ИСТИНА

SYNCHRONISM AND CYCLICITY OF THE GEOPHYSICAL AND GEODYNAMICAL PROCESSES Yu. V. Barkin Sternberg Astronomical Institute, Moscow State University barkin@sai.msu.ru/Fax: +7-095-9328841 Many geophysical and geodynamical processes: seismic, volcanoes and geyser activities, atmospheric, oceanic, and climatic changes (El Nino, La Nina phenomena), sea level changes (variations of the Caspian Sea and Yellow River level, and oth.), variations of the Earth physical fields, variations of the diurnal rotation and pole motion of the Earth, of the solar activity, of the biosphere and nоosphere activity, of the social activity, and many other display correlations on different timescales. Practically all the processes are characterized (however, to a different extent) by quasi-diurnal, semi-diurnal, and decade variations with periods of 22.2, 11.1, 18.6, 31, 38, 72 years and others. The goal of this report is to show that a single mechanism of the celestial-mechanics nature determines the above-mentioned variations with a definite frequency basis, namely the mechanism of the displacements of the Earth’s upper and lower envelopes (with a boundary at 670 km), due to their eccentric positions, attraction of the Moon, Sun and planets, and the Earth rotation. The frequency basis of the oscillations contains combinations of the frequencies of the lunar-orbit theory and Earth rotation. Displacements of the lower envelope influence the crackle net of the upper mantle and control the migration of its fluids. This mechanism explains also the asymmetry and mirror phenomena of the seismic, volcanic, and geyser activities in the opposite hemispheres of the Earth. Barkin Yu.V. (2000) S// XXV General Assembly of EGS (Nice, France 25-29 April 2000) News Letter European Geophysical Society, N74, March 2000. Scientific Programme/ 2000. P. 265.