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Yield estimation of Indian nuclear tests of 1998

机译：1998年印度核试验的产量估算

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We explain below why we consider the arguments put forward by Douglas et al., while commenting on the papers by Sikka et al. and Roy et al.5 regarding yield estimation of Indian nuclear tests of 11 and 13 May 1998, as inappropriate. The data used in their calculations comprise log(A/T) values of P-waves available from some non-Indian stations and Hyderabad station in India, corresponding to Indian explosions of 1974 (POKI) and 11 May 1998 (POK2). Of these, some estimates are made by Douglas et al. and the remaining estimates are accepted as such from the NEIC and ISC bulletins. It may be noted that Douglas et al. have observed that some of the reported values to NEIC and ISC were incorrect. An independent surface wave magnitude estimate using data from XAN (China, 32.6 deg) and NIL (Pakistan, 6.6 deg) has also been reported by the authors without mentioning any details of the signals and the relation used for the Ms estimation at NIL, which showed highly attenuated Rayleigh and Lg waves. On the other hand, the seismogram of Bhopal, India at a distance similar (6.3 deg) to that of NIL, showed strong surface waves (see figure 2 of Roy et al.5). One possible reason for the low estimate of Douglas et al. is that proper path effects are not taken into account by them for Ms estimation. The Ms estimate of Douglas et al. from the two stations differs from the NEIC reported estimate (four observations) and the estimate made by us (six regional observations). Douglas et al. have further reported that the maximum yield of POK2 is - 40 kt, whereas this value according to their calculations corresponds to the average value of the yield. The maximum value of the yield according to the calculations of Douglas et al. is in fact - 110 kt.
机译：下面我们在解释Sikka等人的论文时，解释为什么我们考虑Douglas等人提出的论点。 Roy等[5]认为不合适的是1998年5月11日至13日印度核试验的产量估算。计算中使用的数据包括可从印度的一些非印度站和海得拉巴站获得的P波的log（A / T）值，分别对应于1974年（POKI）和1998年5月11日（POK2）的印度爆炸。其中，Douglas等人进行了一些估算。 NEIC和ISC公告也接受了其余估算。可以注意到，Douglas等。已经观察到向NEIC和ISC报告的某些值不正确。作者还报告了使用来自XAN（中国32.6度）和NIL（巴基斯坦6.6度）数据的独立表面波幅度估计，但没有提及信号的任何细节以及用于NIL的Ms估计的关系。表现出高度衰减的瑞利波和Lg波。另一方面，印度波帕尔的地震图（与NIL相似）（6.3度）显示出很强的表面波（参见Roy等人的图2）5。道格拉斯等人的估算值偏低的一个可能原因。估计Ms时没有考虑适当的路径效应。道格拉斯等人的Ms估计。这两个站的观测值与NEIC报告的估算值（四个观测值）和我们所做的估算值（六个区域观测值）不同。道格拉斯等。进一步报道，POK2的最大产量为-40 kt，而根据他们的计算，该值对应于产量的平均值。根据Douglas等人的计算，产量的最大值。实际上是110 kt。

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