Ionospheric effects of the Kamchatka meteoroid: Results from multipath oblique sounding

Luo, Y.; Черногор, Л. Ф.; Гармаш, К. П.; Guo, Qiang; Rozumenko, V. T.; Shulga, S. N.; Zheng, Yu

doi:10.1016/j.jastp.2020.105336

Cited by 24 publications

(7 citation statements)

References 11 publications

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“…In particular nuclear tests have been known to cause ionospheric disturbances (e.g., Breitling and Kupferman, 1967;Hines, 1967;Kanellakos, 1967;Albee and Kanellakos, 1968;Park et al, 2013;Zhang and Tang, 2015). Other large explosive events, whether anthropogenic, such as conventional explosions (Barry et al, 1966;Fitzgerald and Carlos, 1997;Drobzheva and Krasnov, 2006) and rocket launches (Chou et al, 2018), or natural, such as superbolide meteor impacts (Pradipta et al, 2015;Luo et al, 2020), can also produce medium scale TIDs (MSTIDs). Some historic events, such as the industrial accident in Flixborough in 1974 (Jones and Spracklen, 1974;Krasnov et al, 2003) and conventional bombing campaign during World War II (Scott and Major, 2018) have recently been reanalysed in this perspective.…”

Section: Introductionmentioning

confidence: 99%

Multi-instrument detection in Europe of ionospheric disturbances caused by the 15 January 2022 eruption of the Hunga volcano

Verhulst¹,

Altadill²,

Barta³

et al. 2022

J. Space Weather Space Clim.

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The 15 January 2022 eruption of the Hunga volcano provides a unique opportunity to study the reaction of the ionosphere to large explosive events. In particular, this event allows us to study the global propagation of travelling ionospheric disturbances using various instruments. We focus on the detection of the ionospheric disturbances caused by this eruption over Europe, where dense networks of both ionosondes and GNSS receivers are available. This event took place on the day of a geomagnetic storm. We show how data from different instruments and from different observatories can be combined to clearly distinguish the TIDs produced by the eruption from those caused by concurrent geomagnetic activity. The Lamb wave front was detected as the strongest disturbance in the ionosphere, travelling at between 300 and 340 m/s, consistent with the disturbances in the lower atmosphere. By comparing observations obtained from multiple types of instruments, we also show that TIDs produced by various mechanisms are present simultaneously, with different types of waves affecting different physical quantities. This illustrates the importance of analysing data from multiple independent instruments in order to obtain a full picture of an event like this one, as relying on only a single data source might result in some effects going unobserved.

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Section: Introductionmentioning

confidence: 99%

Multi-instrument detection in Europe of ionospheric disturbances caused by the 15 January 2022 eruption of the Hunga volcano

Verhulst¹,

Altadill²,

Barta³

et al. 2022

J. Space Weather Space Clim.

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“…A multifrequency multiple path software-defined radio system for sounding the ionosphere at oblique incidence is located at the Harbin Engineering University campus (45.78°N, 126.68°E), PRC (Chernogor et al, 2020;Guo et al, 2019aGuo et al, , 2019bGuo et al, , 2019cGuo et al, , 2020Luo et al, 2020). The system monitors the state of the ionosphere over 14 radio-wave propagation paths continuously.…”

Section: Observational Instrumentation and Techniquementioning

confidence: 99%

Disturbances in the Ionosphere and Distortion of Radio Wave Characteristics That Accompanied the Super Typhoon Lekima Event of 4–12 August 2019

et al. 2022

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We acquired measurements of four observable parameters of refracted signals received from the ionosphere (Doppler shift, Doppler spectrum, number of rays, and signal amplitude) with the oblique HF Doppler technique in the city of Harbin during the super typhoon Lekima event of 4–12 August 2019. The ionospheric response was observed by the Harbin Engineering University multifrequency multiple path coherent radio system in the People's Republic of China. The maximum distortion of radio‐wave characteristics and ionospheric disturbances were observed to occur during the day when the super typhoon Lekima energy gained a maximum value and when the super typhoon approached close to the ionospheric part of the radio‐wave propagation paths. The magnitude of the ionospheric disturbances decreased with the distance between the super typhoon and propagation path midpoints. Both aperiodic (chaotic) and quasi‐sinusoidal disturbances were observed to accompany the action of the super typhoon in the ionosphere. The action of the typhoon was often accompanied by up to ±1.5 Hz broadening of the Doppler spectra, 10–30 dBV variations in the signal amplitude, and quasi‐sinusoidal variations in the Doppler shift with 0.10‐ to 0.40‐Hz amplitudes and periods of 20–30 to 70–80 min. The quasi‐sinusoidal variations in the signal amplitude with a ∼24‐min period, T, are due to focusing and defocusing of rays by wavelike disturbances in the electron density. The periods of the quasi‐sinusoidal disturbances were observed to be ∼12–24 min. Such periods pertain to atmospheric gravity waves. The atmospheric gravity waves generated by the super typhoon gave rise to quasi‐sinusoidal variations in the electron density with relative amplitudes of ∼3%–∼19%.

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“…The state of the ionosphere was monitored by the ionosonde nearest to Harbin, i.e., the WK546 URSI code ionosonde located in the city of Wakkanai (45.16N, 141.75E) in Japan (Guo et al, 2019a(Guo et al, , 2019bChernogor et al, 2020;Luo et al, 2020).…”

Section: Analysis Of the State Of The Ionospherementioning

confidence: 99%

“…The study of the effects from the Super Typhoon was conducted using the Harbin Engineering University multifrequency multiple path coherent software defined radio system for probing the ionosphere at oblique incidence (Guo et al, 2019a(Guo et al, , 2019bChernogor et al, 2020;Luo et al, 2020). The system utilizes radio transmissions of broadcasting stations located in the PRC, the Republic of Korea, Japan, the Russian Federation, and Mongolia, the signals of which are received and processed at the Harbin Engineering University campus (45.78N, 126.68E).…”

Section: Instrumentation and Techniquesmentioning

confidence: 99%

“…Continuous monitoring of the dynamic processes operating in the ionosphere is done along 14 propagation paths in the 5 -10 MHz band (Table 3, Figure 5) as described by Guo et al (2019aGuo et al ( , 2019b, Chernogor et al (2020), andLuo et al (2020). In the event under study, post-analysis of the data acquired along six propagation paths has shown they are not suitable for processing.…”

Section: Instrumentation and Techniquesmentioning

confidence: 99%

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Ionospheric Effects over the People’s Republic of China from the Super-Powerful Tropospheric Western Pacific Phenomenon of September–October 2018: Results from Oblique Sounding

Чорногор

Гармаш

Qiang

et al. 2022

Preprint

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Abstract. The paper deals with the effects that accompanied the Super Typhoon Kong-Rey action in the ionosphere over the People’s Republic of China (PRC). The observations were made using the Harbin Engineering University, PRC, multifrequency multiple path coherent software defined radio system. The typhoon began on September 29, 2018 and ceased to exist on October 6, 2018. The ionospheric response to the super typhoon action was clearly observed to occur both on October 1–2, 2018 (when the typhoon was 2,800–3,300 km from the propagation path midpoints and its energy gained a maximum value) and on October 5–6, 2018 when the typhoon was 1,000–1,500 km from the midpoints and its energy decreased by a factor of about 4. The ionospheric effects are more pronounced along the nearest propagation paths, whereas no effect was detected along the propagation path at the farthest distance from the typhoon. The super typhoon action on the ionosphere was accompanied by the generation or amplification of quasi-periodic variations in the Doppler shift by a factor of 2–3, as well as by noticeable variations in the signal amplitude. The Doppler spectra were observed to broaden in a number of cases. The period of wave perturbations exhibited variability in the ~20 min to ~120 min range, which suggests that the perturbations in the ionospheric electron density were caused by atmospheric gravity waves (AGWs) generated by the typhoon; in addition, the greater the AGW period, the greater the Doppler shift. As the period increased from 20 min to 120 min, the Doppler shift amplitudes increased from ~0.1 Hz to 0.5–1 Hz, whereas the amplitude of quasi-periodic variations in the electron density increased from a few to several tens of per cent within the same range of the AGW periods. The Doppler measurements have shown that the dusk terminator and super typhoon acted synergistically to amplify the ionospheric response to these sources of energy.

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Ionospheric effects of the Kamchatka meteoroid: Results from multipath oblique sounding

Cited by 24 publications

References 11 publications

Multi-instrument detection in Europe of ionospheric disturbances caused by the 15 January 2022 eruption of the Hunga volcano

Multi-instrument detection in Europe of ionospheric disturbances caused by the 15 January 2022 eruption of the Hunga volcano

Disturbances in the Ionosphere and Distortion of Radio Wave Characteristics That Accompanied the Super Typhoon Lekima Event of 4–12 August 2019

Ionospheric Effects over the People’s Republic of China from the Super-Powerful Tropospheric Western Pacific Phenomenon of September–October 2018: Results from Oblique Sounding

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