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Accession Number ADA569091
Title Physics of the Geospace Response to Powerful HF Radio Waves.
Publication Date Oct 2012
Media Count 5p
Personal Author E. Mishin
Abstract This report describes the results of studies of the response of the Earth's space plasma to high-power HF radio waves from the High-frequency Active Auroral Research Program (HAARP) facility in Alaska under the 2010-2012 AFOSR task 'Physics of the Geospace Response to Powerful HF Radio Waves'. A first-principle model of a HF-created ionizing wave has been developed, quantitatively explaining the observed artificial plasma layers. The FLIP model has been adapted to the conditions of HF heating and explored to simulate artificial ducts. DMSP-HAARP experiments revealed that HF-created ion outflows and artificial density ducts in the topside ionosphere appeared faster than predicted by the models, pointing to kinetic (suprathermal) effects. CHAMP/GRACE-HAARP experiments presented the first evidence of F2-region atmospheric gravity waves generated by HF heating. A novel 3D numerical model of nonlinear interactions of lower hybrid waves with plasma particles has been explored. The resulting spectral energy distribution virtually reproduced the satellite observations.
Keywords Earth atmosphere
Gravity waves
Heating
High frequency
High power
Ionosphere
Plasmas(Physics)
Radio waves
Space sciences
Spectral energy distribution
Three dimensional

 
Source Agency Non Paid ADAS
NTIS Subject Category 46H - Radiofrequency Waves
54A - Astrogeology
Corporate Author Air Force Research Lab., Kirtland AFB, NM. Space Vehicles Directorate.
Document Type Technical report
Title Note Final rept. 1 Oct 2009-30 Sep 2012.
NTIS Issue Number 1313
Contract Number N/A

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