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| 概要 |
The earth's foreshock is a region where particularly large amplitude MHD waves are commonly observed.They exhibit various waveforms, suggesting that nonlinear interaction between the waves is in progr...ess. We introduce a method to quantitatively evaluate the strength of phase coherence among the waves from a given time series data. Besides we develop our method by applying wavelet filtering technique. From the analysis it was found that, although the turbulence is consisted of waves with a wide range of plasma rest frame frequnecies, only those frequencies lower than the ion gyrofrequency are responsible for generating the phase coherence.続きを見る
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Mendeley出力
