Influence of a tropical cyclone on the upper ionosphere according to tomography sounding data over Sakhalin Island in November 2007

Vanina-Dart, L. B.; Romanov, A. A.; Шарков, Е. А.

doi:10.1134/s001679321106017x

Cited by 18 publications

(4 citation statements)

References 5 publications

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“…Also, the strong convective cells of a TC zone produce a wide spectrum of gravity waves (GWs) at tropospheric altitude which can propagate up to the F region. TC‐inspired GWs can propagate upward to the ionospheric height as well as horizontal distances of hundreds and thousands of kilometers [ Mao et al , ; Perevalova and Ishin , ; Vanina‐dart et al , ] and manifest themselves as traveling ionospheric disturbances (TIDs). HF Doppler radar observations confirm that TCs inspire some mesoscale TID [ Tsutsui and Ogawa , ] and could affect the ionosphere [ Xiao et al , ].…”

Section: Introductionmentioning

confidence: 99%

Tropical cyclone effects on the equatorial ionosphere: First result from the Indian sector

et al. 2016

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Ionospheric response to the effects of tropical cyclone (TC) “Mahasen” in 2013 and Hudhud in 2014 is studied on the equatorial ionosphere over the Indian sector for the first time using Global Positioning System‐derived total electron content (TEC) data. We observed an anomalous decrease of 3.8 TEC unit (1 TECU = 1016 el m−2) in vertical TEC (VTEC) value from the monthly mean for TC Mahasen and 2.1 TECU for TC Hudhud on the day of the landfall. We have also observed similar VTEC depletion of 1.5, 1.9, and 2.1 TECU for three different receivers on the landfall day for TC Vongfong over Japan. This anomalous decrease is observed over a wide zone around the trajectory of the cyclone during the active cyclonic storm stage. This observed anomaly might be the result of combined effect of TC‐inspired gravity waves, ejection of neutral particles from the terminator of a TC, and lightning electric fields which redistribute the chemical constituents of the ionosphere by increasing the number of neutral particles at different ionospheric heights, thus decreasing the TEC over the satellite‐receiver path.

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Section: Introductionmentioning

confidence: 99%

Tropical cyclone effects on the equatorial ionosphere: First result from the Indian sector

et al. 2016

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“…They found that the evolution of TEC variations had the same tendency as the typhoon-induced foF2. A change in foF2 parameters in connection with TC activity was analysed based on the latitude in Vanina-Dart et al (2011). It was then shown that the character of ionospheric variations depended on the stage and spatio-temporal state of TC and on the distance between the TC centre and point of the ionosphere measurements.…”

Section: Introductionmentioning

confidence: 99%

Meteorological effects in the lower ionosphere as based on VLF/LF signal observations

Рожной

Solovieva

Левин

et al. 2014

Nat. Hazards Earth Syst. Sci.

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Abstract. Very low and low frequency (VLF/LF) data recorded in the FarN) are investigated to study the meteorological effects in the lower ionosphere. The results demonstrate the sensitivity of the VLF/LF signals to the variations of atmospheric pressure, humidity, wind velocity and temperature, and the VLF/LF record at the station of Yuzhno-Kurilsk is found to be most sensitive to those variations of atmospheric parameters. The region under consideration is characterized by high winter cyclonic activity in mid-latitudes and strong summer and autumn typhoon activity in low latitudes. VLF/LF signal variations during eight tropical cyclones (TCs) with different intensity are considered. Negative nighttime anomalies in the signal amplitude that are most probably caused by TC activity are found for six events. Those anomalies are observed during 1-2 days when TCs move inside the sensitivity zones of the subionospheric paths. Perturbations of the VLF signal observed during two TCs can be caused by both the TC influence and seismic activity, but no correlation between TC intensity and magnitude of the signal anomalies is found. Spectral analysis of the typhoon-induced disturbed signals revealed the fluctuations with time periods in the range of 7-16 and 15-55 min that corresponds to the range of internal gravity waves periods.

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“…Whereas in another case the TEC tends to decrease while the tropical storm reaches the land and begins the trend of decreasing and then reverses when the storm effect gets reduced (18,19) . There is a possible change in the ionospheric parameter of foF2 of 10-20% over the tropical cyclone zone at a distance from 3800 to 5500 km (20) . In the present study, for the first time, the ionospheric parameters are studied in the Equatorial region of Indian sector on the effect of Tropical Cyclone OCKHI during the period of November and December 2017.…”

Section: Introductionmentioning

confidence: 99%

An Investigation of Response of the Tropical Cyclone Ockhi in the Equatorial Ionosphere over the Indian region

Emperumal¹,

Sathishkumar²,

Srinivas³

et al. 2021

IJST

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Influence of a tropical cyclone on the upper ionosphere according to tomography sounding data over Sakhalin Island in November 2007

Cited by 18 publications

References 5 publications

Tropical cyclone effects on the equatorial ionosphere: First result from the Indian sector

Tropical cyclone effects on the equatorial ionosphere: First result from the Indian sector

Meteorological effects in the lower ionosphere as based on VLF/LF signal observations

An Investigation of Response of the Tropical Cyclone Ockhi in the Equatorial Ionosphere over the Indian region

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