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西方的通讯社在报道破坏性地震时,常常引用“里克特震级”几级几级,本文叙述了在不同时期所谓“里克特震级”具有不同的含义。在1945年以前主要是指M_L—里克特原始震级,系用乌德—安德森氏标准地震仪测定者;1954年古登堡—里克特合著《地球地震活动性》一书大量发行之后,所谓里克特震级在大多数情况是折合为面波震级M_s;1958年里克特著“地震学基础一书所附震级系以M_s与体波震级m用加权平均的办法求得的,比
Western news agencies often quote “Rickett Magnitude” when reporting destructive earthquakes. This article describes the different meanings of Rickett Magnitude in different periods. Before 1945, it mainly refers to the original magnitude of M_L-Richter, measured by the Uder-Andersen standard seismograph; in 1954, Gutenberg-Ricote co-authored a large number of books entitled “Earthquake Activity” , The so-called Rickett Magnitude in most cases is equivalent to the surface wave magnitude M_s; 1958 Ricket a "seismological foundation attached to the magnitude of M_s and body wave magnitude m by weighted average method was obtained, ratio