1.
Phys Rev Lett
; 94(9): 095004, 2005 Mar 11.
Article
in English
| MEDLINE
| ID: mdl-15783973
ABSTRACT
We report the discovery of radio-wave-induced red emission of OH Meinel rotation-vibrational bands at 629.79 nm. These are the first measurements of artificial aurora below 100 km. We believe that the 629.79-nm OH emission was due to radio-wave focusing by sporadic ionization clouds near 80-85 km altitude, thus giving a technique to visualize the low-altitude sporadic ionization and providing insight into ionospheric interactions at these low altitudes.