Fig. 4 | Nature Communications

Fig. 4

From: Dynamic strain determination using fibre-optic cables allows imaging of seismological and structural features

Fig. 4

DAS record conversion to seismic data. True amplitude spectra of displacements of 1 h (20.03.2015 5:00-06:00) noise record for DAS (green), geophone (natural frequency of 4.5 Hz, blue) and broadband (flat amplitude response between 0.008 and 100 Hz, red) records, respectively, after instrumental corrections (Methods: Instrumental correction of records from the iDAS system)

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