Observations from Millstone Hill during the geomagnetic disturbances of March and April 1990

Details Observations from Millstone Hill during the geomagnetic disturbances of March and April 1990 Observations from Millstone Hill during the geomagnetic disturbances of March and April 1990

Feb 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992jgr....97.1225b&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 97, Feb. 1, 1992, p. 1225-1243.

Physics

62

Earth Ionosphere, Geomagnetism, Incoherent Scatter Radar, Magnetic Disturbances, Magnetic Storms, Magnetoplasmadynamics, North America, Radar Measurement

Scientific paper

The capabilities of the Millstone Hill incoherent scatter radars to observe the spatial and temporal structure of the ionospheric densities and temperatures, as well as to infer the dynamics of the ionosphere and thermosphere over a large portion of eastern North America are demonstrated. The effects on the upper atmosphere of major geomagnetic storms which occurred during March and April 1990 are surveyed, and detailed maps of the interrelated parameters which characterize the midlatitude ionosphere are presented. During major storms deep nighttime electron density troughs above and equatorward of Millstone Hill were observed. Neutral meridional winds above Millstone are determined from the radar measurements using the method of Salah and Holt (1974) and the servo model method. The results compare reasonably well with Fabry-Perot measurements taken on six of the nights.

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