Guralp Systems ART - Manual (Page 33)

User guide
32. average spectral period (or frequency) defined by
Rathje et al. (2004): .
33. PGV/PGA in seconds (or Hz) (the ratio is computed
using ms -1 for PGV and ms -2 for PGA), which gives an
indication of the period (or frequency) content of the
time-history;
At the top of this window there is a menu entitled ‘File’ with
three options: ‘Save figure’, which saves a copy of the window
as a graphics file (in .bmp, .eps, .jpg, .png or .tif format);
‘Print figure’, which prints a copy of the window; and ‘Export
values’, which exports the strong-motion parameters to a text
file in a space-delimited format.
Also given as a header to the strong-motion parameter table (if
the ‘Display metadata’ option is selected in the ‘Options’
window) are the basic earthquake, station and waveform
metadata corresponding to the selected time-history (if
available).
A typical strong motion analysis screen is shown overleaf.
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