Guralp Systems ART User Manual

Page 42

ART

graph are dotted lines showing the times the energy density
first exceeds the proportions of final normalized energy density
given in the ‘Options’ window (‘Significant Relative (Start)’ and
‘Significant Relative (End)’).

Also shown in this figure (if the ‘Display metadata’ option is
selected in the ‘Options’ window) are the basic earthquake,
waveform and station metadata of the selected time-history.

Multiple time-histories selected
Clicking on this button when two or more time-histories are
selected calculates and displays the energy density plots for all
the selected time-histories on the same graph so that they can
be easily compared (see below). The figure is either displayed
in colour or in monochrome depending on the option selected
by the user within the ‘Options’ window.

3.2.17 Fourier amplitude spectrum

Like the other buttons, this function has two behaviours
depending on whether single or multiple time-histories have
been selected. The windows produced can be saved in different

Issue C