Characteristics of the Ionospheric Disturbances Caused by Typhoon Using GPS and Ionospheric Sounding

Xu, Jiujing; Ke, Fuyang; Zhao, Xin; Qi, Xiaoman

doi:10.1007/978-981-15-6113-9_57

Cited by 3 publications

(2 citation statements)

References 15 publications

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“…The violent convective movement and moisture of typhoon will force the stratopause to rise. Under the influence of the mesosphere, the updraft develops further and lifts the turbopause, finally bringing neutral molecules into the ionosphere and affecting its structure (Y. M. Liu et al., 2006; Xu et al., 2020). The critical change of meridional wind happened on the same day of maximum ionospheric variations.…”

Section: Introductionmentioning

confidence: 99%

Statistical Relationship of Ionospheric Disturbances Caused by Typhoon Extinction on the Sea

Du,

Zhou,

et al. 2023

JGR Space Physics

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Based on the data of magnetic field and electronic density of SWARM, and Total Electron Content, this paper screened six typhoons that died out on the sea. We studied how typhoons affected the ionosphere when they died out without the influence of topography and other factors. The statistical results show that during the extinction of typhoons, the magnetic disturbances all appeared, and the electron density disturbances were observed in five typhoons. The frequency of the electronic density disturbance is slightly higher than the magnetic disturbance. The range of the electronic density disturbance is mostly five or six hundred kilometers and relatively concentrated. The range of the magnetic disturbance can reach about two thousand kilometers and is relatively scattered. Our results indicate that the extinction of typhoon may affect the ionosphere through acoustic gravity waves (AGWs). The AGWs is not generated by friction, but may be from the typhoon itself or a new phenomenon when the typhoon dies out.

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Section: Introductionmentioning

confidence: 99%

Statistical Relationship of Ionospheric Disturbances Caused by Typhoon Extinction on the Sea

Du,

Zhou,

et al. 2023

JGR Space Physics

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“…In addition, other "internal" causes have recently shown that they can impact the ionosphere too. There are studies relating severe atmospheric phenomena such as cyclones or hurricanes to ionospheric anomalies Ke et al (2019); Xu et al (2019); Kamogawa (2006). Anomalous variations in the Total Electron Content (TEC) and peaks in the ionospheric scintillation have been detected during the passage of a large cyclone or hurricane, which creates gravity waves that couple to the lower ionosphere, yielding to ionospheric disturbances.…”

Section: Introductionmentioning

confidence: 99%

The 2021 volcanic eruption in La Palma Island and its impact on ionospheric scintillation as measured from GNSS reference stations, GNSS-R, and GNSS-RO

Molina

Semlali

Park

et al. 2022

Preprint

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Abstract. Ionospheric disturbances induced by seismic activity have been studied in the last years by many authors, showing an impact both before and after the occurrence of earthquakes. In this study, the ionospheric scintillation produced by the 2021 La Palma volcano eruption is analyzed. The "Cumbre Vieja" volcano was active from September 19th to December 13th, 2021, and many magnitude 3–4 earthquakes were recorded, with some of them reaching magnitude 5. In this study the three methods: GNSS reference monitoring, GNSS Reflectometry (GNSS-R) from NASA CYGNSS, and GNSS Radio Occultation (GNSS-RO) from COSMIC and Spire constellations, are used, allowing us to compare and evaluate their performance in the same conditions. To compare the seismic activity with ionospheric scintillation, earthquakes’ generated energy, and percentile 95 % of the intensity scintillation parameter (S4), measurements have been computed every 6 h intervals for the whole duration of the volcanic eruption. GNSS-RO has shown the best correlation between earthquakes’ energy and S4, with values up to 0.09 when the perturbations occur around 18 h after the seismic activity. GNSS reference monitoring stations data also shows some correlation 18 h after and 7–8 days after. As expected, GNSS-R is the one that shows the smallest correlation, as the ionospheric signatures get masked by the signature of the surface where the reflection is taking place. Additionally, as expected as well, the three methods show a smaller correlation during the week before earthquakes.

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The 2021 La Palma volcanic eruption and its impact on ionospheric scintillation as measured from GNSS reference stations, GNSS-R and GNSS-RO

Molina,

Boudriki Semlali,

González-Casado

et al. 2023

Nat. Hazards Earth Syst. Sci.

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Abstract. Ionospheric disturbances induced by seismic activity have been studied in recent years by many authors, showing an impact both before and after the occurrence of earthquakes. In this study, the ionospheric scintillation produced by the 2021 La Palma volcano eruption is analyzed. The Cumbre Vieja volcano was active from 19 September to 13 December 2021, and many earthquakes of magnitude 3–4 were recorded, with some of them reaching magnitude 5. Three methods, GNSS reference monitoring, GNSS reflectometry (GNSS-R) from NASA CYGNSS, and GNSS radio occultation (GNSS-RO) from COSMIC and Spire constellations, are used to compare and evaluate their sensitivity as proxies of earthquakes associated with the volcanic eruption. To compare the seismic activity with ionospheric scintillation, seismic energy release, and 95th percentile of the intensity scintillation parameter (S4), measurements have been computed at 6 h intervals for the whole duration of the volcanic eruption. GNSS-RO has shown the best correlation between earthquake energy and S4, with values up to 0.09 when the perturbations occur around 18 h after the seismic activity. GNSS reference monitoring station data also show some correlation 18 h and 7–8 d after. As expected, GNSS-R is the one that shows the smallest correlation, as the ionospheric signatures get masked by the signature of the surface where the reflection is taking place. Additionally, the three methods show a smaller correlation during the week before earthquakes. Given the small magnitude of the seismic activity, the correlation is barely detectable in this situation, and thus would be difficult to use in any application to find earthquake proxies.

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Characteristics of the Ionospheric Disturbances Caused by Typhoon Using GPS and Ionospheric Sounding

Cited by 3 publications

References 15 publications

Statistical Relationship of Ionospheric Disturbances Caused by Typhoon Extinction on the Sea

Statistical Relationship of Ionospheric Disturbances Caused by Typhoon Extinction on the Sea

The 2021 volcanic eruption in La Palma Island and its impact on ionospheric scintillation as measured from GNSS reference stations, GNSS-R, and GNSS-RO

The 2021 La Palma volcanic eruption and its impact on ionospheric scintillation as measured from GNSS reference stations, GNSS-R and GNSS-RO

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