globalchange  > 气候减缓与适应
DOI: 10.1002/2017JA025131
Scopus记录号: 2-s2.0-85050283446
论文题名:
Observation of Intermittency-Induced Critical Dynamics in Geomagnetic Field Time Series Prior to the Intense Magnetic Storms of March, June, and December 2015
作者: Balasis G.; Daglis I.A.; Contoyiannis Y.; Potirakis S.M.; Papadimitriou C.; Melis N.S.; Giannakis O.; Papaioannou A.; Anastasiadis A.; Kontoes C.
刊名: Journal of Geophysical Research: Space Physics
ISSN: 21699380
出版年: 2018
卷: 123, 期:6
起始页码: 4594
结束页码: 4613
语种: 英语
英文关键词: criticality ; magnetic storm ; magnetospheric dynamics ; phase transition ; space weather
英文摘要: Criticality has been proposed as a suitable framework to study the nonlinear system of the Earth's magnetosphere. The magnetic field variations observed by the midlatitude HellENIc GeoMagnetic Array with respect to the most intense magnetic storms (Dst <− 150 nT) of the current solar cycle (i.e., 17 March, 23 June, and 20 December 2015) are analyzed using the method of critical fluctuations. We show that the application of method of critical fluctuation to the HellENIc GeoMagnetic Array time series reveals the existence of intermittency-induced criticality in the range of 6 to 45 hr prior to the onset of these events. The results suggest that the underlying dynamical processes in the magnetosphere prior to intense magnetic storms present dynamics analogous to those of thermal systems undergoing second-order phase transition. Our findings demonstrate that the proposed method can be very relevant for the analysis of critical fluctuations in the framework of space systems. ©2018. American Geophysical Union. All Rights Reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/113757
Appears in Collections:气候减缓与适应

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作者单位: Institute for Astronomy, Astrophysics, Space Applications and Remote Sensing, National Observatory of Athens, Athens, Greece; Department of Physics, National and Kapodistrian University of Athens, Athens, Greece; Department of Electrical and Electronics Engineering, University of West Attica, Athens, Greece; Institute of Geodynamics, National Observatory of Athens, Athens, Greece

Recommended Citation:
Balasis G.,Daglis I.A.,Contoyiannis Y.,et al. Observation of Intermittency-Induced Critical Dynamics in Geomagnetic Field Time Series Prior to the Intense Magnetic Storms of March, June, and December 2015[J]. Journal of Geophysical Research: Space Physics,2018-01-01,123(6)
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