TY - JOUR
T1 - Earthquake induced dynamics at the ionosphere in presence of magnetic storm
AU - Devi, Minakshi
AU - Barbara, A. K.
AU - Oyama, Ko Ichiro
AU - Chen, Chia Hung
PY - 2014/2/15
Y1 - 2014/2/15
N2 - The modifications induced in the dynamics of the ionosphere by the major Japan earthquake (EQ) of March 11, 2011 (epicenter at 38.322° N, 142.369° E, M = 8.9) in presence of a magnetic storm are examined by mapping latitudinal variations of F-layer ionization density (NmF2) from 22 stations covering the epicenter zone. The changes forced into the Total Electron Content (TEC) by the major EQ in the magnetic storm ambiance are also examined from the GPS data collected at Guwahati (26° 10′ N, 91° 45' E), situated in the major fault system of East Asia. The contributions of pre-seismic electric field as well as of magnetic storm time electric field in the observed density variations are brought into the ambit of discussion. The influence of lower atmosphere in shaping TEC features during the study case is highlighted. The effects of solar activity on density variations during such complex ambiances are also addressed.
AB - The modifications induced in the dynamics of the ionosphere by the major Japan earthquake (EQ) of March 11, 2011 (epicenter at 38.322° N, 142.369° E, M = 8.9) in presence of a magnetic storm are examined by mapping latitudinal variations of F-layer ionization density (NmF2) from 22 stations covering the epicenter zone. The changes forced into the Total Electron Content (TEC) by the major EQ in the magnetic storm ambiance are also examined from the GPS data collected at Guwahati (26° 10′ N, 91° 45' E), situated in the major fault system of East Asia. The contributions of pre-seismic electric field as well as of magnetic storm time electric field in the observed density variations are brought into the ambit of discussion. The influence of lower atmosphere in shaping TEC features during the study case is highlighted. The effects of solar activity on density variations during such complex ambiances are also addressed.
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U2 - 10.1016/j.asr.2013.11.054
DO - 10.1016/j.asr.2013.11.054
M3 - Article
AN - SCOPUS:84894907292
SN - 0273-1177
VL - 53
SP - 609
EP - 618
JO - Advances in Space Research
JF - Advances in Space Research
IS - 4
ER -