INﬂUENCE OF SNOW ON PARAMETERES OF ELASTIC WAVES INDUCED IN THE ICE COVERING
The physical modeling resultsdemonstrate the ability to diagnose instability of abovegroundpipelinesupports using acoustic noiserecorded on the pipe surface. It is shown that developed in recent years method of extraction coherent components of noise ﬁeld allows to determine frequencies and geometric shapes of ﬂexural standing waves in pipelines. This information can be used to estimate the stabilityof pipeline supports. Supportinstabilityincreasing the span between rigid pipeattachments manifests itself in a dramatic restructuring of thestanding waves ﬁeld formed in the pipe by acoustic noise.