Geophysical Survey of the Scotia Plate, Antarctica (1989-1991)

Two Antarctic summer campaigns from 1989 to 1991 collected 5,410 kilometers of reflection seismic, magnetic, and gravity data across the Scotia Plate and surrounding regions. The Osservatorio Geofisico Sperimentale conducted this research using the vessel OGS-Explora under Italy's National Research Program in Antarctica. Parameters for both campaigns included a 3,000-meter streamer, 14-second record length, and consistent air-gun specifications.

Use Cases

• Modeling crustal thickness and structure based on reflection seismic profiles.
• Mapping magnetic anomalies to understand subsurface geological features.
• Analyzing gravity data to infer density variations and tectonic boundaries.
• Studying plate tectonics and basin evolution in the Scotia Plate region.

Strengths

• Contains 5,410 kilometers of combined geophysical data from two dedicated campaigns.
• Specifies detailed acquisition parameters, including 3,000% coverage and a 4 ms sample rate.
• Data collection was coordinated by a national research program (PNRA) with USGS cooperation.

Limitations

• Last updated 1991-03 30; freshness should be verified.
• Column-level documentation is absent; field semantics must be inferred after download.
• Row count and file formats are unknown, which may limit suitability assessment.

Provenance

Source

Osservatorio Geofisico Sperimentale, under the Italian National Research Program in Antarctica (PNRA).

Collection Method

Marine geophysical survey using the Research Vessel OGS-Explora, equipped with seismic, gravimetric, and magnetometer sensors.

Time Range

Antarctic summers 1989-1990 and 1990-1991.

Freshness

Last updated 1991-03-30 23:59:59.999000

Geography

Ross Sea, Scotia Plate, Antarctic Peninsula, and South Pacific Ocean.