Structure of the polar electrojet antenna

Details Structure of the polar electrojet antenna Structure of the polar electrojet antenna

Dec 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003phdt........10r&link_type=abstract

Thesis (PhD). MASSACHUSETTS INSTITUTE OF TECHNOLOGY, Source DAI-B 64/06, p. 2730, Dec 2003, pages.

Physics

Scientific paper

Field experiments were performed in Gakona, Alaska in August and November 2002. The ionospheric conductivity was periodically perturbed using amplitude-modulated radiation from the HAARP HF transmitter (1 MW power, 14 dB gain, 3.3 5.8 MHz carrier, 0.1 40 kHz modulation). The conductivity perturbations lead to perturbations to the natural flow of electrojet current in the lower ionosphere, resulting in ELF/VLF radiation at the modulation frequency. Measurements of the radiation, along with analytic and numerical models, suggest that a vertical loop with a scale size of 10 km is the dominant current structure excited during the experiments. (Copies available exclusively from MIT Libraries, Rm. 14-0551, Cambridge, MA 02139-4307. Ph. 617-253-5668; Fax 617-253-1690.)

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