On the nature of traveling ionospheric disturbances launched by low-altitude nuclear explosions

1974 ◽  
pp. 330-344
Author(s):  
C. O. Hines
Keyword(s):  
Ionospheric Disturbances ◽  
Traveling Ionospheric Disturbances ◽  
Nuclear Explosions ◽  
Low Altitude

scholarly journals GPS network observation of traveling ionospheric disturbances following the Chelyabinsk meteorite blast

2016 ◽  
Vol 34 (11) ◽  
pp. 1045-1051 ◽  
Author(s):  
Feng Ding ◽  
Tian Mao ◽  
Lianhuan Hu ◽  
Baiqi Ning ◽  
Weixing Wan ◽  
...  
Keyword(s):  
Northwest China ◽  
Ionospheric Disturbances ◽  
Mean Velocity ◽  
Chelyabinsk Meteorite ◽  
Traveling Ionospheric Disturbances ◽  
Nuclear Explosions ◽  
Gps Network ◽  
Network Observation ◽  
Total Electronic Content ◽  
Electronic Content

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.

GPS Discrimination of Traveling Ionospheric Disturbances from Underground Nuclear Explosions and Earthquakes

Navigation ◽  
2014 ◽  
Vol 61 (2) ◽  
pp. 125-134 ◽  
Author(s):  
Jihye Park ◽  
Dorota A. Grejner-Brzezinska ◽  
Ralph R. B. von Frese ◽  
Yu Jade Morton
Keyword(s):  
Ionospheric Disturbances ◽  
Underground Nuclear Explosions ◽  
Traveling Ionospheric Disturbances ◽  
Nuclear Explosions

scholarly journals Statistical study of medium-scale traveling ionospheric disturbances in low-latitude ionosphere using an automatic algorithm

2021 ◽  
Vol 73 (1) ◽  
Author(s):  
Pin-Hsuan Cheng ◽  
Charles Lin ◽  
Yuichi Otsuka ◽  
Hanli Liu ◽  
Panthalingal Krishanunni Rajesh ◽  
...  
Keyword(s):  
Climate Model ◽  
Geomagnetic Latitude ◽  
Detection Algorithm ◽  
Support Vector ◽  
Electron Content ◽  
Ionospheric Disturbances ◽  
Low Latitude ◽  
Total Electron ◽  
Medium Scale ◽  
Traveling Ionospheric Disturbances

AbstractThis study investigates the medium-scale traveling ionospheric disturbances (MSTIDs) statistically at the low-latitude equatorial ionization anomaly (EIA) region in the northern hemisphere. We apply the automatic detection algorithm including the three-dimensional fast Fourier transform (3-D FFT) and support vector machine (SVM) on total electron content (TEC) observations, derived from a network of ground-based global navigation satellite system (GNSS) receivers in Taiwan (14.5° N geomagnetic latitude; 32.5° inclination), to identify MSTID from other waves or irregularity features. The obtained results are analyzed statistically to examine the behavior of low-latitude MSTIDs. Statistical results indicate the following characteristics. First, the southward (equatorward) MSTIDs are observed almost every day during 0800–2100 LT in Spring and Winter. At midnight, southward MSTIDs are more discernible in Summer and majority of them are propagating from Japan to Taiwan. Second, northward (poleward) MSTIDs are more frequently detected during 1200–2100 LT in Spring and Summer with the secondary peak of occurrence between day of year (DOY) 100–140 during 0000–0300 LT. The characteristics of the MSTIDs are interpreted with additional observations from radio occultation (RO) soundings of FORMOSAT-3/COSMIC as well as modeled atmospheric waves from the high-resolution Whole Atmosphere Community Climate Model (WACCM) suggesting that the nighttime MSTIDs in Summer is likely connected to the atmospheric gravity waves (AGWs).

scholarly journals Direct Observations of Traveling Ionospheric Disturbances as Focusers of Solar Radiation: Spectral Caustics

2019 ◽  
Vol 877 (2) ◽  
pp. 98
Author(s):  
Artem Koval ◽  
Yao Chen ◽  
Takuya Tsugawa ◽  
Yuichi Otsuka ◽  
Atsuki Shinbori ◽  
...  
Keyword(s):  
Solar Radiation ◽  
Ionospheric Disturbances ◽  
Traveling Ionospheric Disturbances ◽  
Direct Observations

Analysis of traveling ionospheric disturbances (TIDs) in GPS TEC launched by the 2011 Tohoku earthquake

Radio Science ◽  
2016 ◽  
Vol 51 (5) ◽  
pp. 507-514 ◽  
Author(s):  
Geoff Crowley ◽  
Irfan Azeem ◽  
Adam Reynolds ◽  
Timothy M. Duly ◽  
Patrick McBride ◽  
...  
Keyword(s):  
Tohoku Earthquake ◽  
2011 Tohoku Earthquake ◽  
Ionospheric Disturbances ◽  
The 2011 Tohoku Earthquake ◽  
Gps Tec ◽  
Traveling Ionospheric Disturbances
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