Geopsy: H/V and Spectrum Toolboxes: Processing Tab

Processing tab giving access to smoothing, parameters (for windows) and how is processed the H/V (available only for H/V computing)

Here are described the different possibilities offered in this tab. This tab is divided in two areas:

-Parameters area

-Horizontal components

Parameters area

Processing tab giving access to smoothing, parameters (for windows) and how is processed the H/V (available only for H/V computing)

In this area, common for H/V and Spectrum computing, is divided in three different parts with three different objectives :

• fixing which smoothing will be applied to the windows (2 first lines).

During the computing of H/V or Spectrum, the Fourier spectra can be smoothed (it is strongly recommanded) in the goal to clarify the global aspect of the curves. For Spectrum, each Fourier spectra (coming from a window) is smoothed and then the averaged curve is computed. For H/V, the horizontal Fourier spectra (NS and EW, coming from a synchronous window) are

Here, one can fix the use or not of a smoothing

• fixing the use or not of a cosine taper on the individual window each window has to be tapered in the goal to reject

Horizontal components

that indicate how the H/V is computed

Konno K. and T. Ohmachi, 1998. Ground motion characteristics estimated from spectral ratio between horizontal and vertical components of microtremors. Bull. seism. Soc. Am., 88-1, 228-241