论文部分内容阅读
本文以美国MILROW事件(当量为IMT)为例,简单地介绍了处理地下核爆近场强地面运动资料的方法和结果。场地附近地壳分层结构的P波部分是用钻探和地震方法测定的,而S波部分则是根据近场记录资料中的面波来确定。本文使用广义反射、透射系数矩阵和离散波数方法计算地壳介质的响应函数。该方法比DWFE法计算速度快约10倍左右。地下核爆的震源函数可以用形如ψ(t)=ψ∞〔1—e~(-Kt)(1+Kt+1/2kt)~2-B(Kt)~3〕的折合位移势函数来描述。对于MILROW事件的研究结果表明该事件可用一个等效的爆炸点源来描述,其震源参数为:φ∞=1.7×10~(11)厘米~3,K=9.0,B=1.0。文中还介绍了对于复杂事件,如BOX CAR可用以一个爆炸点源和一个地震震源的复合模式来解释。
Taking the MILROW incident in the United States (IMT equivalent) as an example, this paper briefly introduces the methods and results of dealing with strong ground motion data in the near field of nuclear explosion. The P wave part of the crustal crustal structure near the site is measured by drilling and seismic methods, while the S wave part is determined based on the surface wave recorded in the near field. In this paper, the generalized reflection, transmission coefficient matrix and discrete wave number method are used to calculate the response function of crustal media. This method is about 10 times faster than DWFE method. The hypocenter function can be expressed as a displacement potential function in the form of ψ (t) = ψ∞ [1-e ~ (-Kt) (1 + Kt + 1 / 2kt) ~ 2-B (Kt) ~ 3] To describe. The results of the MILROW event show that the event can be described by an equivalent source of explosion with source parameters of φ∞ = 1.7 × 10 ~ (11) cm ~ 3, K = 9.0 and B = 1.0. The article also explains complex conditions such as BOX CAR which can be explained by a composite model of an explosion source and an earthquake source.