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

Geoscience Letters

Official Journal of the Asia Oceania Geosciences Society (AOGS)

Table 5 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 sample lengths

Sample length	PSM	MEM	HAM	MCCA
100	0	30	100	98
150	0	64	99	100
200	49	78	100	100
250	100	86	100	100
300	92	91	100	100
350	96	95	100	100
400	34	96	100	100
450	100	100	100	100
500	100	100	100	100

Sample length	PSM	MEM	HAM	MCCA
100	0	30	100	98
150	0	64	99	100
200	49	78	100	100
250	100	86	100	100
300	92	91	100	100
350	96	95	100	100
400	34	96	100	100
450	100	100	100	100
500	100	100	100	100

Sample length	PSM	MEM	HAM	MCCA
100	0	30	100	98
150	0	64	99	100
200	49	78	100	100
250	100	86	100	100
300	92	91	100	100
350	96	95	100	100
400	34	96	100	100
450	100	100	100	100
500	100	100	100	100

Sample length	PSM	MEM	HAM	MCCA
100	0	30	100	98
150	0	64	99	100
200	49	78	100	100
250	100	86	100	100
300	92	91	100	100
350	96	95	100	100
400	34	96	100	100
450	100	100	100	100
500	100	100	100	100