SUMMARY

We have reanalysed observations of body waves and surface waves for 71 well-recorded underground nuclear explosions (UNEs) that were conducted between 1977 and 1989 at the Balapan subregion of the Semipalatinsk Test Site in Kazakhstan. To reconcile differences between body-wave and surface-wave amplitudes, we solve for a scaling factor between vertical and horizontal forces in the explosion model. We find that the estimated scaling factor is anticorrelated with the scaled depth of burial for the subset of UNEs at Balapan that have published depths. The observed anticorrelation and the inferred variations in force scaling suggest that recorded surface-wave amplitudes are significantly influenced by UNE burial depth as well as by previously recognized tectonic release. As part of our analysis, we revisit the relationship between teleseismic m_b(P) and yield for UNEs at Balapan, and discuss the physical basis for effectiveness of the m_b–M_S discriminant.

中文翻译：

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地下核爆炸地震源模型中的垂直力缩放

概要

我们重新分析了1977年至1989年在哈萨克斯坦塞米巴拉金斯克试验场的巴拉潘次区域进行的71次记录良好的地下核爆炸（UNE）的体波和面波观测。为了调和体波和面波振幅之间的差异，我们在爆炸模型中求解垂直力和水平力之间的比例因子。我们发现，对于在巴拉潘已经发布深度的UNE子集，估计的比例因子与埋葬的比例深度反相关。观察到的反相关性和推力尺度的推断变化表明，记录的表面波振幅受UNE埋藏深度以及先前公认的构造释放的影响很大。作为我们分析的一部分，我们重新审视了远震与地震之间的关系。_b（P）和Balapan的UNE的产量，并讨论了m _b –M _S判别式有效性的物理基础。