Easy HVSR > Introduction

Introduction Easy HVSR

Easy HVSR is a GeoStru software for the analysis and archiving of ambient noise in the three orthogonal directions at a single station, according to the well known technique of Nakamura.

The software is able to read the recorded traces in various formats commonly used by the technological tools on the market, such as, for example, SEG2, SEGY and DTA.

From the imported recordings an analysis in the time domain can be carried out to verify the reliability of the recording itself, to move then on to the analysis in the spectral domain.

In the second stage decisions are made in order to obtain reliable results, and then obtain the evaluation of the natural frequency of vibration of the stratigraphy present in situ, with an estimation of the profile of the shear waves velocity with depth, supported by implementing an automatic search of stratigraphic characteristics, and so the subsequent estimation of Vs30.