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dc.contributor.advisor Wolf, Richard A.
dc.creatorLin, Chong'an
dc.date.accessioned 2016-04-22T22:00:57Z
dc.date.available 2016-04-22T22:00:57Z
dc.date.issued 1972
dc.identifier.citation Lin, Chong'an. "Analysis of the sudden commencement of February 15, 1967." (1972) Master’s Thesis, Rice University. https://hdl.handle.net/1911/90358.
dc.identifier.urihttps://hdl.handle.net/1911/90358
dc.description.abstract A sudden commencement occurred at. 2348 UT on February 15, 1967 when the ATS-1 satellite was 2 hours past local noon at a geocentric distance of 6.6 Re. Plasma was observed by the Suprathermal ion Detector first to flow in the antisolar direction, as expected, but then to flow westward, for about 2 minutes, at about 50 km/sec. Analysis of ground magnetograms suggests that the surprising westward flow at 6.6 R resulted the ionosphere's reaction to the sudden commencement. Beginning about 2 minutes before the start of westward flow at ATS-1,ground magnetometers near the foot of the ATS-1 field line recorded average magnetic-field deflections of about 100Y ,to the northeast. For an assumed height-integrated Hall conductivity of 1 mho, and a standoff distance of 7.2 R derived from Explorer 33 plasma data, the ground magnetic variations imply an electric field that agrees in magnitude and direction with that required to produce the observed flow at ATS-1.
dc.format.extent 67 pp
dc.language.iso eng
dc.title Analysis of the sudden commencement of February 15, 1967
dc.identifier.digital RICE1395
dc.type.genre Thesis
dc.type.material Text
thesis.degree.department Space Physics and Astronomy
thesis.degree.discipline Natural Sciences
thesis.degree.grantor Rice University
thesis.degree.level Masters
thesis.degree.name Master of Science
dc.format.digitalOrigin reformatted digital
dc.identifier.callno Thesis SP.SCI. 1972 Lin


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