Ionospheric Response to the 6 February 2023 Turkey–Syria Earthquake
Two strong earthquakes occurred in Turkey on 6 February 2023, at 01:17:34 (nighttime, Mw = 7.8) and at 10:24:50 UT (daytime, Mw = 7.5). The seismo-ionospheric impact is an important part of the near-Earth environment state. This paper provides the first results on the ionospheric effects associated...
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MDPI AG
2023-04-01
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| Series: | Remote Sensing |
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| Online Access: | https://www.mdpi.com/2072-4292/15/9/2336 |
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| author | Artem Vesnin Yury Yasyukevich Natalia Perevalova Erman Şentürk |
| author_facet | Artem Vesnin Yury Yasyukevich Natalia Perevalova Erman Şentürk |
| author_sort | Artem Vesnin |
| collection | DOAJ |
| description | Two strong earthquakes occurred in Turkey on 6 February 2023, at 01:17:34 (nighttime, Mw = 7.8) and at 10:24:50 UT (daytime, Mw = 7.5). The seismo-ionospheric impact is an important part of the near-Earth environment state. This paper provides the first results on the ionospheric effects associated with the aforementioned earthquakes. We used data from global navigation satellite system (GNSS) receivers and ionosondes. We found that both earthquakes generated circle disturbance in the ionosphere, detected by GNSS data. The amplitude of the ionospheric response caused by daytime M7.5 earthquake exceeded by five times that caused by nighttime M7.8 earthquake: 0.5 TECU/min and 0.1 TECU/min, respectively, according to the ROTI data. The velocities of the earthquake-related ionospheric waves were ~2000 m/s, as measured by ROTI, for the M7.5 earthquake. TEC variations with 2–10 min periods showed velocities from 1500 to 900 m/s as disturbances evolved. Ionospheric disturbances occurred around epicenters and propagated to the south by means of 2–10 min TEC variations. ROTI data showed a more symmetric distribution with irregularities observed both to the South and to the North from 10:24:50 UT epicenter. The ionospheric effects were recorded over 750 km from the epicenters. Ionosonde located 420/490 km from the epicenters did not catch ionospheric effects. The results show significant asymmetry in the propagation of coseismic ionospheric disturbances. We observed coseismic ionospheric disturbances associated with Rayleigh mode and acoustic modes, but we did not observe disturbances associated with acoustic gravity mode. |
| first_indexed | 2024-03-11T04:08:03Z |
| format | Article |
| id | doaj.art-8703fca779bb4ff2954304f1c9728bcc |
| institution | Directory Open Access Journal |
| issn | 2072-4292 |
| language | English |
| last_indexed | 2024-03-11T04:08:03Z |
| publishDate | 2023-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Remote Sensing |
| spelling | doaj.art-8703fca779bb4ff2954304f1c9728bcc2023-11-17T23:38:45ZengMDPI AGRemote Sensing2072-42922023-04-01159233610.3390/rs15092336Ionospheric Response to the 6 February 2023 Turkey–Syria EarthquakeArtem Vesnin0Yury Yasyukevich1Natalia Perevalova2Erman Şentürk3Institute of Solar Terrestrial Physics of Siberian Branch of Russian Academy of Sciences (ISTP SB RAS), St. Lermontov 126a, 664033 Irkutsk, RussiaInstitute of Solar Terrestrial Physics of Siberian Branch of Russian Academy of Sciences (ISTP SB RAS), St. Lermontov 126a, 664033 Irkutsk, RussiaInstitute of Solar Terrestrial Physics of Siberian Branch of Russian Academy of Sciences (ISTP SB RAS), St. Lermontov 126a, 664033 Irkutsk, RussiaDepartment of Geomatics Engineering, Kocaeli University, 41001 Kocaeli, TurkeyTwo strong earthquakes occurred in Turkey on 6 February 2023, at 01:17:34 (nighttime, Mw = 7.8) and at 10:24:50 UT (daytime, Mw = 7.5). The seismo-ionospheric impact is an important part of the near-Earth environment state. This paper provides the first results on the ionospheric effects associated with the aforementioned earthquakes. We used data from global navigation satellite system (GNSS) receivers and ionosondes. We found that both earthquakes generated circle disturbance in the ionosphere, detected by GNSS data. The amplitude of the ionospheric response caused by daytime M7.5 earthquake exceeded by five times that caused by nighttime M7.8 earthquake: 0.5 TECU/min and 0.1 TECU/min, respectively, according to the ROTI data. The velocities of the earthquake-related ionospheric waves were ~2000 m/s, as measured by ROTI, for the M7.5 earthquake. TEC variations with 2–10 min periods showed velocities from 1500 to 900 m/s as disturbances evolved. Ionospheric disturbances occurred around epicenters and propagated to the south by means of 2–10 min TEC variations. ROTI data showed a more symmetric distribution with irregularities observed both to the South and to the North from 10:24:50 UT epicenter. The ionospheric effects were recorded over 750 km from the epicenters. Ionosonde located 420/490 km from the epicenters did not catch ionospheric effects. The results show significant asymmetry in the propagation of coseismic ionospheric disturbances. We observed coseismic ionospheric disturbances associated with Rayleigh mode and acoustic modes, but we did not observe disturbances associated with acoustic gravity mode.https://www.mdpi.com/2072-4292/15/9/2336earthquakeionospheric responsecoseismic ionospheric disturbanceacoustic waves |
| spellingShingle | Artem Vesnin Yury Yasyukevich Natalia Perevalova Erman Şentürk Ionospheric Response to the 6 February 2023 Turkey–Syria Earthquake Remote Sensing earthquake ionospheric response coseismic ionospheric disturbance acoustic waves |
| title | Ionospheric Response to the 6 February 2023 Turkey–Syria Earthquake |
| title_full | Ionospheric Response to the 6 February 2023 Turkey–Syria Earthquake |
| title_fullStr | Ionospheric Response to the 6 February 2023 Turkey–Syria Earthquake |
| title_full_unstemmed | Ionospheric Response to the 6 February 2023 Turkey–Syria Earthquake |
| title_short | Ionospheric Response to the 6 February 2023 Turkey–Syria Earthquake |
| title_sort | ionospheric response to the 6 february 2023 turkey syria earthquake |
| topic | earthquake ionospheric response coseismic ionospheric disturbance acoustic waves |
| url | https://www.mdpi.com/2072-4292/15/9/2336 |
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