scholarly journals Evidence of low-latitude daytime large-scale traveling ionospheric disturbances observed by high-frequency multistatic backscatter sounding system during a geomagnetically quiet period

2012 ◽  
Vol 117 (A6) ◽  
pp. n/a-n/a ◽  
Author(s):  
Chen Zhou ◽  
Zhengyu Zhao ◽  
Guobin Yang ◽  
Gang Chen ◽  
Yaogai Hu ◽  
...  
Keyword(s):  
High Frequency ◽  
Large Scale ◽  
Ionospheric Disturbances ◽  
Quiet Period ◽  
Low Latitude ◽  
Traveling Ionospheric Disturbances

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 Two-dimensional imaging of large-scale traveling ionospheric disturbances over China based on GPS data

2012 ◽  
Vol 117 (A8) ◽  
pp. n/a-n/a ◽  
Author(s):  
Feng Ding ◽  
Weixing Wan ◽  
Baiqi Ning ◽  
Biqiang Zhao ◽  
Qiang Li ◽  
...  
Keyword(s):  
Large Scale ◽  
Gps Data ◽  
Ionospheric Disturbances ◽  
Two Dimensional ◽  
Traveling Ionospheric Disturbances

Features of statistical distributions of large-scale traveling ionospheric disturbances over Almaty

2011 ◽  
Vol 51 (5) ◽  
pp. 640-645 ◽  
Author(s):  
A. F. Yakovets ◽  
V. V. Vodyannikov ◽  
A. B. Andreev ◽  
G. I. Gordienko ◽  
Yu. G. Litvinov
Keyword(s):  
Large Scale ◽  
Ionospheric Disturbances ◽  
Statistical Distributions ◽  
Traveling Ionospheric Disturbances

scholarly journals Identification of Auroral Zone Activity Driving Large‐Scale Traveling Ionospheric Disturbances

2019 ◽  
Vol 124 (1) ◽  
pp. 700-714 ◽  
Author(s):  
L. R. Lyons ◽  
Y. Nishimura ◽  
S.‐R. Zhang ◽  
A. J. Coster ◽  
A. Bhatt ◽  
...  
Keyword(s):  
Large Scale ◽  
Auroral Zone ◽  
Ionospheric Disturbances ◽  
Traveling Ionospheric Disturbances

scholarly journals Simulated high frequency ray paths considering traveling ionospheric disturbances

2020 ◽  
Vol 2 (4) ◽  
Author(s):  
Mariano Fagre ◽  
Bruno S. Zossi ◽  
Jaroslav Chum ◽  
Ana G. Elias
Keyword(s):  
High Frequency ◽  
Ionospheric Disturbances ◽  
Traveling Ionospheric Disturbances ◽  
Ray Paths

Numerical Modeling of the Concentric Gravity Wave Seeding of Low-Latitude Nighttime Medium-Scale Traveling Ionospheric Disturbances

2018 ◽  
Vol 45 (13) ◽  
pp. 6390-6399 ◽  
Author(s):  
Min-Yang Chou ◽  
Charles C. H. Lin ◽  
Joseph D. Huba ◽  
Chuan-Ping Lien ◽  
Chia-Hung Chen ◽  
...  
Keyword(s):  
Numerical Modeling ◽  
Gravity Wave ◽  
Ionospheric Disturbances ◽  
Low Latitude ◽  
Medium Scale ◽  
Traveling Ionospheric Disturbances
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