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https://hdl.handle.net/123456789/1220| Τύπος: | Άρθρο σε επιστημονικό περιοδικό |
| Τίτλος: | Study of the Ground Level Enhancements effect on atmospheric electric properties and mineral dust particle charging |
| Συγγραφέας: | [EL] Μάλλιος Σωτήριος[EN] Mallios, Sotirios [EL] Παπαϊωάννου, Αθανάσιος[EN] Papaioannou, Athanasios [EN] Herbst, Konstantin [EL] Παπαγγελής, Γεώργιος[EN] Papangelis, Georgios [EL] Χλούπης, Γεώργιος[EN] Hloupis, George |
| Ημερομηνία: | 12/04/2022 |
| Περίληψη: | The effect of Ground Level Enhancements (GLEs) on the atmospheric and dust particles electrical properties is studied. It has been found that in the case of fair weather conditions, GLE events enhance the atmospheric electrical conductivity, reduce the columnar resistance, and modify the fair weather electric field, air–earth conduction current, and possibly the Ionospheric Potential (IP) in a way that depends on the geomagnetic cut-off rigidity of the location and the altitude. If a dust particle layer is present, GLE events tend to cancel its electrical effects in the ambient atmosphere. This means that the enhancement of the electric field and the reduction of atmospheric electrical conductivity, caused by the ion attachment to dust particles, not only tend to return to their ambient fair weather values, but they can be further modified as if the dust layer was not present. Finally, in terms of dust particles’ electrical properties, GLE events tend to modify the ion attachment mechanism, and in principle, the particle net charge, and the electric field ‘‘sensed’’ by them, increase. Nevertheless, since the electrical force magnitude is up to six orders of magnitude less than gravity, the increase of the particles’ electrical properties is not sufficient to modify the particle settling dynamics and settling velocities. |
| Γλώσσα: | Αγγλικά |
| Σελίδες: | 19 |
| DOI: | 10.1016/j.jastp.2022.105871 |
| EISSN: | 1879-1824 |
| Θεματική κατηγορία: | [EL] Γεωφυσική[EN] Geophysics |
| Λέξεις-κλειδιά: | Ground Level Enhancement; Atmospheric electricity; Global electric circuit; Dust particles settling; Dust particle electrification |
| Κάτοχος πνευματικών δικαιωμάτων: | © 2022 Elsevier Ltd. All rights reserved. |
| Ηλεκτρονική διεύθυνση του τεκμηρίου στον εκδότη: | https://www.sciencedirect.com/science/article/pii/S1364682622000451 |
| Ηλεκτρονική διεύθυνση περιοδικού: | https://www.sciencedirect.com/journal/journal-of-atmospheric-and-solar-terrestrial-physics |
| Τίτλος πηγής δημοσίευσης: | Journal of Atmospheric and Solar-Terrestrial Physics (JASTP) |
| Τόμος: | 233-234 |
| Σελίδες τεκμηρίου (στην πηγή): | Article no 105871 |
| Σημειώσεις: | SM, GP, GH, and AP are funded by the project: ‘‘Modeling and Measuring Electrical Properties of Desert Dust Layers–Medimnos’’ (MIS 5049929) under the call for proposals ‘‘Researcher support with emphasis on new researchers’’ (EDBM103). The project is co-financed by Greece and the European Union (European Social Fund—ESF) by the Operational Programme Human Resources Development, Education and Lifelong Learning 2014–2020. |
| Εμφανίζεται στις συλλογές: | Ερευνητικές ομάδες |
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