Observations of ULF waves on the ground and ionospheric Doppler shifts during storm sudden commencement

2016 ◽  
Vol 121 (4) ◽  
pp. 2976-2983 ◽  
Author(s):  
Xinyan Ouyang ◽  
Wenlong Liu ◽  
Zuo Xiao ◽  
Yongqiang Hao
Keyword(s):  
Sudden Commencement ◽  
Ulf Waves ◽  
Doppler Shifts ◽  
Storm Sudden Commencement

scholarly journals Global MHD test particle simulations of >10 MeV radiation belt electrons during storm sudden commencement

2007 ◽  
Vol 112 (A9) ◽  
pp. n/a-n/a ◽  
Author(s):  
B. T. Kress ◽  
M. K. Hudson ◽  
M. D. Looper ◽  
J. Albert ◽  
J. G. Lyon ◽  
...  
Keyword(s):  
Test Particle ◽  
Radiation Belt ◽  
Sudden Commencement ◽  
Storm Sudden Commencement ◽  
Particle Simulations ◽  
Radiation Belt Electrons

Study on Ionospheric TEC Effect during the Magnetic Storm on August 5th,2011

2014 ◽  
Vol 577 ◽  
pp. 1193-1197
Author(s):  
Shu Hui Li ◽  
Jun Huan Peng ◽  
Shu Qing Wang ◽  
Yun Peng
Keyword(s):  
Magnetic Storm ◽  
Local Time ◽  
High Latitude ◽  
Reference Value ◽  
Sudden Commencement ◽  
Spatial Gradient ◽  
Low Latitude ◽  
Maximum Increase ◽  
Storm Sudden Commencement ◽  
Gps Station

Using GPS observations, this article studied the global TEC’s effect and its variation characters during the magnetic storm on August 5th, 2011. Results show that after sudden commencement and deep main phase of the magnetic storm, there are strong positive ionospheric TEC disturbances in the area along middle and low latitude with local time of 12:00 at noon. Besides, compared with TEC reference value, the maximum increase values are respectively 21.26 TECU and 25.29 TECU. TEC’s abnormal decline appeared in some area of high latitude at mid night on the northern semi-sphere. The analysis results reflect that the ionospheric disturbances are dependent on the local time. Moreover, observations on the BRMU GPS station show that the rate of TEC (ROT) rose and fell quickly, and its standard deviation ROTI index increased from less than 0.5 TECU/min to lager than 1.5 TECU/min, which meant that TEC temporal and spatial gradient had become larger and larger during the storm. The global ROTI map reflects the strong irregularity of the ionosphere density structure in the high-latitude area with higher time resolution in case of storm sudden commencement, and the maximum value rose up to 6 TECU/min. Then, the ionospheric irregularity appeared in wide area of the globe after noon.

scholarly journals On latitudinal profile of Storm Sudden Commencement in H, Y and Z at Indian Geomagnetic Observatory chain

2001 ◽  
Vol 53 (2) ◽  
pp. 121-127 ◽  
Author(s):  
R. G. Rastogi ◽  
B. M. Pathan ◽  
D. R. K. Rao ◽  
T. S. Sastry ◽  
J. H. Sastri
Keyword(s):  
Sudden Commencement ◽  
Geomagnetic Observatory ◽  
Storm Sudden Commencement ◽  
Latitudinal Profile
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