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Official Journal of the Asia Oceania Geosciences Society (AOGS)

Fig. 3 | Geoscience Letters

Fig. 3

From: Correlation-aided method for identification and gradation of periodicities in hydrologic time series

Fig. 3

The periodicity identification efficiency (IE) of four methods power spectrum method (PSM), harmonic analysis method (HAM), maximum entropy method (MEM) and moving correlation coefficient-based analysis (MCCA) under different periodic component parameters a half-amplitude B (the abscissa axis M refers to the coefficient and larger M means larger amplitude); b length of periodicity T and c initial phase t0

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