Study of the effect of 17–18 March 2015 geomagnetic storm on the Indian longitudes using GPS and C/NOFS

Ray, S.; Roy, Biswanath; Goswami, Sumanta; Oikonomou, Christina; Haralambous, Haris; Chandel, Babita; Paul, Ashik

doi:10.1002/2016ja023127

Cited by 36 publications

(25 citation statements)

References 37 publications

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“…Patra et al [] ascribed the plasma bubbles and irregularities to the rapid uplift of the ionosphere, which caused strong postsunset scintillations in a very narrow longitudinal zone in India. Ray et al [] showed during the March 2015 storm a significant TEC enhancement during the day and intense phase scintillation at night. Spogli et al [] indicated that PPEF could suppress in a statistical sense the occurrence of equatorial plasma bubbles and scintillation during geomagnetically disturbed days.…”

Section: Main Results: Geospace Responses To the St Patrick's Day Stmentioning

confidence: 99%

Geospace system responses to the St. Patrick's Day storms in 2013 and 2015

Zhang¹,

Zhang

Wang

et al. 2017

JGR Space Physics

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This special collection includes 31 research papers investigating geospace system responses to the geomagnetic storms during the St. Patrick's Days of 17 March 2013 and 2015. It covers observation, data assimilation, and modeling aspects of the storm time phenomena and their associated physical processes. The ionosphere and thermosphere as well as their coupling to the magnetosphere are clearly the main subject areas addressed. This collection provides a comprehensive picture of the geospace response to these two major storms. We provide some highlights of these studies in six specific areas: (1) global and magnetosphere/plasmasphere perspectives, (2) high‐latitude responses, (3) subauroral and midlatitude processes, (4) effects of prompt penetration electric fields and disturbance dynamo electric fields, (5) effects of neutral dynamics and perturbation, and (6) storm effects on plasma bubbles and irregularities. We also discuss areas of future challenges and the ways to move forward in advancing our understanding of the geospace storm time behavior and space weather effects.

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Section: Main Results: Geospace Responses To the St Patrick's Day Stmentioning

confidence: 99%

Geospace system responses to the St. Patrick's Day storms in 2013 and 2015

Zhang¹,

Zhang

Wang

et al. 2017

JGR Space Physics

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“…It should also be noted that the positive storm effect observed for the CME-induced storm on October 13-14 was less significant than that observed during the CIR-induced storm on October 16-17. This is due to the fact that the onset of the storm at 23:00 UT on October 12 was not in the local (LT= UT+05:30) morning to noon sector in which the ionization production mechanism dominates and plasma accumulation due to mechanical effec t of neutral wind is greater than its chemical loss due to recombination (Prolss, 1991;Balan et al, 2010;Ray et al, 2017).…”

Section: Storms Of October 12-20 2016mentioning

confidence: 99%

Effects of CME and CIR induced geomagnetic storms on low-latitude ionization over Indian longitudes in terms of neutral dynamics

Chakraborty

Ray

Datta

et al. 2020

Advances in Space Research

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This paper presents the response of the ionosphere during the intense geomagnetic storms of October 12-20, 2016 and May 26-31, 2017 which occurred during the declining phase of the solar cycle 24. Total Electron Content (TEC) from GPS measured at Indore, Calcutta and Siliguri having geomagnetic dips varying from 32.23°N, 32°N and 39.49°N respectively and at the International GNSS Service (IGS) stations at Lucknow (beyond anomaly crest), Hyderabad (between geomagnetic equator and northern crest of EIA) and Bangalore (near magnetic equator) in the Indian longitude zone have been used for the storms. Prominent peaks in diurnal maximum in excess of 20-45 TECU over the quiet time values were observed during the October 2016 storm at Lucknow, Indore, Hyderabad, Bangalore and 10-20 TECU for the May 2017 storm at Siliguri, Indore, Calcutta and Hyderabad. The GUVI images onboard TIMED spacecraft that measures the thermospheric O/N 2 ratio, showed high values (O/N 2 ratio of about 0.7) on October 16 when positive storm effects were observed compared to the other days during the storm period. The observed features have been explained in terms of the O/N 2 ratio increase in the equatorial thermosphere, CIR-induced High Speed Solar Wind (HSSW) event for the October 2016 storm. The TEC enhancement has also been explained in terms of the Auroral Electrojet (AE), neutral wind values obtained from the Horizontal Wind Model (HWM14) and equatorial electrojet strength from magnetometer data for both October 2016 and May 2017 storms. These results are one of the first to be reported from the Indian longitude sector on influence of CMEand CIR-driven geomagnetic storms on TEC during the declining phase of solar cycle 24.

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“…Global ionospheric effects of the geomagnetic storm on 17 March 2015 have emerged as the most extensively studied magnetic storm effects in recent years (Carter et al, ; Huang et al, ; Jiang et al, ; Kakad et al, ; Kil et al, ; Kuai et al, ; Nava et al, ; Nayak et al, ; Ramsingh et al, ; Ray et al, ; Tulasi Ram et al, ; Zhou et al, ). As has been recorded in several of the above references, and shown here in Figure a, on 17 March 2015, following a sudden storm commencement triggered at about 04:45 UT, the SYM‐H index started decreasing when the z‐component of the interplanetary magnetic field (IMF) turned southward at ~6 UT, indicating the onset of the magnetic storm.…”

Section: Ionosonde and Geomagnetic Observations At Equatorial Stationmentioning

confidence: 99%

Effect of Magnetic Storm Related Thermospheric Changes on the Evolution of Equatorial Plasma Bubbles

et al. 2019

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Past efforts to predict scintillations on VHF and L-band radio signals recorded at equatorial and low-latitude stations have been mostly based on a theoretical linear growth rate of Rayleigh-Taylor instability on the bottomside of the post-sunset equatorial F layer, which is responsible for the generation of an equatorial plasma bubble (EPB). However, it is the maximum height that an EPB reaches above the dip equator and development of intermediate scale irregularities within the EPB, in its nonlinear phase of evolution that determines the latitudinal distribution of scintillations. Amplitude scintillations recorded by a network of VHF and L-band receivers on a quiet day, 13 March 2015 and on 20 March 2015, a few days after the 17 March 2015 magnetic storm, show that latitudinal extent of scintillations caused by EPB irregularities is lesser on 20 March than on 13 March. Geomagnetic and ionosonde data from an equatorial station, and vertical total electron content distributions obtained from Global Navigation Satellite Systems observations, indicate that the equatorial ionospheric conditions are approximately same on these 2 days. Simulation of thermospheric conditions for these 2 days is carried out using the Coupled Thermosphere, Ionosphere, Plasmasphere, and Electrodynamics model. It is found that thermospheric atomic oxygen density is enhanced in the aftermath of the major magnetic storm of 17 March 2015, resulting in enhanced ion-neutral collision frequencies over the dip equator on 20 March. This limits the height to which an EPB rises over the dip equator on this day, and thus impacts the latitudinal distribution of scintillations.

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Study of the effect of 17–18 March 2015 geomagnetic storm on the Indian longitudes using GPS and C/NOFS

Cited by 36 publications

References 37 publications

Geospace system responses to the St. Patrick's Day storms in 2013 and 2015

Geospace system responses to the St. Patrick's Day storms in 2013 and 2015

Effects of CME and CIR induced geomagnetic storms on low-latitude ionization over Indian longitudes in terms of neutral dynamics

Effect of Magnetic Storm Related Thermospheric Changes on the Evolution of Equatorial Plasma Bubbles

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