Figure 3
From: Lateral Variation of Crustal Lg Attenuation in Eastern North America

A sample seismogram (top) and associated plot record sections (bottom) from a M 3.5 event that occurred in July 2015 to the south of Nova Scotia, before (a) and after (b) the denoising. Associated record sections are presented in (c,d). P arrival and group velocity of 3.6 km/s are marked on the denoised record sections.