Waterhole auroral arc modification experiments Electrodynamic response

Details Waterhole auroral arc modification experiments Electrodynamic response Waterhole auroral arc modification experiments Electrodynamic response

Sep 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985jgr....90.8377w&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 90, Sept. 1, 1985, p. 8377-8386.

Mathematics

Logic

9

Auroral Arcs, Electrodynamics, F Region, Water Vapor, Electric Fields, Energy Spectra, Ion Temperature, Ionospheric Electron Density, Magnetic Signatures, Remote Sensing

Scientific paper

The Waterhole series of experiments, which tested current theories of the electrodynamic structure of auroral arcs, is discussed. In these experiments, the current-carrying capability of the ionospheric plasma was modified by the explosive release of a large number of reactive molecules in the ionospheric F region, with the net effect of reducing the local plasma density over spatial scales comparable to the auroral forms. The response of the aurora to this perturbation was monitored directly by plasma diagnostic instruments on the rocket carrying the explosive release and indirectly from the ground by various photometric and imaging devices. Model predictions of the perturbation induced by the two releases are summarized, and the rocket-borne and ground-based instrumentation is described. Results from both flights are summarized, and a theoretical model is presented which relates the differences in observed response to the topological relationship between the releases and the auroral form.

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