A case study of the reaction of the auroral atmosphere to local energy inputs

Details A case study of the reaction of the auroral atmosphere to local energy inputs A case study of the reaction of the auroral atmosphere to local energy inputs

Apr 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993jatp...55..615r&link_type=abstract

Journal of Atmospheric and Terrestrial Physics (ISSN 0021-9169), vol. 55, no. 4-5, p. 615-622.

Physics

1

Atmospheric Chemistry, Auroral Zones, Eiscat Radar System (Europe), Geomagnetism, Atmospheric Circulation, Lines Of Force, Vertical Distribution

Scientific paper

EISCAT data taken along the Tromso geomagnetic field line, on 25 March 1986, 1800-2400 UT, have been used to study the reaction of the neutral atmosphere to temporal and localized energy inputs. A periodic variation of the electron temperature with a period of about 25 min following a temporal heating event is interpreted as being due to a corresponding oscillation of the neutral atmosphere. A model to simulate the dynamic behavior of the atmosphere is briefly described. The observations can well be explained provided the energy deposition is localized. Then horizontal gradients and thus horizontal atmospheric motions are established and these also affect the amplitude and period of vertical motions.

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