in data released before and after 1993.
• Apply navigation corrections to source and receiver positions based on the described midpoint convention.
• Process integrated datasets containing seismic, bathymetry, magnetics, and gravity data.

Strengths

• Format description references a published geophysics standard from 1975.
• Explicitly documents a key change in shot point numbering conventions from 1993.
• Describes conventions for data polarity and navigation point corrections.

Limitations

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

Provenance

Source

Geoscience Australia Data

Collection Method

Likely compiled from AGSO (now Geoscience Australia) internal standards and processing software conventions.

Time Range

Covers data released prior to and after 1993.

Freshness

Last updated 2026-04-30 14:36:39.076068; freshness should be verified.

Geography

Marine regions surveyed by AGSO, likely focusing on Australian waters.