المؤلفون: D. Recchiuti, G. D’Angelo, E. Papini, P. Diego, A. Cicone, A. Parmentier, P. Ubertini, R. Battiston, M. Piersanti

المصدر: Frontiers in Earth Science, Vol 11 (2023)

مصطلحات موضوعية: lithosphere-ionosphere coupling, ionospheric background, earthquake, non-linear data analysis, electromagnetic emissions, Science

وصف الملف: electronic resource

Relation: https://www.frontiersin.org/articles/10.3389/feart.2023.1152343/full; https://doaj.org/toc/2296-6463

URL الوصول: https://doaj.org/article/0505dcffeac241dca3f75b0c5b854865

المؤلفون: Recchiuti, D, D’Angelo, G, Papini, E, Diego, P, Cicone, A, Parmentier, A, Ubertini, P, Battiston, R, Piersanti, M

المصدر: Frontiers in Earth Science. 11

مصطلحات موضوعية: Ionospheric disturbances (such as electromagnetic emissions) in connection to strong earthquakes have been reported in literature for over two decades. In order to be reliable, the identification of such disturbances requires a preliminary robust definition of the ionospheric background in the absence of both seismic activity and any other possible input (e.g., transient change in solar activity). In this work, we present a new technique for the assessment of the electromagnetic (EM) background in the ionosphere over seismic regions. The background is estimated via a multiscale statistical analysis that makes use of most of the electric- and magnetic-field datasets (2019–2021) from the China Seismo-Electromagnetic Satellite (CSES-01). The result is a map of the average relative energy in a 6° x 6° LAT-LON cell centered at the earthquake epicenter (EE). Only EM signals that statistically differ from the background should be considered as events suitable for investigation. The method is tested against two strong seismic events, the 14 August 2021 Haitian earthquake (7.2 MW) and the 27 September 2021 Cretan earthquake (6.0 MW). In the former case, a signal (with characteristic frequency of 250 Hz) can be identified, which emerges from the background. In the latter one, the concurrent strong geomagnetic activity does not allow to tell any distinct signal apart from the background, which emerges from the background. In the latter one, transient change in solar activity). In this work, the concurrent strong geomagnetic activity does not allow to tell any distinct signal apart from the background, the identification of such disturbances requires a preliminary robust definition of the ionospheric background in the absence of both seismic activity and any other possible input (e.g, General Earth and Planetary Sciences, we present a new technique for the assessment of the electromagnetic (EM) background in the ionosphere over seismic regions. The background is estimated via a multiscale statistical analysis that makes use of most of the electric- and magnetic-field datasets (2019–2021) from the China Seismo-Electromagnetic Satellite (CSES-01). The result is a map of the average relative energy in a 6° x 6° LAT-LON cell centered at the earthquake epicenter (EE). Only EM signals that statistically differ from the background should be considered as events suitable for investigation. The method is tested against two strong seismic events, Ionospheric disturbances (such as electromagnetic emissions) in connection to strong earthquakes have been reported in literature for over two decades. In order to be reliable, the 14 August 2021 Haitian earthquake (7.2 MW) and the 27 September 2021 Cretan earthquake (6.0 MW). In the former case, a signal (with characteristic frequency of 250 Hz) can be identified

URL الوصول: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4a4f097ee07222919ba1a7067d7d5035
https://doi.org/10.3389/feart.2023.1152343

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المؤلفون: Shuji Hao, Li Qingliang, Che haiqin, Yang Jutao, Yan Yubo, Wu Zhensen, Xu Zhenwen

المصدر: Annals of Geophysics, Vol 56, Iss 5 (2014)

مصطلحات موضوعية: Ionospheric heating, Ionospheric background, Heating effects, Heating parameters, Electron density gradient, Meteorology. Climatology, QC851-999, Geophysics. Cosmic physics, QC801-809

وصف الملف: electronic resource

Relation: http://www.annalsofgeophysics.eu/index.php/annals/article/view/6308; https://doaj.org/toc/1593-5213; https://doaj.org/toc/2037-416X

URL الوصول: https://doaj.org/article/82a2eb8ee7724b7fac9e5e22f6f04168

المؤلفون: Che Hai-Qin, Wu Zhensen, Li Qing-Liang, Yang Ju-Tao, Shuji Hao, Yan Yubo, Xu Zhenwen

المصدر: Annals of Geophysics, Vol 56, Iss 5 (2014)

مصطلحات موضوعية: Electron density, Materials science, Heating parameters, lcsh:QC801-809, Ionospheric background, Geophysics, Ionospheric heating, lcsh:QC851-999, F region, Heating effects, Electron density gradient, Latitude, Computational physics, lcsh:Geophysics. Cosmic physics, Critical frequency, Physics::Space Physics, Radiative transfer, Reflection (physics), Range (statistics), lcsh:Meteorology. Climatology, Ionosphere

URL الوصول: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::30a18d7f503421e8d3ecaee9d969b1dd
https://doi.org/10.4401/ag-6308

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