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本文从应用的角度出发,分析讨论了地震波衰减时间τ与震级和震中距△之间的关系,给出了特定条件下的尾波震级公式 M_τ=1.83+2.384logτ+0.001△在此基础上加以推广,得到了适合于在一定区域(台网)内普遍使用的尾波震级公式 M_τ=0.342+2.363logτ-0.445logV+0.001△,并之标准化 M_τ=2.363logτ-R。文章最后还将尾波震级M_τ与近震震级M_(?)进行比较,给出了换算公式。
In this paper, the relationship between the attenuation time τ of seismic waves and the magnitude and the epicentral distance △ is analyzed and discussed from the application point of view. The formula of the magnitude of the coda under specific conditions is given as M_τ = 1.83 + 2.384logτ + 0.001Δ. On this basis, The coda magnitude formula M_τ = 0.342 + 2.363logτ-0.445logV + 0.001 △, which is suitable for common use in a certain area (network), was obtained. The standardization M_τ = 2.363logτ-R was obtained. Finally, the paper also compares the wake magnitude M_τ with the magnitude M_ (?) Of near earthquakes, and gives the conversion formula.