DOI: 10.1002/2015GL066277
论文题名: Robust statistical properties of the size of large burst events in AE
作者: Hush P. ; Chapman S.C. ; Dunlop M.W. ; Watkins N.W.
刊名: Geophysical Research Letters
ISSN: 0094-8483
EISSN: 1944-8214
出版年: 2015
卷: 42, 期: 21 起始页码: 9197
结束页码: 9202
语种: 英语
英文关键词: burst distributions
; extreme events
; geomagnetic indices
; geomagnetic storms
; space climate
Scopus关键词: Solar energy
; Time series
; Burst distributions
; Extreme events
; Geomagnetic indices
; Geomagnetic storm
; Space climate
; Geomagnetism
; data set
; extreme event
; geomagnetic field
; geomagnetic storm
; index method
; size
; solar cycle
; spatial distribution
; statistical analysis
; threshold
; time series
英文摘要: Geomagnetic indices provide a comprehensive data set with which to quantify space climate, that is, how the statistical likelihood of activity varies with the solar cycle. We characterize space climate by the AE index burst distribution. Burst sizes are constructed by thresholding the AE time series; a burst is the sum of the excess in the time series for each time interval over which the threshold is exceeded. The distribution of burst sizes is two component with a crossover in behavior at thresholds ≈1000 nT. Above this threshold, we find a range over which the mean burst size varies weakly with threshold for both solar maxima and minima. The burst size distribution of the largest events is exponential. The relative likelihood of these large events varies from one solar maximum and minimum to the next. Given the relative overall activity of a solar maximum/minimum, these results constrain the likelihood of extreme events of a given size. © 2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84955194670&doi=10.1002%2f2015GL066277&partnerID=40&md5=d8054b73362a10a324620fbfc4adc4e7
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8099
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: CFSA, Physics Department, University of Warwick, Warwick, United Kingdom
Recommended Citation:
Hush P.,Chapman S.C.,Dunlop M.W.,et al. Robust statistical properties of the size of large burst events in AE[J]. Geophysical Research Letters,2015-01-01,42(21).