JARE Cruise Shirase: Antarctic Sea Surface Gravity Anomaly Data

Antarctic sea surface gravity anomaly data were acquired using a NIPR-ORI gravimeter during the JARE cruise of the Shirase vessel. The data were processed at the Ocean Research Institute and reduced to free-air gravity anomalies in the extended MGD77 format. Data tapes were submitted to JODC, JHD, and NGDC NOAA.

Use Cases

• Modeling regional gravity fields based on free-air gravity anomaly data.
• Calibrating satellite altimeter data based on surface gravity measurements.
• Studying Antarctic geophysical structures based on ship-acquired gravity data.
• Integrating gravity data into geodetic models based on the MGD77 format.

Strengths

• Data processed by the Ocean Research Institute.
• Data formatted according to the extended MGD77 standard.
• Data distributed by authoritative centers (JODC, JHD, NGDC NOAA).

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Last update date is unknown; freshness unverified.

Provenance

Source

SCIOPS

Collection Method

Acquired using a NIPR-ORI gravimeter during the JARE cruise of Shirase.

Geography

Antarctica