Investigation of VLF/LF electric field variations related to magnitude Mw≥5.5 earthquakes in the Mediterranean region for the year 2023

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dc.citation.rankM33
dc.contributor.authorHans Eichelberger
dc.contributor.authorMohammed Y. Boudjada
dc.contributor.authorKonrad Schwingenschuh
dc.contributor.authorBruno P. Besser
dc.contributor.authorDaniel Wolbang
dc.contributor.authorMaria Solovieva
dc.contributor.authorPier F. Biagi
dc.contributor.authorPatrick H. M. Galopeau
dc.contributor.authorGhulam Jaffer
dc.contributor.authorChristoph Schirninger
dc.contributor.authorNina, Aleksandra
dc.contributor.authorGordana Jovanovic
dc.contributor.authorGiovanni Nico
dc.contributor.authorManfred Stachel
dc.contributor.authorÖzer Aydogar
dc.contributor.authorCosima Muck
dc.contributor.authorJosef Wilfinger
dc.contributor.authorIrmgard Jernej
dc.contributor.authorWerner Magnes
dc.date.accessioned2025-01-13T09:01:05Z
dc.date.available2025-01-13T09:01:05Z
dc.date.issued2023
dc.description.abstractStrong natural hazards together with their societal impact are usually accompanied by multiple physical phenomena which can be an important information source about the underlying processes. In this study we statistically analyze the lithosphere–atmosphere–ionosphere couplings of magnitude Mw5.5+ earthquakes (EQs) in the year 2023 with the aid of sub-ionospheric VLF/LF radio links. The electric field amplitude and phase measurements with a temporal resolution of one second are from the seismo-electromagnetic receiver facility in Graz (GRZ), Austria (Galopeau et al., 2023), which is part of the INFREP network. The spatial extend of the study area has the range [-10°E ≤ longitude ≤ 40°E] and [20°N ≤ latitude ≤ 50°N], in total are 17 EQs according to the United States Geological Survey (USGS) data base, among them the Turkey–Syria EQs (main shocks Mw7.8 and Mw7.5) and the Morocco Mw6.8 EQ. We apply the night-time amplitude method (Hayakawa et al., 2010) for all available paths, of particular importance are the transmitter links TBB (26.70 kHz, Bafa, Turkey), ITS (45.90 kHz, Niscemi, Sicily, Italy), and ICV (20.27 kHz, Tavolara, Italy). Relevant crossings are determined by the size of the Dobrovolsky-Bowman relationship (Dobrovolsky et al., 1979; Bowman et al., 1998). A major finding is the statistically significant electric field variation of the TBB-GRZ link related to the Turkey–Syria EQ sequence. A physical interpretation is based on atmospheric gravity waves (AGWs) which could alter the E-layer in the lower ionosphere during nighttime and modulate the height of the waveguide cavity.
dc.identifier.doi10.5194/egusphere-egu24-6001
dc.identifier.urihttps://pub.ipb.ac.rs/handle/123456789/186
dc.publisherCopernicus GmbH
dc.rightsopenAccess
dc.titleInvestigation of VLF/LF electric field variations related to magnitude Mw≥5.5 earthquakes in the Mediterranean region for the year 2023
dc.typeposted-content
dc.type.versionpublishedVersion
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