Abnormal geophysical and seismotectonic processes observed during the period of preparation and development
of the earthquake with a magnetude of 8,8 in Maule 2010 (Chile)
© L.E. Sobisevich, V.I. Starostenko, E.A. Rogozbyn, A.I. Lutikov,
A.L. Sobisevich, Ê.H. Kanonidi, A.V. Kendzera, M.I. Orlyuk, 2016
Focal zone, basic shock, jerking of strongest aftershocks and progress of seismic energy release during the aftershock process of the
earthquake Maule 27.02.2010 (Ìw=8,8) in Chile have been analyzed. Macroseismic manifestations, tectonic position of the focus
and reconstruction of acting plane position in the focus have been considered. Geophysical treatment of anomalous gravimagnetic
disturbances and seismic precursors induced in variations of magnetic field and geoacoustic fields of the Earth during preparation of the
basic shock and of three strongest iterative shocks on March 11-16 2010 has been done for the first time. It has been shown that application
of present-day cosmic observations, which allow to analyze gravity disturbances (so far only coseismic), reflected on the Earth's surface
makes possible to consider the precursors of seismic shocks of the earthquake Maule and other seismic events in a new way. Long-, middle- and
short-term approaches to prognostication of strong seismic events both on land and sea have been stated.
Key words: seismic activity, earthquake, focus, fluids, anomalous geophysical, seismological and seismotectonic processes, epicenter,
aftershocks, gravimagnetic perturbations.
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