Photometric and interferometric observations of the SAR arc event of September 25/26, 1978

Details Photometric and interferometric observations of the SAR arc event of September 25/26, 1978 Photometric and interferometric observations of the SAR arc event of September 25/26, 1978

Aug 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979jgr....84.4441o&link_type=abstract

Journal of Geophysical Research, vol. 84, Aug. 1, 1979, p. 4441-4445. USAF-supported research

Other

Auroral Arcs, Fabry-Perot Interferometers, Magnetic Disturbances, Red Arcs, Spectrophotometry, Emission Spectra, High Resolution, Night Sky, Solar Activity Effects, Solar Cycles

Scientific paper

A distinct stable auroral red arc was observed on the night of September 25/26, 1978, with a multicolor meridian-scanning photometer and a 6-inch high-resolution Fabry-Perot interferometer. The results obtained include the following: (1) the growth rate of intensity of the arc was very rapid, and the time constant measured as 20 min; (2) the average southward drift velocity was rather fast, about 240 km/h or dL/dt of about -0.28 per hour; and (3) the temperatures within the arc showed an increase of about 200 K at around 2.7 hours after the appearance of the arc, while no other enhancement of the temperature was observed during the observation period.

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