Correlation length of magnetosheath fluctuations: Cluster statistics
نویسندگان
چکیده
منابع مشابه
Statistical Study of Correlation Length of Magnetosheath Fluctuations
The paper presents a statistical study of mutual relationship of ion density and magnetic field fluctuations measured by Cluster near the dusk-dawn meridian at the magnetosheath in the vicinity of the magnetopause. In this region, we have found that the correlation length of such fluctuations does not exceed ≈1 RE in the analyzed frequency range of 0.001–0.125 Hz. The fluctuations have often sh...
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Magnetosheath parameters are usually described by gasdynamic or MHD models but these models cannot account for the most important sources of magnetosheath fluctuations—energetic particles in the foreshock and in the magnetosheath—and thus, the experimental investigation is necessary. Earlier statistical processing of a large amount of magnetosheath observations has shown that the magnetosheath ...
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We investigate the spectral shape, the anisotropy of the wave vector distributions and the anisotropy of the amplitudes of the magnetic fluctuations in the Earth’s magnetosheath within a broad range of frequencies [10−3, 10] Hz which corresponds to spatial scales from ∼ 10 to 10 km. We present the first observations of a Kolmogorov-like inertial range of Alfvénic fluctuations δB ⊥ ∼ f−5/3 in th...
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We report numerical estimates of correlation lengths in 2D Potts models from the asymptotic decay of the cluster-diameter distribution. Using this observable we are able to verify theoretical predictions for the correlation length in the disordered phase at the transition point for q = 10, 15, and 20 with an accuracy of about 1% 2%. This is a considerable improvement over previous measurements ...
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In this work we study experimentally and numerically the temporal width fluctuations obtained in kinetic roughening of single interfaces. This fluctuative behavior, which results from competing mechanisms in the interface growth process, is shown to contain information on the growth process of the specific interface. We define a measure of the temporal interface width fluctuations in order to e...
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ژورنال
عنوان ژورنال: Annales Geophysicae
سال: 2008
ISSN: 1432-0576
DOI: 10.5194/angeo-26-2503-2008