Strong Rayleigh Wave Radiation Toward Southwest From Ionospheric Observations of the Elbistan Earthquake of the 2023 Kahramanmaras, Türkiye, Doublet

Abstract The 2023 Elbistan (Mw 7.6) earthquake, the second event of the Kahramanmaraş, Türkiye doublet, occurred by bilateral sub‐ and supershear fault ruptures toward northeast and southwest, respectively. Utilizing the data from a dense network of global navigation satellite system (GNSS) receiver...

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Main Authors: Mala S. Bagiya, Himangshu Paul, Shubham K. Rajewar, Vineet K. Gahalaut, Kosuke Heki
Format: Article
Language:English
Published: Wiley 2025-03-01
Series:Geophysical Research Letters
Subjects:
Online Access:https://doi.org/10.1029/2024GL112923
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author Mala S. Bagiya
Himangshu Paul
Shubham K. Rajewar
Vineet K. Gahalaut
Kosuke Heki
author_facet Mala S. Bagiya
Himangshu Paul
Shubham K. Rajewar
Vineet K. Gahalaut
Kosuke Heki
author_sort Mala S. Bagiya
collection DOAJ
description Abstract The 2023 Elbistan (Mw 7.6) earthquake, the second event of the Kahramanmaraş, Türkiye doublet, occurred by bilateral sub‐ and supershear fault ruptures toward northeast and southwest, respectively. Utilizing the data from a dense network of global navigation satellite system (GNSS) receivers in Türkiye, we investigated the Rayleigh surface wave signatures in the ionosphere. We found significantly larger signals to the southwest of the epicenter that cannot be explained by the satellite line‐of‐sight geometry. This strong beam toward southwest, possibly caused by the supershear rupture, was also supported by observations with seismometers and GNSS kinematic solutions. Our finding demonstrates that Rayleigh wave signatures in ionosphere contain rich information on earthquake source processes.
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series Geophysical Research Letters
spelling doaj-art-a60106c2bc9c4e8c901bfc2133b196b32025-08-20T02:11:21ZengWileyGeophysical Research Letters0094-82761944-80072025-03-01526n/an/a10.1029/2024GL112923Strong Rayleigh Wave Radiation Toward Southwest From Ionospheric Observations of the Elbistan Earthquake of the 2023 Kahramanmaras, Türkiye, DoubletMala S. Bagiya0Himangshu Paul1Shubham K. Rajewar2Vineet K. Gahalaut3Kosuke Heki4Indian Institute of Geomagnetism (DST) Navi Mumbai IndiaCSIR—National Geophysical Research Institute Hyderabad IndiaCSIR—National Geophysical Research Institute Hyderabad IndiaCSIR—National Geophysical Research Institute Hyderabad IndiaHokkaido University Sapporo JapanAbstract The 2023 Elbistan (Mw 7.6) earthquake, the second event of the Kahramanmaraş, Türkiye doublet, occurred by bilateral sub‐ and supershear fault ruptures toward northeast and southwest, respectively. Utilizing the data from a dense network of global navigation satellite system (GNSS) receivers in Türkiye, we investigated the Rayleigh surface wave signatures in the ionosphere. We found significantly larger signals to the southwest of the epicenter that cannot be explained by the satellite line‐of‐sight geometry. This strong beam toward southwest, possibly caused by the supershear rupture, was also supported by observations with seismometers and GNSS kinematic solutions. Our finding demonstrates that Rayleigh wave signatures in ionosphere contain rich information on earthquake source processes.https://doi.org/10.1029/2024GL1129232023 February earthquake in Türkiyecoseismic ionospheric disturbanceRayleigh surface wavesupershear ruptureradiation patternhigh‐rate GNSS
spellingShingle Mala S. Bagiya
Himangshu Paul
Shubham K. Rajewar
Vineet K. Gahalaut
Kosuke Heki
Strong Rayleigh Wave Radiation Toward Southwest From Ionospheric Observations of the Elbistan Earthquake of the 2023 Kahramanmaras, Türkiye, Doublet
Geophysical Research Letters
2023 February earthquake in Türkiye
coseismic ionospheric disturbance
Rayleigh surface wave
supershear rupture
radiation pattern
high‐rate GNSS
title Strong Rayleigh Wave Radiation Toward Southwest From Ionospheric Observations of the Elbistan Earthquake of the 2023 Kahramanmaras, Türkiye, Doublet
title_full Strong Rayleigh Wave Radiation Toward Southwest From Ionospheric Observations of the Elbistan Earthquake of the 2023 Kahramanmaras, Türkiye, Doublet
title_fullStr Strong Rayleigh Wave Radiation Toward Southwest From Ionospheric Observations of the Elbistan Earthquake of the 2023 Kahramanmaras, Türkiye, Doublet
title_full_unstemmed Strong Rayleigh Wave Radiation Toward Southwest From Ionospheric Observations of the Elbistan Earthquake of the 2023 Kahramanmaras, Türkiye, Doublet
title_short Strong Rayleigh Wave Radiation Toward Southwest From Ionospheric Observations of the Elbistan Earthquake of the 2023 Kahramanmaras, Türkiye, Doublet
title_sort strong rayleigh wave radiation toward southwest from ionospheric observations of the elbistan earthquake of the 2023 kahramanmaras turkiye doublet
topic 2023 February earthquake in Türkiye
coseismic ionospheric disturbance
Rayleigh surface wave
supershear rupture
radiation pattern
high‐rate GNSS
url https://doi.org/10.1029/2024GL112923
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