A Study of the D-Region Ionosphere during the Intense Solar Particle Events of August 1972.
Abstract
During the intense solar particle events of 3-11 August 1972 twenty-eight cases of simultaneous data were obtained between the polar orbiting satellite 1971-089A and the incoherent-scatter radar at Chatanika, Alaska. These data were analyzed to derive effective electron loss rates in the D-region ionosphere as a function of altitude, solar zenith angle and the magnitude of the production rate. Production rate profiles extending from 300 to 30,000 ion-pairs/cc sec were calculated for the 40-90 km region. Electron density profiles extending from 5000 to 100,000 el/cc were measured in the D-region at Chatanika, with useful data being obtained down to altitudes as low as 50 km. Values of electron loss rate were obtained for daytime and sumrise/sunset twilight conditions over a range of solar zenith angles from 50.4 degrees to 98.6 degrees.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1975
- Accession Number
- ADA012499
Entities
People
- J. B. Reagan
Organizations
- Lockheed Martin Missiles and Space