HAARP-Induced Artificial Ionospheric Ducts

Details HAARP-Induced Artificial Ionospheric Ducts HAARP-Induced Artificial Ionospheric Ducts

Dec 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008agufmsa43b1586m&link_type=abstract

American Geophysical Union, Fall Meeting 2008, abstract #SA43B-1586

Physics

2403 Active Experiments, 2437 Ionospheric Dynamics, 2439 Ionospheric Irregularities, 2471 Plasma Waves And Instabilities (2772), 2487 Wave Propagation (0689, 3285, 4275, 4455, 6934)

Scientific paper

It is well known that strong electron heating by a powerful HF-facility can lead to electron and ion density perturbations stretching along the geomagnetic field. These density perturbations can serve as ducts for ELF waves, both of natural and artificial origin. This paper presents the experimental evidence of plasma modifications associated with ion outflows due to HF heating. The experiments were conducted using the HAARP heater and two diagnostics satellites, DEMETER and DMSP-16, flying at altitudes 700-800 km close to the magnetic zenith of HAARP. Onboard detectors provided in situ measurements of the ion temperature and composition. The experimental verification of strong ion outflows and formation of the ionospheric ducts by F-region ionospheric heating is presented. Generation of the ionospheric ducts requires strong F-region heating, which is optimum in quiet ionosphere with a distinct smooth F2 region and minimal D/E region absorption. The ion outflows and density structures are best detected by satellites passing within less than a hundred kilometers to the HAARP magnetic field line. The experimental results are in qualitative agreement with the existing numerical model of inter-hemispheric artificial ducts.

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