HR: 1340h
AN: G43A-0912    [Abstracts]
TI: Response of TEC to solar flare: latitude and longitude features
AU: * Krankowski, A
EM: kand@uwm.edu.pl
AF: University of Warmia and Mazury in Olsztyn, Oczapowski St1, Olsztyn, 10-957, Poland
AU: Shagimuratov, I
EM: pcizmiran@gazinter.net
AF: WD IZMIRAN, Prospekt Pabedy 41, Kaliningrad, 236017, Russian Federation
AU: Rothkaehl, H
EM: hrot@cbk.waw.pl
AF: Space Research Centre PAS, Bartycka 18A, Warsaw, 00-716, Poland
AU: Krypiak-Gregorczyk, A
EM: kand@uwm.edu.pl
AF: University of Warmia and Mazury in Olsztyn, Oczapowski St1, Olsztyn, 10-957, Poland
AU: Zakharenkova, I
EM: pcizmiran@gazinter.net
AF: WD IZMIRAN, Prospekt Pabedy 41, Kaliningrad, 236017, Russian Federation
AU: Tepenitzyna, N
EM: pcizmiran@gazinter.net
AF: WD IZMIRAN, Prospekt Pabedy 41, Kaliningrad, 236017, Russian Federation
AB: The analysis of occurrence of ionospheric electron content to the large solar flare that occurred near 11 00 UT on November 28, 2003 (class X17) is presented. The TEC data were obtained using GPS observations carried by European Permanent Network (EPN) and International GNSS Service (IGS). The detail pictures of TEC response to the solar flare over Europe were obtained on the base of GPS measurements of EPN. Spatial and temporal changes of TEC during solar flare we examine using TEC maps. During creating TEC maps over Europe we used simultaneous measurements from 120-160 GPS stations. Time resolution of these maps were 5 min. TEC measurements along individual satellite passes were used to find out the effect of the solar flare in Antarctic and Arctic ionosphere. The changes of TEC value is dominate by the changes in F2 region as the lower part of ionosphere can also contribute for TEC changes . So for better understanding the plasma properties at the top side ionosphere the wave and particle in situ measurements were analysed. Sudden increases of TEC started about 11.00 UT over whole European region. TEC increased ranged from 8 to 20 TECU on time interval 10 min. The percentage TEC enhancement was about 10-30. The recovery stage lasted more than 2-3 hour. The larger enhancement took place at lower latitudes. At high latitudes the TEC enhancement didn't exceed 5 TECU. It was found out that TEC response to the solar flare has a complicated character depending on latitude, longitude and solar zenith angle. Features of TEC response occurrence at high and middle latitudes are discussed in this report.
DE: 1220 Atmosphere monitoring with geodetic techniques (6952)
DE: 1240 Satellite geodesy: results (6929, 7215, 7230, 7240)
DE: 2437 Ionospheric dynamics
DE: 2439 Ionospheric irregularities
DE: 2441 Ionospheric storms (7949)
SC: Geodesy [G]
MN: 2007 Fall Meeting