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引言在多年的实践中,人们在描述地震活动性时已习惯于应用两个指标,一个是地震活动频度,一个是地震活动强度。但是由于这两个指标的物理含义明显不同,所得的结果往往差异很大。因为,用地震能量来描述地震活动性时,大家知道,用M_s震级相差一级,能量相差31.62倍,震级差两级则能量相差千倍。用M_L震级其能量差更大。其结果是大地震
Introduction In many years of practice, people have become accustomed to applying two indicators in describing seismicity, one is the frequency of seismic activity and the other is the intensity of seismic activity. However, as the physical implications of these two indicators are significantly different, the results obtained often differ widely. Because, with seismic energy to describe seismicity, we all know that with M_s magnitude difference of 31.62 times the energy difference between the two levels of magnitude is a thousand times the energy difference. M_L magnitude with its energy difference greater. The result is a big earthquake