Computer Science – Sound
Scientific paper
Dec 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011agufmsm31b2102o&link_type=abstract
American Geophysical Union, Fall Meeting 2011, abstract #SM31B-2102
Computer Science
Sound
[2435] Ionosphere / Ionospheric Disturbances, [2439] Ionosphere / Ionospheric Irregularities, [2475] Ionosphere / Polar Cap Ionosphere, [2494] Ionosphere / Instruments And Techniques
Scientific paper
In this paper we use in-situ measurements from a sounding rocket to investigate the fine-scale structures in polar cap patches and the growth of F-region plasma irregularities in the cusp ionosphere. The Investigation of Cusp Irregularities (ICI-2) sounding rocket was launched from Ny-Ålesund, Svalbard, on 05 December 2008. The high-resolution rocket data is combined with ground-based data; an all-sky camera, the EISCAT Svalbard Radar, and the SuperDARN Hankasalmi radar. These datasets are used to characterize the spatial structure of the observed F-region irregularities and to derive instability growth rates at various spatial scales. We find the gradient-drift (GD) mechanism to be dominating the production of the observed F-region irregularities. The growth rate of the Kelvin-Helmholtz (KH) mechanism was too slow to explain any of the observed plasma irregularities.
Moen Joran I.
Oksavik Kjellmar
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