全国环境剪应力场动态变化与强震活动研究

Abstract

Abstract: In this paper, using two methods to calculate seismic shear-stress strength f₀ obtained by Chen and others from the relation between short period body wave magnitude m_b, seismic moment M₀ and environmental shear-stress value in a thorough study of the characteristics of source spectrum and surface wave magnitudeM_S of moderate and small events, the authors calculated the relative shear-stress strength value f₀ in seismic source from the earthquakes with m_b ≥ 3.8 and M_S ≤ 5.9 occurred from 1993 to January, 1998 in China, determined the high-value distribution area of environmental shear-stress field, studied the correlation between the high-shear-stress distribution area and major active faults and strong seismicity, and forecasted strongly seismic risk areas and their risk in the coming 1~3 years in China.

Key words: Earthquake forecast, Environmental shear-stress field, Dynamic variation, Strong seismicity

Wang Shaojin, Long Xiaofan. RESEARCH ON RECENT DYNAMIC VARIATION IN ENVIRONMENTAL SHEAR-STRESS FIELD AND STRONG SEISMICITY IN CHINA[J]. EARTHQUAKE, 1999, 19(3): 239-244.

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RESEARCH ON RECENT DYNAMIC VARIATION IN ENVIRONMENTAL SHEAR-STRESS FIELD AND STRONG SEISMICITY IN CHINA

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