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Effects of interplanetary magnetic field azimuth on auroral zone and polar cap magnetic activity
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Burch, J. L. |
| Copyright Year | 1972 |
| Description | During relatively quiet times in the period 1964-1968, AE is found to be greater when the interplanetary magnetic field (b sub IMF) is directed toward the sun in Jan., Feb., and Apr., and when B sub IMF is directed away from the sun in Oct. to Dec. Using Murmansk hourly H values and the AE components, AU and AL, it is shown that this sector dependence is present only in the negative H deviations. This observation supports the idea that negative bay magnitudes are determined chiefly by particle-produced ionization, while positive bay magnitudes are rather insensitive to increases in particle precipitation. The ratio of DP2-type magnetic activity in the southern polar cap to that in the northern polar cap is found to be greater by a factor of about 1.75 for B sub IMF toward the sun. |
| File Size | 1160384 |
| Page Count | 30 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19720015727 |
| Archival Resource Key | ark:/13960/t7zm03s43 |
| Language | English |
| Publisher Date | 1972-04-01 |
| Access Restriction | Open |
| Subject Keyword | Geophysics Magnetic Flux Azimuth Auroral Zones Magnetic Variations Auroral Ionization Magnetic Storms Interplanetary Magnetic Fields Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
