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Preliminary Discussion On Earth's Natural Hazard System

LI De-wei(a.Faculty of Earth Sciences;b.Center for Serious Geological Hazard, China University of Geosciences,Wuhan 430074,China)  
Solid,liquid and gas material in opening Earth system move in different cycles drived by strong thermal energy from the Earth core and the Sun.Fluid movement is main factor of Earth material movement.Heterogeneous thermal structure in the Earth results in heterogeneous flow of fluid that related to solid-liquid-gas coupling,celestrial body-Earth coupling,internal Earth-atmosphere coupling,ocean-continent coupling,and basin-orogen coupling.Fluid movement produces energetic chain,material chain,structural chain,event chain,resource chain,disaster chain,and environmental chain.Thermal energy and relative gravitation,stress,and so on act on some special areas in which form many natural disasters that are related to mechanism,space-time and warning signs.Disasters can be predicted by space-time structure of disaster chain and anomalies which shows relative mechanism.Then the natural disasters can be prevented effectively.Thermal anomaly areas are identical with main disaster areas.Systematic exploitation of geothermal energy and gas on suitable tectonic areas can effectively reduce disaster and emission,and radically improve energy structure and eliminate energy crisis.
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