L' articolo di Moss:
"Quantifying Measurement Uncertainty of Thirty-Meter Shear-Wave Velocity" BSSA Vol. 98, No. 3, pp. 1399–1411, June 2008

Results of this study indicate that uncertainty of shear-wave velocity measurements are on the order of 1%–3% coefficient of variation (standard deviation/mean) for downhole, suspension logging, and seismic cone penetration testing, 5%–6% coefficient
of variation for spectral analysis of surface waves

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