The Sun - Earth problem: modern concepts and physical mechanisms

1Miroshnichenko, LI
1Pushkov Institute of Terrestrial Magnetism, Ionosphere and Propagation of Radio Waves of the Russian AS, Troitsk, Russia
Kosm. nauka tehnol. 2011, 17 ;(1):17-22
https://doi.org/10.15407/knit2011.01.017
Publication Language: Russian
Abstract: 
We present a brief review of modern concepts for the Sun - Earth problem and proposed physical mechanisms of solar-terrestrial relations (STR). This field covers a wide range of fundamental and applied problems of paramount importance (space weather, radiation hazard in space, operation of space-borne and ground-based technological systems, heliobiology, etc.). Besides, it is closely connected with some general gnosi-ological problems (Weltanschauung). State-of-the-art information on existing problems is given and different channels for extraterrestrial influences are discussed at the up-to-date level: electromagnetic waves and fields, total solar irradiance, solar wind, energetic solar particles, galactic cosmic rays, cosmic dust, etc.
           Some of well-known and suggested STR effects and corresponding physical mechanisms are illustrated by several examples. In particular, we consider a number of different external «signals» in observed changes of terrestrial climate and weather. Especially, we analyse an expected impact of geophysical disturbances on the accuracy of some precise physical measurements and experiments. Due attention is paid to the heliobiological aspects of STR. Specifically, it is emphasized the multifactor nature of magneto-biological effect (MBE), its non-stationary and non-linear behaviour. We discuss the main features of different physical mechanisms (electromagnetic fields, ionising radiation, triggers, rhythmic and resonances in solar-terrestrial systems) and their applicability to the Sun - Earth problem. Most of them are still needed in more sophisticated theoretical development and experimental confirmation. The main goals of interdisciplinary studies in this field are to determine partial impacts of solar-geomagnetic variability on the terrestrial environments and to estimate (separate) relative contributions of different factors into various STR phenomena.
Keywords: heliobiology, solar-terrestrial relations, space weather
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