NASA's THEMIS mission employs five spacecraft and ground observatories to study substorms in Earth's magnetosphere. The dataset contains Level 1 and 2 data from instruments on these probes launched in 2007. It is managed by the Space Sciences Laboratory at the University of California, Berkeley.
Use Cases
- Analyze magnetic field measurements from spacecraft to identify current disruption onset.
- Correlate plasma acceleration data from outer probes at 20 and 30 Earth radii with ground-based auroral observations.
- Map phenomena between inner spacecraft at ~10 Earth radii and ground arrays using magnetic field line data.
- Determine the timing and location of substorm beginnings by combining spacecraft and ground observatory data.
- Distinguish between near-Earth current disruption and distant magnetotail reconnection models using multi-point observations.
Strengths
- Data from five identically-instrumented spacecraft provides multi-point measurements.
- Observations are coordinated with a dedicated array of ground observatories.
- Mission has been operational since its launch in February 2007.
Limitations
- Specific row counts, column details, and file formats are unknown.
- Data coverage is geographically biased towards the northern hemisphere (Canada and northern United States).
- The temporal coverage and update frequency for this specific data product are unspecified.
Provenance
- Source
- NASA THEMIS Mission, Space Sciences Laboratory, University of California, Berkeley.
- Collection Method
- Data collected by instruments on five spacecraft and a ground-based observatory array.
- Time Range
- Mission launched February 17, 2007; specific data time range unknown.
- Freshness
- null
- Geography
- Spacecraft orbits cover regions around Earth, ground observatories in Canada and northern United States.