瞬变波（transient wave）：相对于时间平均气流而变化及移动的大气扰动。 通常把瞬变波动粗略的分为高频（一周以内）和低频（10天以上）两部分。
Theanalysis shows that both the quasi stationary and transient wave mean interactions areresponsible for the fluctuations of the AO.
结果发现,平流层准定常波和对流层瞬变波引起的波流相互作用与AO形成间都存在着因果关系。
参考来源 - 下边界条件对北极涛动影响的数值模拟研究·2,447,543篇论文数据，部分数据来源于NoteExpress
冷事件时定常波和瞬变波相互抵消的局地特征也依然存在，但瞬变波的影响有所增强。
During cold episode there is still some compensation of the stationary eddy heat transports by the transient eddy, while impacts of the transient eddy are somewhat enhanced.
本文利用两层斜压准地转模式，在低谱简化下，得到一个热力强迫波，瞬变波与纬向气流相互作用的非线性方程组。
Using a low order, two-layer baroclinic quasi-geostrophic model, a nonlinear system including the interaction between a thermal forced wave, a transient wave and zonal flow is studied.
并结合管道瞬变模型法与负压波法建立多维判别法则，解决输油管道泄漏检测及漏点定位的问题。
By combining the transient change model method and rarefaction wave method, the multidimensional rules to detect the leakage and locate the leak point were set up.
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