Gs. Kurbasova et al., STATISTICAL CORRELATIONS BETWEEN 10-YEAR VARIATIONS OF ANNUAL MEAN GEODYNAMICAL, GEOPHYSICAL, AND HELIOPHYSICAL DATA, ASTRONOM ZH, 74(1), 1997, pp. 139-145
Variations with period T=10.4+/-0.3 yr are identified in annual mean d
ata on the polar coordinates of the Earth, variations in the length of
the day, relative sunspot numbers, integrated seismic energy, and sou
thern oscillation index. Linear phase filtering and autoregression ana
lysis were used to detect and compare these oscillations. There is som
e evidence for synchronization of solar sunspot formation and variatio
ns in the Earth's polar co-ordinates and the length of the day. The po
ssible influence of sunspot formation on variations in the southern os
cillation index and of the integrated seismic energy is discussed.