The Interplanetary Magnetic Field (IMF) Sector Boundaries 1982–1988 dataset identifies the exact times when the large-scale magnetic polarity of the solar wind reversed. Available through the Wilcox Solar Observatory, this list documents sector boundary crossings using composite polarity distributions and in-situ spacecraft plasma and magnetic field observations.
Composite List: Daily polarity distributions identifying well-defined boundary patterns (such as ++++:---- or ++++---+--) .
Spacecraft List: Specific heliospheric current sheet crossings mapped from actual in-situ field and plasma measurements (Omnitape data).
Version:2.7.2
Version:2.7.2
The Interplanetary Magnetic Field (IMF) Sector Boundaries 1982–1988 dataset identifies the exact times when the large-scale magnetic polarity of the solar wind reversed. Available through the Wilcox Solar Observatory, this list documents sector boundary crossings using composite polarity distributions and in-situ spacecraft plasma and magnetic field observations.
Composite List: Daily polarity distributions identifying well-defined boundary patterns (such as ++++:---- or ++++---+--) .
Spacecraft List: Specific heliospheric current sheet crossings mapped from actual in-situ field and plasma measurements (Omnitape data).
| Role | Person | StartDate | StopDate | Note | |
|---|---|---|---|---|---|
| 1. | Author | spase://SMWG/Person/Xuepu.Zhao | |||
| 2. | MetadataContact | spase://SMWG/Person/Olga.Y.Uritskaya |
The composite polarity (the computed daily polarity plus the inferred daily polarity replacing the missising data) daily polarity distributions by using a modified definition of the "well-defined" sector boundary. Here "+" refers to a UT day of outward polarity; "-" to a day of inward polarity and ":" to a day of mixed polarity.