Pulsating auroral forms and their association with geomagnetic giant pulsations

Details Pulsating auroral forms and their association with geomagnetic giant pulsations Pulsating auroral forms and their association with geomagnetic giant pulsations

Nov 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989p%26ss...37.1477t&link_type=abstract

Planetary and Space Science (ISSN 0032-0633), vol. 37, Nov. 1989, p. 1477-1481, 1483, 1484. Research supported by USAF.

Computer Science

8

Auroral Zones, Charged Particles, Earth Magnetosphere, Geomagnetic Pulsations, Magnetohydrodynamic Waves, Particle Precipitation, All Sky Photography, Life (Durability), Wave Packets

Scientific paper

On the night of October 29/30, 1987, a giant pulsation (Pg) was recorded on the EISCAT magnetometer cross and the U.K. Sub-Auroral Magnetometer Network (SAMNET), accompanied by a variation in auroral luminosity with an identical periodicity of 77 s. Coincident all-sky image data showed that the auroral emissions arose from a series of pulsating patches (which exhibited lifetimes of the order 5-15 s) whose occurrence was modulated with a 77 s periodicity. At several times during this event, a new type of pulsating auroral patch was observed. These data provide a unique example of the auroral precipitation signature during a Pg event.

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