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dc.contributor.advisor Cloutier, Paul A.
dc.creatorCasserly, Raymond Thomas
dc.date.accessioned 2018-12-18T21:25:43Z
dc.date.available 2018-12-18T21:25:43Z
dc.date.issued 1974
dc.identifier.urihttps://hdl.handle.net/1911/104570
dc.description.abstract A rocket-borne experiment to study the currents associated with an auroral arc was conducted at Poker Flat, Alaska at 2122 LT on 24 February 1972. A vector magnetometer measured the magnetic field as the payload passed over an auroral band structure which had a visual intensity of > 4 kR. Changes in the magnitude and direction of the magnetic field along the trajectory were used to infer the configuration of a system of field-aligned (Birkeland) currents and auroral electrojets. The model current system consists of a pair of oppositely directed parallel sheet currents along the arc having current densities of ~27 MA/m and a north-south extent of approximately 9 km. Movement of the current sheets in range and azimuth prior to apogee is interpreted as being due to the presence of a large fold in the arc at that time. Two eastward electrojets each having a current magnitude of 3 to 4 x 1 amps are also inferred. One electrojet is located approximately in the center of the downward current sheet while the other is located just north of the upward current. Data from the onboard particle detectors showed that the net field-aligned current carried by precipitating electrons in the energy range .5-2 kev was ~5 MA/m in the northernmost sheet. However, there were no measured particles in that energy range that contributed to the downward sheet current inferred from the magnetometer data.
dc.format.extent 119 pp
dc.language.iso eng
dc.title Rocket-based vector magnetic measurement of an auroral birkeland current configuration
dc.identifier.digital RICE2205
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. 1974 Casserly
dc.identifier.citation Casserly, Raymond Thomas. "Rocket-based vector magnetic measurement of an auroral birkeland current configuration." (1974) Master’s Thesis, Rice University. https://hdl.handle.net/1911/104570.


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