This article describes the development of scaling relations between seismic moment and rupture area of earthquakes in stable continental regions (SCRs). The article reviews the relations developed by Somerville and compares them with relations developed by other investigators. It also compares the scaling relations of SCR earthquakes with those in tectonically active continental regions (TCRs). Three different methods of estimating rupture area, based on aftershocks, slip models, and duration methods were used by Somerville to analyze the relation between seismic moment and rupture area, using earthquake source parameters compiled from published literature. For each category of data, the relations obtained were not significantly different from those obtained by constraining them to be self-similar (scale-invariant), so self-similar relations were adopted. The stress drops corresponding to these scaling relations range from 51 to 86 bars, with an average of 65 bars. This value is comparable with the value of 58 bars obtained by Leonard, and it is recommended that the Leonard scaling relations for SCR earthquakes be used for the NGA East Project. To a first approximation, the results of Somerville and those of Somerville et al. indicate that the rupture areas of SCR earthquakes are about half those of TCR earthquakes, and their stress drops are about 2.8 times higher. Allmann and Shearer find less of a difference, presumably because their intraplate category includes some earthquakes that we would assign to TCR instead of SCR. Their study indicates that the rupture areas of intraplate earthquakes are about two-thirds those of TCR earthquakes, and their stress drops are about 2 times higher.

本文介绍了稳定大陆地区（SCR）地震矩与地震破裂面积之间比例关系的发展。本文回顾了萨默维尔开发的关系，并将其与其他研究人员开发的关系进行了比较。它还比较了SCR地震与构造活跃大陆地区（TCR）的尺度关系。Somerville使用余震，滑动模型和持续时间方法三种不同的估算破裂面积的方法，利用已发表文献中汇编的地震震源参数来分析地震矩与破裂面积之间的关系。对于每种类别的数据，所获得的关系与通过将它们约束为自相似（尺度不变）而获得的关系没有显着差异，因此采用了自相似关系。与这些比例关系相对应的应力下降范围为51至86 bar，平均为65 bar。该值可与伦纳德获得的58巴的值相提并论，建议将SCR地震的伦纳德比例关系用于NGA东部项目。初步估算，萨默维尔和萨默维尔等人的结果。这表明SCR地震的破裂面积大约是TCR地震的破裂面积的一半，其应力降大约是2.8倍。Allmann和Shearer所发现的差异较小，大概是因为它们的板内类别包括一些我们应分配给TCR而不是SCR的地震。他们的研究表明，板内地震的破裂面积约为TCR地震的破裂面积的三分之二，