Ionospheric Effects of Solar Flares in September 2017 and an Evaluation of Their Influence on Errors in Navigation Measurements

I. I. Shagimuratov; I. E. Zakharenkova; N. Yu Tepenitsina; G. A. Yakimova; I. I. Efishov

doi:10.1134/S0016793220050138

Ionospheric Effects of Solar Flares in September 2017 and an Evaluation of Their Influence on Errors in Navigation Measurements

I. I. Shagimuratov, I. E. Zakharenkova, N. Yu Tepenitsina, G. A. Yakimova, I. I. Efishov

Constellation Observing System for Meteorology, Ionosphere, and Climate

RAS - Pushkov Institute of Terrestrial Magnetism, Ionosphere and Radiowave Propagation

Research output: Contribution to journal › Article › peer-review

9 Scopus citations

Abstract

Abstract: The manifestation of the most powerful flares of class X9.3 and X8.2 recorded on September 6 and 10, 2017, respectively, in the total electronic content (TEC) of the ionosphere, are analyzed. GPS observations at midlatitude stations located in the conditions of an illuminated ionosphere were used as the initial data. The ionospheric response was determined from phase measurements of the TEC value along satellite flights over the observation station. A high linear correlation was found between the amplitude of the increase in TEC (ΔТЕС) during flares and the zenith angle of the Sun for longitudinally spaced stations. For the class-X9.3 flare, ΔТЕС exceeded 3 TECU, while for the X8.2 flare, the amplitude was almost two times smaller. It is shown that this is mainly due to the different positions of flares on the solar disk. The spatiotemporal response of the ionosphere to flares was analyzed with TEC maps with a time resolution of 5 min. Errors in navigation measurements that are caused by the effects of solar flares are identified and evaluated.

Original language	English
Pages (from-to)	597-605
Number of pages	9
Journal	Geomagnetism and Aeronomy
Volume	60
Issue number	5
DOIs	https://doi.org/10.1134/S0016793220050138
State	Published - Sep 1 2020

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title = "Ionospheric Effects of Solar Flares in September 2017 and an Evaluation of Their Influence on Errors in Navigation Measurements",

abstract = "Abstract: The manifestation of the most powerful flares of class X9.3 and X8.2 recorded on September 6 and 10, 2017, respectively, in the total electronic content (TEC) of the ionosphere, are analyzed. GPS observations at midlatitude stations located in the conditions of an illuminated ionosphere were used as the initial data. The ionospheric response was determined from phase measurements of the TEC value along satellite flights over the observation station. A high linear correlation was found between the amplitude of the increase in TEC (ΔТЕС) during flares and the zenith angle of the Sun for longitudinally spaced stations. For the class-X9.3 flare, ΔТЕС exceeded 3 TECU, while for the X8.2 flare, the amplitude was almost two times smaller. It is shown that this is mainly due to the different positions of flares on the solar disk. The spatiotemporal response of the ionosphere to flares was analyzed with TEC maps with a time resolution of 5 min. Errors in navigation measurements that are caused by the effects of solar flares are identified and evaluated.",

author = "Shagimuratov, \{I. I.\} and Zakharenkova, \{I. E.\} and Tepenitsina, \{N. Yu\} and Yakimova, \{G. A.\} and Efishov, \{I. I.\}",

note = "Publisher Copyright: {\textcopyright} 2020, Pleiades Publishing, Ltd.",

year = "2020",

month = sep,

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doi = "10.1134/S0016793220050138",

language = "English",

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TY - JOUR

T1 - Ionospheric Effects of Solar Flares in September 2017 and an Evaluation of Their Influence on Errors in Navigation Measurements

AU - Shagimuratov, I. I.

AU - Zakharenkova, I. E.

AU - Tepenitsina, N. Yu

AU - Yakimova, G. A.

AU - Efishov, I. I.

PY - 2020/9/1

Y1 - 2020/9/1

N2 - Abstract: The manifestation of the most powerful flares of class X9.3 and X8.2 recorded on September 6 and 10, 2017, respectively, in the total electronic content (TEC) of the ionosphere, are analyzed. GPS observations at midlatitude stations located in the conditions of an illuminated ionosphere were used as the initial data. The ionospheric response was determined from phase measurements of the TEC value along satellite flights over the observation station. A high linear correlation was found between the amplitude of the increase in TEC (ΔТЕС) during flares and the zenith angle of the Sun for longitudinally spaced stations. For the class-X9.3 flare, ΔТЕС exceeded 3 TECU, while for the X8.2 flare, the amplitude was almost two times smaller. It is shown that this is mainly due to the different positions of flares on the solar disk. The spatiotemporal response of the ionosphere to flares was analyzed with TEC maps with a time resolution of 5 min. Errors in navigation measurements that are caused by the effects of solar flares are identified and evaluated.

AB - Abstract: The manifestation of the most powerful flares of class X9.3 and X8.2 recorded on September 6 and 10, 2017, respectively, in the total electronic content (TEC) of the ionosphere, are analyzed. GPS observations at midlatitude stations located in the conditions of an illuminated ionosphere were used as the initial data. The ionospheric response was determined from phase measurements of the TEC value along satellite flights over the observation station. A high linear correlation was found between the amplitude of the increase in TEC (ΔТЕС) during flares and the zenith angle of the Sun for longitudinally spaced stations. For the class-X9.3 flare, ΔТЕС exceeded 3 TECU, while for the X8.2 flare, the amplitude was almost two times smaller. It is shown that this is mainly due to the different positions of flares on the solar disk. The spatiotemporal response of the ionosphere to flares was analyzed with TEC maps with a time resolution of 5 min. Errors in navigation measurements that are caused by the effects of solar flares are identified and evaluated.

UR - https://www.scopus.com/pages/publications/85094672168

U2 - 10.1134/S0016793220050138

DO - 10.1134/S0016793220050138

M3 - Article

AN - SCOPUS:85094672168

SN - 0016-7932

VL - 60

SP - 597

EP - 605

JO - Geomagnetism and Aeronomy

JF - Geomagnetism and Aeronomy

IS - 5

ER -

Ionospheric Effects of Solar Flares in September 2017 and an Evaluation of Their Influence on Errors in Navigation Measurements

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