Table 6 Main descriptive parameters and Fourier frequency results of the ODP Site 846 SST subcomponents isolated from the detrended comp-1 and comp-2 by singular spectrum analysis. The processing of the subcomponents was made in order to better separate and estimate the variance fraction of specific frequency bands from still complex data components. The italicized percentage numbers are the absolute variance of the subcomponents (referred to the total SST variance)
SST comp. rank | SST comp. variance (%) | SST subcomp. rank and var. (abs.) | SST subcomp var. (rel.) (%) | SST subcomp var. (abs) (%) | Frequency (kyr−1) | TISA power (%) | Period (kyr) | Forcing | |
|---|---|---|---|---|---|---|---|---|---|
1 | 87.8 | exp.fit | 87.2 | 76.6 | – | – | – | Long-term trend | |
detrend 12.8% (11.2%) | 1 | 49.6 | 5.56 | 0.0002758 | 40.6 | 3626 | Earth’s orbit secular frequency | ||
0.0007313 | 51.9 | 1367 | Obliquity modulation cycle | ||||||
0.0012092 | 7.5 | 827 | Eccentricity (long) | ||||||
2 | 25.1 | 2.81 | 0.0024667 | 70.3 | 405 | ||||
0.0033343 | 29.7 | 300 | Earth’s orbit secular frequency | ||||||
3–11 | 25.4 | 2.84 | 0.0033896 | 15.4 | 295 | ||||
0.0051716 | 45.0 | 193 | Obliquity modulation cycle | ||||||
0.0067394 | 6.7 | 148 | |||||||
0.0073694 | 9.2 | 136 | Eccentricity (short) | ||||||
0.0079678 | 14.0 | 126 | |||||||
0.0104995 | 9.7 | 95 | |||||||
2 | 5.2 | 1–4 | 70.2 | 3.65 | 0.0105084 | 43.2 | 95 | Eccentricity (short) | |
0.0144299 | 56.8 | 69 | |||||||
5–8, 11–15 | 24.5 | 1.27 | 0.0079524 | 39.8 | 126 | Transition obliquity to short eccentricity | |||
0.0187962 | 60.2 | 53 | |||||||
9–10 | 5.2 | 0.27 | 0.0220179 | 62.2 | 45 | Obliquity | |||
0.0244820 | 37.8 | 41 | |||||||