Physics of the Geospace Response to Powerful HF Radio Waves
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.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 31, 2012
- Accession Number
- ADA569091
Entities
People
- Evgeny Mishin
Organizations
- Air Force Research Laboratory