Earth's magnetic field perturbations as the possible environmental impact of the conceptualized solar power satellite

Details Earth's magnetic field perturbations as the possible environmental impact of the conceptualized solar power satellite Earth's magnetic field perturbations as the possible environmental impact of the conceptualized solar power satellite

Dec 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984jgr....8911043l&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 89, Dec. 1, 1984, p. 11043-11047.

Physics

Magnetic Disturbances, Microwave Transmission, Satellite Power Transmission, Solar Power Satellites, Ionospheric Electron Density, Ionospheric Heating, Radiation Effects

Scientific paper

It is predicted that the earth's magnetic field can be significantly perturbed locally by a microwave beam transmitted from the conceptualized solar power satellite (SPS) at a frequency of 2.45 GHz with incident power density of 230 W/per sq m at the center of the beam. The simultaneous excitation of earth's magnetic field fluctuations and ionospheric density irregularities is caused by the thermal filamentation instability of microwaves with scale lengths greater than a few hundred meters. Earth's magnetic field perturbations with magnitudes (a few tens of gammas) comparable to those in magnetospheric substorms can be expected. Particle precipitation and airglow enhancement are the possible, concomitant ionospheric effects associated with the microwave-induced geomagnetic field fluctuations. The present work adds earth's magnetic field perturbations as an additional effect to those such as ionospheric density irregularities, plasma heating, etc., that should be assessed as the possible environmental impacts of the conceptualized solar power satellite proram.

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