A simplemodel for the solar cycle

被引：28
作者：
Pontieri, A
Lepreti, F
Sorriso-Valvo, L
Vecchio, A
Carbone, V
机构：
[1] Univ Calabria, Dipartimento Fis, I-87036 Arcavacata Di Rende, CS, Italy
[2] Ist Nazl Fis Mat, Unita Cosenza, Cosenza, Italy
来源：
SOLAR PHYSICS | 2003年 / 213卷 / 01期
关键词：
D O I：
10.1023/A:1023227503176
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
A simple nonlinear model which describes the 11-year solar cycle can be derived from the usual alpha-omega dynamo theory in the form of a Van der Pol equation. Solar activity displays also small-scale inter-cycle persistent stochastic oscillations with a Hurst exponent of the order of Hsimilar or equal to0.76+/-0.01. The results obtained from the Van der Pol oscillator superimposed on a fractional Brownian motion which describes the stochastic fluctuations are presented.
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页码：195 / 201
页数：7
相关论文
共 10 条
  • [1] BRACEWELL RN, 1953, NATURE, V133, P512
  • [2] JUNEJA A, 1995, THESIS YALE U
  • [3] HURST ANALYSIS OF MT-WILSON ROTATION MEASUREMENTS
    KOMM, RW
    [J]. SOLAR PHYSICS, 1995, 156 (01) : 17 - 28
  • [4] Persistence of solar activity on small scales:: Hurst analysis of time series coming from Hα flares
    Lepreti, F
    Fanello, PC
    Zaccaro, F
    Carbone, V
    [J]. SOLAR PHYSICS, 2000, 197 (01) : 149 - 156
  • [5] SOME LONG-RUN PROPERTIES OF GEOPHYSICAL RECORDS
    MANDELBR.BB
    WALLIS, JR
    [J]. WATER RESOURCES RESEARCH, 1969, 5 (02) : 321 - &
  • [6] Simple model of a stochastically excited solar dynamo
    Mininni, PD
    Gomez, DO
    Mindlin, GB
    [J]. SOLAR PHYSICS, 2001, 201 (02) : 203 - 223
  • [7] Stochastic relaxation oscillator model for the solar cycle
    Mininni, PD
    Gómez, DO
    Mindlin, GB
    [J]. PHYSICAL REVIEW LETTERS, 2000, 85 (25) : 5476 - 5479
  • [8] LONG-TERM PERSISTENCE OF SOLAR-ACTIVITY
    RUZMAIKIN, A
    FEYNMAN, J
    ROBINSON, P
    [J]. SOLAR PHYSICS, 1994, 149 (02) : 395 - 403
  • [9] Sokoloff D.D, 1983, MAGNETIC FIELDS ASTR
  • [10] Stix M., 1991, SUN INTRO
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