ICECAP '75--Chatanika Radar Results.
Abstract
Results of the Chatanika DNA 617 Radar support coverage of the ICECAP '75 operation are presented, along with magnetometer, riometer, all-sky-camera, and boresite television data gathered to give a more complete picture of ionospheric processes. Eight instrumented rockets were launched during the period 26 February through 12 March 1975 as part of the ICECAP '75 program. Two daytime launches--Astrobee D probes on 26 February and 1 March 1975--took place during periods of relatively quiet geomagnetic activity when peak energy deposition, due to precipitating electrons, was of order 0.1 ergs/sq cm2-s or less. Maximum E-layer electron densities were less than 100,000 cc. A twilight launch on 6 March (at 0343 UT) also occurred during relatively quiet geomagnetic conditions. E-layer electron densities of less than 100,000 cc and electric field strengths of less than 5 mV/m resulted in low rates of joule dissipation and energy deposition. The four evening launches (6, 10, 11, and 12 March) occurred during periods of moderate to high geomagnetic activity. Total energy deposition rates ranged from 2 to as high as 50 ergs/sq cm2-s and were associated with high electron precipitation and electric field strengths. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1976
- Accession Number
- ADA038259
Entities
People
- Paul D. Perreault
- Richard R. Vondrak
- Theodore M. Watt
Organizations
- SRI International