Author:
Cersosimo D. O.,Wanliss J. A.
Abstract
Abstract
We investigate the statistical properties of high-latitude magnetometer data for differing geomagnetic activity. This is achieved by characterizing changes in the nonlinear statistics of the geomagnetic field, by means of the Hurst exponent, measured from a single ground-based magnetometer station. The long-range statistical nature of the geomagnetic field at a local observation site can be described as a multifractional Brownian motion, thus suggesting the statistical structure required of mathematical models of magnetospheric activity. We also find that, in general, the average Hurst exponent for quiet magnetospheric intervals is smaller than that for more active intervals.
Publisher
Springer Science and Business Media LLC
Subject
Space and Planetary Science,Geology
Reference25 articles.
1. Bartels, J., Discussion of time variations of geomagnetic indices Kp and Ap, Ann. Geophysicae, 19, 1, 19323–19361, 1963.
2. Burlaga, L. F., Multifractal structure of the interplanetary magnetic field, Voyager 2 observations near 25 AU, 1987–1988, Geophys. Res. Lett., 18(1), 69, 1991.
3. Burlaga, L. F. and W. H. Mish, Large-Scale fluctuation in the interplanetary medium, J. Geophys. Res., 92, A2, 1261–1266, 1987.
4. Consolini, G. and A. T. Y. Lui, Symmetry breaking and nonlinear wavewave interaction in current disruption: Possible evidence for a phase transition, in Magnetospheric Current Systems, Geophys. Monogr. Ser., vol. 118, edited by S.-I. Ohtani et al., p. 395, AGU, Washington, D. C, 2000.
5. Daglis, I. A., J. U. Kozyra, Y. Kamide, D. Vassiliadis, A. S. Sharma, M. W. Liemohn, W. D. Gonzalez, B. T. Tsurutani, and G. Lu, Intense space storms: Critical issues and open disputes, J. Geophys. Res., 108, A5 1208, 2003.
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