HoliSurface - New Software Application for Seismic Exploration
HoliSurface is a new software application for seismic exploration via joint analysis of active and passive data obtained through acquisition procedures extremely simple and efficient fundamentally based on the smart exploitation of all the data that can be obtained through a mindful use of a single 3-component geophone (and little more).
The software HoliSurface employs an innovative methodology - patent granted on 01.04.2015 - and has been created to fully exploit everything you can do with just one 3-component geophone: Rayleigh and Love waves Group velocities analysis (radial and vertical component) according to FVS (Full Velocity Spectrum) approach, HVSR analysis, MAAM (Miniature Array Analysis of Microtremors) analysis, Vs profile reconstruction, vibration measurements.
The word HoliSurface (briefly HS) is composed by Holistic and Surface and means that the purpose of the method/software is to analyze the propagation of surface waves in a complete way, namely holistic (from Greek ?λος, "totality").
Acquiring a dataset useful for HoliSurface analysis is not much different than traditional acquisitions of active seismic aimed, for example, at performing MASW or refraction analysis (the zero time is set by the trigger). The substantial difference is that, to perform HoliSurface analysis, you have to use only a single 3-component geophone (3C - also said 3D because it is a geophone with three sensors oriented in three spatial orthogonal directions) whose orientation is fundamental. The key point is that the second trace of the output file must represent the radial component (namely the direction that is the axis combining/joining the source and the geophone). To correctly perform HoliSurface analysis will be, therefore, necessary to set the NS of the 3-component geophone radial respect to the source.