MARSIS: Mars Express Subsurface and Ionosphere Sounding Telemetry

MARSIS instrument telemetry from the Mars Express orbiter, processed to remove duplicate and corrupted data packets. The dataset includes both subsurface and ionosphere sounding observations, with computed geometric information for spatial and temporal location. It is provided by the National Aeronautics and Space Administration and was last updated in March 2026.

Use Cases

• Analyze Martian subsurface structure based on radar sounding data.
• Study the Martian ionosphere's properties based on ionosphere sounding data.
• Map geological features using the geometric location information computed for each observation.
• Validate and calibrate radar instrument models using the processed scientific telemetry.

Strengths

• Data has been edited for duplicated and corrupted packets, indicating a level of quality control.
• Includes both subsurface and ionosphere data, providing a dual scientific focus.
• Contains computed geometric information to locate observations in space and time.

Limitations

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

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Scientific telemetry produced by the MARSIS instrument on the Mars Express orbiter, processed on ground.

Time Range

null

Freshness

Last updated 2026-03-13 18:15:18.904290; freshness should be verified.

Geography

Mars