Long-Term Observation of the Quasi-3-Hour Large-Scale Traveling Ionospheric Disturbances by the Oblique-Incidence Ionosonde Network in North China

The oblique-incidence ionosonde network in North China is a very unique system for regional ionospheric observation. It contains 5 transmitters and 20 receivers, and it has 99 ionospheric observation points between 22.40° N and 33.19° N geomagnetic latitudes. The data of the ionosonde network were used to investigate the statistical characteristics of the quasi-3-h large-scale traveling ionospheric disturbances (LSTIDs). From September 2009 to August 2011, 157 cases of the quiet-time LSTIDs were recorded; 110 cases traveled southward, 46 cases traveled southwestward and only 1 case traveled southeastward. The LSTIDs mainly appeared between 10:00 and 19:00 LT in the months from September to the following May. We compared the data of the Beijing, Mohe and Yakutsk digisondes and found that the LSTIDs are most likely to come from the northern auroral region. These LSTIDs may be induced by the atmospheric gravity waves (AGWs) and presented obvious seasonal and diurnal varying features, indicating that the thermospheric wind field has played an important role.

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Studying large-scale traveling ionospheric disturbances according to the data of oblique-incidence sounding

Geomagnetism and Aeronomy ◽

10.1134/s0016793211080196 ◽

2011 ◽

Vol 51 (8) ◽

pp. 1101-1104 ◽

Cited By ~ 3

Author(s):

V. A. Ivanova ◽

V. I. Kurkin ◽

N. M. Polekh ◽

L. V. Chistyakova ◽

I. G. Brynko ◽

...

Keyword(s):

Oblique Incidence ◽

Large Scale ◽

Ionospheric Disturbances ◽

Traveling Ionospheric Disturbances

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Large-scale traveling ionospheric disturbances registered using oblique-incidence sounding over north-eastern region of Russian Federation

2017 Progress In Electromagnetics Research Symposium - Spring (PIERS) ◽

10.1109/piers.2017.8261952 ◽

2017 ◽

Author(s):

V. A. Ivanova ◽

V. I. Kurkin ◽

A. V. Podlesnyi ◽

S. N. Ponomarchuk ◽

V. P. Grozov ◽

...

Keyword(s):

Russian Federation ◽

Oblique Incidence ◽

Large Scale ◽

Ionospheric Disturbances ◽

Eastern Region ◽

Traveling Ionospheric Disturbances ◽

North Eastern

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Understanding Inter-Hemispheric Traveling Ionospheric Disturbances and Their Mechanisms

Remote Sensing ◽

10.3390/rs12020228 ◽

2020 ◽

Vol 12 (2) ◽

pp. 228

Author(s):

Olusegun F. Jonah ◽

Shunrong Zhang ◽

Anthea J. Coster ◽

Larisa P. Goncharenko ◽

Philip J. Erickson ◽

...

Keyword(s):

Plasma Density ◽

General Circulation ◽

Large Scale ◽

Circulation Model ◽

Satellite System ◽

Ionospheric Disturbances ◽

Quiet Time ◽

Traveling Ionospheric Disturbances ◽

Generation Mechanisms ◽

Plasma Background

Traveling ionospheric disturbances (TIDs) are wave-like disturbances in ionospheric plasma density. They are often observed during both quiet (medium-scale TID) and geomagnetically disturbed (large-scale TID) conditions. Their amplitudes can reach double-digit percentages of the background plasma density, and their existence presents a challenge for accurate ionosphere specification. In this study, we examine TID properties using observations obtained during two geomagnetically disturbed periods using multiple ground and space-borne instruments, such as magnetometers, Global Navigation Satellite System (GNSS) receivers, and the SWARM satellite. Reference quiet time observations are also provided for both storms. We use a thermosphere–ionosphere–electrodynamics general circulation model (TIEGCM) results to properly interpret TID features and their drivers. This combination of observations and modeling allows the investigation of variations of TID generation mechanisms and subsequent wave propagation, particularly as a function of different plasma background densities during various geophysical conditions. The trans-equatorial coupling of TIDs in the northern and southern hemispheres is also investigated with respect to attenuation and propagation characteristics. We show that TID properties during trans-equatorial events may be substantially affected by storm time background neutral wind perturbation.

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Middle-Scale Ionospheric Disturbances Observed by the Oblique-Incidence Ionosonde Detection Network in North China after the 2011 Tohoku Tsunamigenic Earthquake

Sensors ◽

10.3390/s21031000 ◽

2021 ◽

Vol 21 (3) ◽

pp. 1000

Author(s):

Jin Wang ◽

Gang Chen ◽

Tao Yu ◽

Zhongxin Deng ◽

Xiangxiang Yan ◽

...

Keyword(s):

Gravity Waves ◽

Oblique Incidence ◽

North China ◽

Tohoku Earthquake ◽

Ionospheric Disturbances ◽

Doppler Measurement ◽

The 2011 Tohoku Earthquake ◽

Tsunamigenic Earthquake ◽

The Pacific ◽

The Pacific Ocean

The 2011 Tohoku earthquake and the following enormous tsunami caused great disturbances in the ionosphere that were observed in various regions along the Pacific Ocean. In this study, the oblique-incidence ionosonde detection network located in North China was applied to investigate the inland ionospheric disturbances related to the 2011 tsunamigenic earthquake. The ionosonde network consists of five transmitters and 20 receivers and can monitor regional ionosphere disturbances continuously and effectively. Based on the recorded electron density variations along the horizontal plane, the planar middle-scale ionospheric disturbances (MSTIDs) associated with the 2011 Tohoku tsunamigenic earthquake were detected more than 2000 km west of the epicenter about six hours later. The MSTIDs captured by the Digisonde, high-frequency (HF) Doppler measurement, and Constellation Observing System for Meteorology, Ionosphere, and Climate (COSMIC) satellite provided more information about the far-field inland propagation characteristics of the westward propagating gravity waves. The results imply that the ionosonde network has the potential for remote sensing of ionospheric disturbances induced by tsunamigenic earthquakes and provide a perspective for investigating the propagation process of associated gravity waves.

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