Computer Science – Sound
Scientific paper
Dec 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010agufmsa43b1763k&link_type=abstract
American Geophysical Union, Fall Meeting 2010, abstract #SA43B-1763
Computer Science
Sound
[2435] Ionosphere / Ionospheric Disturbances, [2439] Ionosphere / Ionospheric Irregularities, [2441] Ionosphere / Ionospheric Storms, [7949] Space Weather / Ionospheric Storms
Scientific paper
In this report we present an analysis of the ionospheric response to moderate (Dst<70 nT), 11 October 2008, geomagnetic storm. TEC maps over European region were created on the base of GPS observations provided by IGS/EPN. Strong short-term positive effect was detected near noon of 11 October 2008. The TEC enhancement exceeded 100% on latitudes of 65-35N and was decreased to lower latitudes. The positive effect was associated with large scale traveling disturbance. During storm there was observed the increase and modification of horizontal gradients structure and ionospheric trough had moved to equator, until 57-58 geomagnetic latitudes. The electron density profiles, retrieved from the Formosat-3/COSMIC radio occultation measurements and also measurements from European ionospheric sounding stations (DIAS), were analyzed within the case-study to estimate the altitudinal modification of the ionosphere. The considerable enhancement of the peak electron density was observed in European region during 11-15 UT, it reached the factor of 2.8 in comparison with quiet conditions. The height of the ionospheric F2 layer was risen by 60 km. For graphical demonstration of the observed ionospheric effects global electron density maps were calculated on the base of globally distributed COSMIC RO profiles. Electron density maps for different altitude slices were analyzed. This positive effect was revealed distinctly in RO electron density profiles and products based on these data - ionospheric electron content and global maps of electron density.
Krankowski Andrzej
Krypiak-Gregorczyk A.
Shagimuratov I. I.
Zakharenkova I.
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