PROBLEMS OF GEOCOSMOS

Proceedings of the 7th International Conference "Problems of Geocosmos" (St. Petersburg, Russia, 26-30 May 2008)
Also we see feature in dynamics of chaotic component of temperature: its sharp declining begins in
area of 1960 (Fig. 4a). Simultaneously we see an appearance of correlation between an average amplitude of
Ap-index and T near 1960 year (Fig.4b and Fig.4c).). We see low correlation till 1960 and after 1960 high
correlation (see also Fig. 5b)
What happens? What has occurred in dynamics of geospheres (correlation between magnetosphere
activity and air temperature after 1960)? How this phenomenon can be explained?
Correlation in dynamics of the fractal dimensions of the investigated series was found. Feature near
1960 year in dynamics of the Sun activity chaotic component and the magnetospheric activity also was
found. The dynamics of the air temperature does not correlate with dynamics of the magnetosphere activity
till 1960 and high correlation is observed after 1960.
First hypothesis: The change of a spectral structure (Hurst exponent) and burst of amplitude of
chaotic mode of the Sun activity was near 1960. It has led to change of the geospheres dynamics character.
The phenomenon can be interpreted as the noise induced phase transition in the Earth’s system.
Second hypothesis: The technogenic influence on geospheres connected with a significant
intensification of nuclear tests and the beginning of a space age has sharply increased in area of 1960. There
is other possible reason of effect of correlation changes between temperature and magnetic field in this
situation, namely, influence of the anthropogenous factor.
Analysis: other geospheres. We find the features in dynamics of parameters of other geospheres in
area of 1960 (Fig. 5 and Fig. 6). We used our results (Fig. 5b and Fig. 5c) and the published information
(data, plots) for an illustration of the phenomenon 1960. We have changed appearance of some plots in
comparison with originals, but have not changed their information.
We see features in other geospheres dynamics in area 1960 year (Fig. 5 and Fig. 6).
Fig. 5. a - global nuclear testing [npc.sarov.ru/issues/testing.html], b - correlation coefficient Ccor between
average amplitude of Ap-index and T, c - global seismic activity M > 6, d - parameter of chaos in E-layer of
ionosphere [Givishvili and Leschenko, 1998]
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