Heating at 430-MHz in the lower ionosphere at Arecibo

Journal Article · Wed Sep 01 04:00:00 EDT 1982 · J. Geophys. Res.; (United States)

DOI:https://doi.org/10.1029/JA087iA09p07551· OSTI ID:6573958

Coco, D; Ganguly, S

The 430-MHz radar ar Arecibo has been used both to produce and to measure electron temperature increases in the lower ionosphere. The 430-MHz transmitter produced heating pulses from 0.2 to 6.0 ms in length having a maximum power flux of 12 W/m/sup 2/ at 100 km. For the first time, both the spectrum and the total power of the incoherent scatter signals wee used to measure the electron temperature increases in the 65 to 110-km altitude region. When the measured electron temperature increases are compared to the results of an ohmic heating model, measured increases are found to be significantly smaller than the predicted increases. Possible explanations for this lack of agreement, such as a non-Maxwellian electron temperature distribution or increased electron cooling rates, are discussed.

• Research Organization: Space Physics and Astronomy Department, Rice University, Houston, Texas 77001
• OSTI ID: 6573958
• Journal Information: J. Geophys. Res.; (United States), Journal Name: J. Geophys. Res.; (United States) Vol. 87:A9; ISSN JGREA
• Country of Publication: United States
• Language: English

Related Subjects

640201* -- Atmospheric Physics-- Auroral
Ionospheric
& Magetospheric Phenomena
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
D REGION
E REGION
EARTH ATMOSPHERE
ELECTROMAGNETIC RADIATION
ELECTRON TEMPERATURE
FEDERAL REGION II
GREATER ANTILLES
HEATING
IONOSPHERE
ISLANDS
MEASURING INSTRUMENTS
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RADAR
RADIATIONS
RADIOWAVE RADIATION
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