scholarly journals Observations of traveling ionospheric disturbances and 3-m scale irregularities in the nighttime F-region ionosphere with the MU radar and a GPS network

2002 ◽  
Vol 54 (1) ◽  
pp. 31-44 ◽  
Author(s):  
A. Saito ◽  
M. Nishimura ◽  
M. Yamamoto ◽  
S. Fukao ◽  
T. Tsugawa ◽  
...  
2007 ◽  
Vol 25 (10) ◽  
pp. 2185-2194 ◽  
Author(s):  
S. Saito ◽  
M. Yamamoto ◽  
H. Hashiguchi ◽  
A. Maegawa ◽  
A. Saito

Abstract. We have found that quasi-periodic (QP) echoes in the E region were well defined when medium scale traveling ionospheric disturbances (MSTIDs) in the F region were present. The appearance and disappearance of the MSTIDs observed with the dense GPS receiver network are well correlated with the development and decay of QP echoes observed with the Middle-and-Upper atmosphere (MU) radar. Interferometric imaging of the QP echoes obtained using the MU radar shows that bands of echoing regions aligned northwest to southeast drift southwestward, and their wavefront and propagation direction are the same as those of MSTIDs. This result confirms the expectation of Hysell et al. (2002) who observed band structures in QP echoes by using the MU radar and suggested their relation to MSTIDs. We found observational evidence that the midlatitude E- and F regions are coupled through the geomagnetic field line, although we could not clearly ascertain which of the two regions is the source.


2011 ◽  
Vol 116 (A9) ◽  
pp. n/a-n/a ◽  
Author(s):  
Feng Ding ◽  
Weixing Wan ◽  
Guirong Xu ◽  
Tao Yu ◽  
Guanglin Yang ◽  
...  

2013 ◽  
Vol 51 (6) ◽  
pp. 1001-1007 ◽  
Author(s):  
Zhiguo Deng ◽  
Steffen Schön ◽  
Hongping Zhang ◽  
Michael Bender ◽  
Jens Wickert

2011 ◽  
Vol 54 (2) ◽  
pp. 162-168 ◽  
Author(s):  
Qian SONG ◽  
Feng DING ◽  
Wei-Xing WAN ◽  
Li-Bo LIU ◽  
Bai-Qi NING

2016 ◽  
Vol 34 (11) ◽  
pp. 1045-1051 ◽  
Author(s):  
Feng Ding ◽  
Tian Mao ◽  
Lianhuan Hu ◽  
Baiqi Ning ◽  
Weixing Wan ◽  
...  

Abstract. We use the Global Positioning System (GPS) network in northwest China and central Asia to monitor traveling ionospheric disturbances (TIDs), which were possibly excited by the large meteorite blast over Chelyabinsk, Russia, on 15 February 2013. Two TIDs were observed. The first TID was observed 13 min after the blast within a range of 270–600 km from the blast site. It propagated radially from the blast site with a mean velocity and period of 369 m s−1 and 12 min, respectively. The second TID was found in northwest China, 1.5 h after the time of the blast, at  ∼  2500–3100 km from the blast site. This latter TID propagated southeastward with a velocity and period of 410 m s−1 and 23 min, respectively. Severe dissipation of the perturbation total electronic content (TEC) amplitude was observed. Any TIDs propagating in a global range was not found after the meteorite blast. Features of TIDs were compared with those excited by early nuclear explosion tests. It is inferred from our analysis that the energy release of the Chelyabinsk meteorite blast may not be large enough to excite such ionospheric disturbances in a global range as some nuclear explosions did.


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