RV Investigator Voyage IN2026_V01: Gravity Data from Antarctic COOKIES Expedition

53 raw gravity data files totalling 863 MB were collected aboard the RV Investigator during the COOKIES voyage from January 02 to February 25, 2026. The data were recorded using a MicroG Lacoste Air-Sea II gravity meter and are stored in .ENV and .DAT formats at CSIRO. No processing has been conducted on this dataset, and further details are contained in a separate GSM data acquisition and processing report.

Use Cases

• Modeling Earth's gravity field based on raw gravity meter readings.
• Analyzing seafloor bathymetry and geological structures based on gravity anomalies.
• Calibrating or validating satellite-derived gravity data based on shipborne measurements.
• Studying temporal variations in gravity during the specific voyage period.

Strengths

• Data volume is precisely quantified at 863 MB across 53 files.
• Instrumentation is specified as a MicroG Lacoste Air-Sea II gravity meter.
• The temporal coverage is explicitly defined as January 02 to February 25, 2026.
• The voyage track is known, departing from and returning to Hobart.

Limitations

• No processing has been conducted on this dataset, requiring user expertise for analysis.
• Column-level documentation is absent; field semantics must be inferred after download.
• The dataset's row count is unknown, which may limit suitability assessment.

Provenance

Source

Australian Ocean Data Network via data_gov_au.

Collection Method

Collected via a shipborne MicroG Lacoste Air-Sea II gravity meter during RV Investigator voyage IN2026_V01.

Time Range

January 02, 2026 to February 25, 2026 (AEST).

Freshness

Last updated 2026-06-27 15:55:58.303617; freshness should be verified.

Geography

Voyage track for the 'Cook Ice Ecosystems and Sediments (COOKIES)' expedition, departing from and returning to Hobart, Tasmania, likely operating in Antarctic waters.