Abstract
Auroral Current and Electrodynamics Structure (ACES) Observations of Ionospheric Feedback in the Alfven Resonator
2011 Fall American Geophysical Union (San Francisco, CA)
12/05/2011
Abstract
In 2009, the Auroral Current and Electrodynamics Structure (ACES) High and Low sounding rockets were launched from the Poker Flat Rocket Range (PFRR) in Alaska, with the science objective of gathering in-situ data to quantify current closure in a discrete auroral arc. As ACES High crossed through the return current of an arc (that was monitored using an all sky camera from the ground at Fort Yukon), its instruments recorded clear Alfv nic signatures both poleward and equatorward of the return current region, but not within the main region of the return current itself. These data provide an excellent opportunity to study ionospheric feedback and how it interacts with the Alfv n resonator. We compare the observations with predictions and new results from a model of ionospheric feedback in the ionospheric Alfv n resonator (IAR) and report the significance and impact of these new data for the Magnetosphere-Ionosphere Coupling in the Alfv n Resonator (MICA) rocket mission to launch from PFRR this winter. MICA s primary science objectives specifically focus on better understanding the small-scale structure that the model predicts should exist within the return current region.
Details
- Title: Subtitle
- Auroral Current and Electrodynamics Structure (ACES) Observations of Ionospheric Feedback in the Alfven Resonator
- Creators
- Ian J. CohenMarc LessardEric J. LundScott R. BoundsCraig KletzingStephen R. KaepplerKristine M. SigsbeeAnatoly V. StreltsovJames W. LabelleMicah P. DombrowskiRobert F. PfaffDoug RowlandSarah Jones - Goddard Space Flight CenterBrian Jay AndersonCraig J. HeinselmanJesper W. GjerloevThierry Dudok de Wit
- Resource Type
- Abstract
- Conference
- 2011 Fall American Geophysical Union (San Francisco, CA)
- Language
- English
- Date published
- 12/05/2011
- Description audience
- PUBLIC
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984442012102771
Metrics
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