{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,25]],"date-time":"2026-06-25T19:58:21Z","timestamp":1782417501288,"version":"3.54.5"},"reference-count":10,"publisher":"STEF92 Technology","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2022,11,15]]},"abstract":"<jats:p>Magnetospheric pulsations and the mechanisms underlying their generation are topics under active studies. The Pc5 (f =1.7\ufffd6.7 mHz) geomagnetic continuous pulsations, recorded at mid latitudes (L =1.6) during December 2019, with a low level of geomagnetic activity, are analyzed and discussed in this paper. The data sets of the series on geomagnetic field variations recorded at Panagjuriste Geomagnetic Observatory in Bulgaria are analyzed. The spectral characteristics of the pulsations were determined by Continuous Wavelet Analysis (CWT). It is demonstrated that Pc5 pulsation activity appears with all ranges of periods (140-600s) on December 6, 8, and 18, 2019, at time intervals of 02-17 UTC, 14-20 UTC, and 00-16 UTC, respectively. Then, the solar wind (SW) plasma speed, the flow dynamic pressure, and the geomagnetic index Kp are computed for every case of recorded Pc5 pulsations. It is suggested that recorded continuous pulsations in the Pc5 range are due to step-like or sudden increases in solar wind oscillations and variations of the flow dynamic pressure, which precede the appearance of pulsations and drive compressional magnetic field variations in the magnetosphere.<\/jats:p>","DOI":"10.5593\/sgem2022\/1.1\/s05.059","type":"proceedings-article","created":{"date-parts":[[2023,2,13]],"date-time":"2023-02-13T05:06:21Z","timestamp":1676264781000},"page":"509-516","source":"Crossref","is-referenced-by-count":1,"title":["CHARACTERISTICS OF Pc5 PULSATIONS ACTIVITY AT MID LATITUDES DURING DECEMBER 2019"],"prefix":"10.5593","volume":"22","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-8245-5604","authenticated-orcid":true,"given":"Maria","family":"Chamati","sequence":"first","affiliation":[{"name":"National Institute of Geophysics, Geodesy and Geography - Bulgarian Academy of Sciences","place":["Bulgaria"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"3602","reference":[{"key":"ref=1","doi-asserted-by":"crossref","unstructured":"[1] McPherron RL. 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Journal of Geophysical Research: Space Physics 2010;115. https:\/\/doi.org\/10.1029\/2010JA015299.","DOI":"10.1029\/2010JA015299"},{"key":"ref=8","doi-asserted-by":"crossref","unstructured":"[8] El-Eraki MA, Rabeh T, Lethy A, Ghamry E, Samy A. Detection of long period Pc5 pulsation during 01st\/Jul\/2011 to 30th\/Jun\/2012 recorded at Egyptian and some INTERMAGNET observatories. NRIAG Journal of Astronomy and Geophysics 2014;3:192\ufffd7. https:\/\/doi.org\/10.1016\/j.nrjag.2014.11.001.","DOI":"10.1016\/j.nrjag.2014.11.001"},{"key":"ref=9","doi-asserted-by":"crossref","unstructured":"[9] Hynonen R, Tanskanen EI, Francia P. Solar cycle evolution of ULF wave power in solar wind and on ground. J Space Weather Space Clim 2020;10:43. https:\/\/doi.org\/10.1051\/swsc\/2020046.","DOI":"10.1051\/swsc\/2020046"},{"key":"ref=10","doi-asserted-by":"crossref","unstructured":"[10] Kepko L, Spence HE, Singer HJ. ULF waves in the solar wind as direct drivers of magnetospheric pulsations. Geophysical Research Letters 2002;29:39-1-39\ufffd4. https:\/\/doi.org\/10.1029\/2001GL014405.","DOI":"10.1029\/2001GL014405"}],"event":{"name":"22nd SGEM International Multidisciplinary Scientific GeoConference 2022","theme":"Earth and Planetary Sciences","location":"Albena, BG","acronym":"SGEM2022","number":"22","sponsor":["SGEM WORLD SCIENCE (SWS) Scholarly Society, Austria"],"start":{"date-parts":[[2022,7,4]]},"end":{"date-parts":[[2022,7,10]]}},"container-title":["SGEM International Multidisciplinary Scientific GeoConference\ufffd EXPO Proceedings","22nd SGEM International Multidisciplinary Scientific GeoConference Proceedings 2022, Science and Technologies in Geology, Exploration And Mining"],"original-title":[],"deposited":{"date-parts":[[2026,6,25]],"date-time":"2026-06-25T19:25:21Z","timestamp":1782415521000},"score":1,"resource":{"primary":{"URL":"https:\/\/epslibrary.at\/items\/1578ee31-448e-4d14-b3cd-70c0d8674d27\/characteristics-of-pc5-pulsations-activity-at-mid-latitudes-during-december-2019"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2022,11,15]]},"references-count":10,"URL":"https:\/\/doi.org\/10.5593\/sgem2022\/1.1\/s05.059","relation":{},"ISSN":["1314-2704"],"issn-type":[{"value":"1314-2704","type":"print"}],"subject":[],"published":{"date-parts":[[2022,11,15]]}}}