Nonlinear variability of SYM-H over two solar cycles

被引：18
|
作者：
Wanliss, JA [1 ]
机构：
[1] Embry Riddle Aeronaut Univ, Dept Phys Sci, Daytona Beach, FL 32114 USA
来源：
EARTH PLANETS AND SPACE | 2004年 / 56卷 / 12期
关键词：
SYM-H; fractals; nonlinear; space weather; indices; geomagnetism; Dst; prediction;
D O I：
10.1186/BF03352507
中图分类号：
P [天文学、地球科学];
学科分类号：
07 ;
摘要：
Fractal fluctuation analysis is applied to ground-based SYM-H data during quiet times and during magnetic storm times spanning two solar cycles between 1981-2002. On the basis of Kp, intervals were selected that corresponded to quiet and active magnetospheric dynamics. A nonlinear detrended fluctuation analysis (DFA) was applied to monitor nonlinear variability over the solar cycles. We find significant variations in nonlinear statistics between quiet and active intervals, which indicates a difference in statistical variability for quiet times, and storm times.
引用
收藏
页码：E13 / E16
页数：4
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