IMP 8: Solar Wind Plasma Measurements at 1-Minute Resolution

IMP 8 MIT Faraday cup experiment data provides definitive interplanetary plasma measurements. The dataset contains fine-resolution solar wind velocity, density, and temperature data at approximately 1-minute intervals, collected by the National Aeronautics and Space Administration. The instrument measures currents from solar wind ions, with data collection affected by a partially faulty memory, which can alter the expected time resolution.

Use Cases

• Modeling solar wind propagation based on velocity and density measurements.
• Analyzing plasma temperature variations in the interplanetary medium.
• Studying the anisotropy of solar wind flow based on angular sector current measurements.
• Investigating instrument operation modes (TMS, AQM) and their impact on data collection.

Strengths

• Provides high-resolution plasma data at approximately 1-minute intervals.
• Measures multiple key solar wind parameters: velocity, density, and temperature.
• Includes angular sector data (32 sectors per spin) for flow direction analysis.

Limitations

• Row count is unknown, which may limit suitability assessment.
• Column-level documentation is absent; field semantics must be inferred after download.
• Instrument has a faulty memory affecting data collection, with only every other TMS spectrum usable.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Measurements from the Faraday cup experiment on the IMP 8 satellite.

Time Range

null

Freshness

Last updated 2026-03-13 06:21:33.956411; freshness should be verified.

Geography

Interplanetary space, solar wind.