Auroral Small-scale Structure Observed with ASK and EISCAT Svalbard Radar
Abstract
We report on ground-based optical studies of the fine structure of the aurora, conducted with a set of optical instruments and the EISCAT Svalbard radar. The optical instruments include ASK (Auroral Structure and Kinetics), and SIF (Spectrographic Imaging Facility). ASK is a high resolution multispectral imager with passband filters that isolates the O+ (7320 Å) emission, and the line of atomic oxygen at 7774 Å. SIF consists of one HiTIES spectrograph with a mosaic filter designed to study the same spectral features as ASK, and one ICCD imager with a cut-off filter blocking emissions with a wavelength shorter than 6450 Å. We compare the ionospheric ionisation as observed by ESR, and observed emission brightnesses, using electron transport and ion chemistry model.
- Publication:
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AGU Fall Meeting Abstracts
- Pub Date:
- December 2006
- Bibcode:
- 2006AGUFMSM31B0316D
- Keywords:
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- 0310 Airglow and aurora;
- 0394 Instruments and techniques;
- 2407 Auroral ionosphere (2704);
- 2704 Auroral phenomena (2407)