Coordinated ground-based and geosynchronous satellite-based measurements of auroral pulsations

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We describe a technique that uses a ground-based all-sky video camera and geosynchronous satellite-based plasma and energetic particle detectors to study ionosphere-magnetosphere coupling as it relates to the aurora. The video camera system was deployed in Eagle, Alaska for a seven month period at the foot of the magnetic field line that threads geosynchronous satellite 1989-046. Since 1989-046 corotates with the earth, its footprint remains nearly fixed in the vicinity of Eagle, allowing for routine continuous monitoring of an auroral field line at its intersections with the ground and with geosynchronous orbit. As an example of the utility of this ... continued below

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Suszcynsky, David M.; Borovsky, Joseph E.; Thomsen, Michelle F.; McComas, David J. & Belian, Richard D. September 1, 1996.

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Description

We describe a technique that uses a ground-based all-sky video camera and geosynchronous satellite-based plasma and energetic particle detectors to study ionosphere-magnetosphere coupling as it relates to the aurora. The video camera system was deployed in Eagle, Alaska for a seven month period at the foot of the magnetic field line that threads geosynchronous satellite 1989-046. Since 1989-046 corotates with the earth, its footprint remains nearly fixed in the vicinity of Eagle, allowing for routine continuous monitoring of an auroral field line at its intersections with the ground and with geosynchronous orbit. As an example of the utility of this technique, we present coordinated ground-based and satellite based observations during periods of auroral pulsations and compare this data to the predictions of both the relaxation oscillator theory and flow cyclotron maser theory for the generation of pulsating aurorae. The observed plasma and energetic particle characteristics at geosynchronous orbit during pulsating aurorae displays are found to be in agreement with the predictions of both theories lending further support that a cyclotron resonance mechanism is responsible for auroral pulsations.

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OSTI as DE00770929

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  • 23rd European Conference on Optical Methods in the Atmosphere, Kiev (UA), 09/02/1996--09/06/1996

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  • Report No.: LA-UR-96-3531
  • Report No.: CONF-9609292--1
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 770929
  • Archival Resource Key: ark:/67531/metadc723763

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  • September 1, 1996

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  • Sept. 29, 2015, 5:31 a.m.

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  • March 29, 2016, 4:22 p.m.

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Suszcynsky, David M.; Borovsky, Joseph E.; Thomsen, Michelle F.; McComas, David J. & Belian, Richard D. Coordinated ground-based and geosynchronous satellite-based measurements of auroral pulsations, article, September 1, 1996; New Mexico. (digital.library.unt.edu/ark:/67531/metadc723763/: accessed December 12, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.