https://m2.mtmt.hu/ hun 2026-09-21 16:46 BookChapter 33797498 APPROVED true 0 false 2026-07-23T11:10:34.342+0000 2025-02-26T16:27:09.561+0000 2023-05-05T06:04:16.734+0000 true 10055269 Bozóki Tamás /api/author/10055269 Author true 10055269 2025-02-26T16:27:09.567+0000 2025-02-26T16:27:09.567+0000 true false true 31 31 /api/publicationtype/31 PublicationType 4 true 31 BookChapter true 10000175 Abstract true 31 31 /api/publicationtype/31 PublicationType 4 true 31 BookChapter /api/subtype/10000175 Absztrakt / Kivonat SubType 453 true 10000175 true 1 /api/category/1 Category true 1 Bozoki, Tamas ELF-transients detected in the broadband recordings at the Hylaty station in Poland EGU23-17102 EGU23-17102 2023 Lightning acts as a natural antenna radiating electromagnetic (EM) waves in a wide frequency range. In the extremely low frequency (ELF) band (3 Hz - 3 kHz), lightning-induced EM waves suffer very weak attenuation while they propagate in the waveguide formed by the Earth’s surface and the lowest part of the ionosphere. These EM waves can travel around the Earth several times before losing most of their energy. This allows ELF-transients generated by powerful lightning discharges from around the globe to be detected at any observation site. We developed an algorithm that identifies ELF-transients in the broadband recordings at Hylaty, Poland (sampling frequency: 3004.81 Hz, antenna bandwidth: 0.02 Hz to 1.1 kHz) and finds their most probable source lightning discharge in the lightning database of the Word Wide Lightning Location Network (WWLLN) based on the technique described by Bór et al. (2022).Between July 2020 and April 2021 about 270,000 ELF-transients were found in the records from Hylaty. The most probable source of 160,000 transients was identified in the WWLLN database. Using this data set, we show that the propagation speed of broadband ELF-transients differ significantly when the propagation path is on the dayside or on the nightside of the Earth. It is also demonstrated that for lightning discharges close to Hylaty (d<2Mm), the timing and location accuracy of WWLLN has a large impact on the identification of the lightning source and on the inferred propagation speed. A convolutional neural network, trained with ELF-transients of known source location, was used to determine the distance to the lightning source in cases where the source lightning discharge could not be found in the WWLLN database. The average accuracy of the distance provided by the neural network is 700 km. No significant difference can be seen between the distribution of distances obtained by matching the source lightning stroke in the WWLLN database and that obtained using the neural network-based approach. Reference:Bór, J., Szabóné André, K., Bozóki, T., Mlynarczyk, J., Steinbach, P., Novák, A., and Lemperger, I. (2022): Estimating the Attenuation of ELF-Band Radio Waves in the Earth’s Crust by Q-Bursts. IEEE Transactions on Antennas and Propagation, 70, 8. https://doi.org/10.1109/TAP.2022.3161504 Funding 2026593 /api/funding/2026593 false true Funding 2026594 /api/funding/2026594 false true 2023 true true false true false NONE 2026-07-23 false 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 false false false false 2023-08-03T06:04:18.087+0000 Földfizikai és Űrtudományi Kutatóintézet; Információs Technológiai és Bionikai Kar (PPKE) 6 37 2 8 0 true true 10002 English /api/language/10002 Angol Language true 2 false true 10582 true 10011 /api/country/10011 Country true 5 /api/city/10582 City true 1134806 true 24318578 NONE IDENTICAL /api/publicationidentifier/24318578 https://meetingorganizer.copernicus.org/EGU23/abstracts-of-special-interest/highlight https://meetingorganizer.copernicus.org/EGU23/abstracts-of-special-interest/highlight PublicationIdentifier true 40 Other URL @@@ /api/publicationsource/40 Egyéb URL PlainSource true true 10006 /api/publicationsourcetype/10006 PublicationSourceType true true 40 true false true /api/publication/33655614 true true 32 32 /api/publicationtype/32 PublicationType 6 true 32 Book EGU General Assembly 2023: Abstracts false false 33655614 false true true true false Book 2023 true 1 /api/category/1 Category true 1 false Language 10002 /api/language/10002 Angol English true 2 true PersonAuthorship 107599556 /api/authorship/107599556 1 0.125 true false Author 10055269 /api/author/10055269 Bozóki Tamás true 10055269 true Bozoki Tamas true false false AuthorshipType 1 /api/authorshiptype/1 0 true 0 true false true PersonAuthorship 107599557 /api/authorship/107599557 2 0.125 false false Młynarczyk Janusz true false false AuthorshipType 1 /api/authorshiptype/1 0 true 0 true false true PersonAuthorship 107599558 /api/authorship/107599558 3 0.125 false false Author 10015875 /api/author/10015875 Bór József true 10015875 true Bor Jozsef true false false AuthorshipType 1 /api/authorshiptype/1 0 true 0 true false true PersonAuthorship 107599559 /api/authorship/107599559 4 0.125 false false Kubisz Jerzy true false false AuthorshipType 1 /api/authorshiptype/1 0 true 0 true false true PersonAuthorship 107599560 /api/authorship/107599560 5 0.125 false false Author 10060523 /api/author/10060523 Bozsó István true 10060523 true Bozso Istvan true false false AuthorshipType 1 /api/authorshiptype/1 0 true 0 true false true PersonAuthorship 107599561 /api/authorship/107599561 6 0.125 false false Author 10029872 /api/author/10029872 Horváth András true 10029872 true Horvath Andras true false false AuthorshipType 1 /api/authorshiptype/1 0 true 0 true false true PersonAuthorship 107599562 /api/authorship/107599562 7 0.125 false false Author 10050722 /api/author/10050722 Kuslits Lukács true 10050722 true Kuslits Lukacs true false false AuthorshipType 1 /api/authorshiptype/1 0 true 0 true false true PersonAuthorship 107599563 /api/authorship/107599563 8 0.125 false true Author 10066197 /api/author/10066197 Timkó Máté true true Timko Mate true false false AuthorshipType 1 /api/authorshiptype/1 0 true 0 true false true PublicationIdentifier 23501228 /api/publicationidentifier/23501228 PlainSource 6 /api/publicationsource/6 PublicationSourceType 10001 /api/publicationsourcetype/10001 true true true DOI DOI https://doi.org/@@@ true true 6 true 10.5194/egusphere-egu23-17102 https://doi.org/10.5194/egusphere-egu23-17102 false true PublicationIdentifier 23501240 /api/publicationidentifier/23501240 PlainSource 40 /api/publicationsource/40 PublicationSourceType 10006 /api/publicationsourcetype/10006 true true true Egyéb URL Other URL @@@ true true 40 true https://meetingorganizer.copernicus.org/EGU23/EGU23-17102.html https://meetingorganizer.copernicus.org/EGU23/EGU23-17102.html false true /api/publication/33797498 <div class="BookChapter Publication long-list"> <div class="authors"> <img title="Forrásközlemény" style="float: left" src="/frontend/resources/grid/publication-core-icon.png"> <div class="autype autype0"> <span class="author-name" mtid="10055269"><a href="/gui2/?type=authors&mode=browse&sel=10055269" target="_blank">Bozoki Tamas (<span class="authorship-author-name">Bozóki Tamás</span> <span class="authorAux-mtmt"> Geofizika</span>) </a> </span> <span class="author-affil">Földfizikai és Űrtudományi Kutatóintézet</span> ;&nbsp;&nbsp;&nbsp; <span class="author-name" >Młynarczyk Janusz </span> ;&nbsp;&nbsp;&nbsp; <span class="author-name" mtid="10015875"><a href="/gui2/?type=authors&mode=browse&sel=10015875" target="_blank">Bor Jozsef (<span class="authorship-author-name">Bór József</span> <span class="authorAux-mtmt"> Aeronómia</span>) </a> </span> <span class="author-affil">Földfizikai és Űrtudományi Kutatóintézet</span> ;&nbsp;&nbsp;&nbsp; <span class="author-name" >Kubisz Jerzy </span> ;&nbsp;&nbsp;&nbsp; <span class="author-name" mtid="10060523"><a href="/gui2/?type=authors&mode=browse&sel=10060523" target="_blank">Bozso Istvan (<span class="authorship-author-name">Bozsó István</span> <span class="authorAux-mtmt"> Geofizika</span>) </a> </span> <span class="author-affil">Földfizikai és Űrtudományi Kutatóintézet</span> ;&nbsp;&nbsp;&nbsp; <span class="author-name" mtid="10029872"><a href="/gui2/?type=authors&mode=browse&sel=10029872" target="_blank">Horvath Andras (<span class="authorship-author-name">Horváth András</span> <span class="authorAux-mtmt"> mérnöki tudományok</span>) </a> </span> <span class="author-affil"><span title="Pázmány Péter Katolikus Egyetem">PPKE</span>/Információs Technológiai és Bionikai Kar; Földfizikai és Űrtudományi Kutatóintézet</span> ;&nbsp;&nbsp;&nbsp; <span class="author-name" mtid="10050722"><a href="/gui2/?type=authors&mode=browse&sel=10050722" target="_blank">Kuslits Lukacs (<span class="authorship-author-name">Kuslits Lukács</span> <span class="authorAux-mtmt"> felszíni geofizika</span>) </a> </span> <span class="author-affil">Földfizikai és Űrtudományi Kutatóintézet</span> ;&nbsp;&nbsp;&nbsp; <span class="author-name" mtid="10066197"><a href="/gui2/?type=authors&mode=browse&sel=10066197" target="_blank">Timko Mate (<span class="authorship-author-name">Timkó Máté</span> <span class="authorAux-mtmt"> Szeizmológia</span>) </a> </span> <span class="author-affil">Földfizikai és Űrtudományi Kutatóintézet</span> </div> </div> <div class="title"><a href="/gui2/?mode=browse&params=publication;33797498" target="_blank">ELF-transients detected in the broadband recordings at the Hylaty station in Poland</a></div> <div class="InBook"><div class="chapter-in">In:</div> <div class="authors"> <div class="autype autype-1"> <span class="author-affil">European Geosciences Union General Assembly</span> (szerk.) </div> </div> <div class="booktitle"><a href="/gui2/?mode=browse&params=publication;33655614" target="_blank">EGU General Assembly 2023: Abstracts </a></div> <div class="conference"> Konferencia helye, ideje: <span class="location">Bécs, Ausztria <span class="conference-date">2023.04.23. - 2023.04.28.</span> </div> <span class="publishedAt">München: <span class="publishers">European Geosciences Union (EGU)</span>, <span class="page"> Paper EGU23-17102. </span> <span class="year">(2023)</span> </div> <div class="pub-footer"> <span class="language" xmlns="http://www.w3.org/1999/html">Nyelv: Angol | </span> <span class="identifiers"> <span class="id identifier oa_none" title="none"> <a style="color:black" title="10.5194/egusphere-egu23-17102" target="_blank" href="https://doi.org/10.5194/egusphere-egu23-17102"> DOI </a> </span> <span class="id identifier oa_none" title="none"> <a style="color:black" title="https://meetingorganizer.copernicus.org/EGU23/EGU23-17102.html" target="_blank" href="https://meetingorganizer.copernicus.org/EGU23/EGU23-17102.html"> Egyéb URL </a> </span> </span> <span class="bookchapter-ids">Befoglaló link(ek):</span> <span class="identifiers"> <span class="id identifier oa_NONE" title=" Nincs "> <a style="color:blue" title="https://meetingorganizer.copernicus.org/EGU23/abstracts-of-special-interest/highlight" target="_blank" href="https://meetingorganizer.copernicus.org/EGU23/abstracts-of-special-interest/highlight"> Egyéb URL </a> </span> </span> <div class="mtid"><span class="long-pub-mtid">Közlemény: 33797498</span> | <span class="status-data status-APPROVED"> Nyilvános </span> <span class="long-book-mtid">Befoglaló: 33655614</span> Forrás | <span class="type-subtype">Egyéb konferenciaközlemény ( Absztrakt / Kivonat ) </span> | <span class="pub-category">Tudományos</span> | <span class="publication-sourceOfData">kézi felvitel</span> </div> <div class="funder"> Villámok extrém alacsonyfrekvenciás sugárzásán alapuló új módszerek kidolgozása a földközeli térs...(K138824) Támogató: NKFIH, Gépi tanulási módszerek a földfizikában(SA-46/2021) </div> <div class="lastModified">Utolsó módosítás: 2025.02.26. 17:27 Ladányi Gusztáv (MTMT API user, admin) </div> </div> </div>