Skip to main content

Official Journal of the Asia Oceania Geosciences Society (AOGS)

Table 7 The first dominant periodicities detected in the time series of annual runoff in 11 sub-basins in the Yangtze River basin (YRB, excluding Taihu Lake basin) by power spectrum method (PSM), maximum entropy method (MEM), harmonic analysis method (HAM) and moving correlation coefficient-based analysis (MCCA)

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

No.a PSM MEM HAM MCCA Scoreb
1 2, 9, 10, 11, 12, 13 2, 4, 11 8.9, 12.4 9.2 1
2 4, 5, 6, 7, 11, 12 31 29.6 1
3 6, 7, 8, 9, 10, 11, 12 4.8, 7.8, 12 7.5 1
4 7, 8, 9, 10, 12 8.9 9.3 1
5 12–16, 18, 20, 22 3.1, 15.5 24.6 0
6 2, 3, 8, 9, 10, 12 3.1, 15.5 3.1 1
7 2, 24, 26, 28, 30 2 3.6 24.1 1
8 6, 7, 8, 9 6.9, 8.9 6.8 1
9 3, 4 2 21.8 0
10 2 2 6.9 6.7 1
11 2 2 2 1
  1. aThe numbers from top to bottom in “No.” column refer to (1) upper reaches of Jinsha River, (2) lower reaches of Jinsha River, (3) Mintuo River, (4) Jialing River, (5) Wu River, (6) reaches from Yibin to Yichang, (7) Dongting Lake system, (8) Han River, (9) Poyang Lake system, (10) reaches from Yichang to Hukou and (11) reaches below Hukou, respectively
  2. bGive 1 point to MCCA for having corresponding result to at least one method and 0 point for none