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Fig. 18 | Earth, Planets and Space

Fig. 18

From: Tools for the efficient analysis of surface waves from active and passive seismic data: exploring an NE-Italy perilagoon area with significant lateral variations

Fig. 18

Beligna#1—multi-offset passive data (T component): a small part of the recorded traces (14 s window); b normalized mean amplitude spectra (15% spectral smoothing) (color changes from green to blue as we move along the array); c standard deviations computed for all the twelve traces. The larger amplitude of the first traces is apparent from all the three graphs (three different ways to assess the mean microtremor amplitude)

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