Guralp Systems ART - Manual (Page 37)

User guide
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.
3.2.14 Particle motions
When two or three components of the same record are
selected the particle motions button becomes active. Clicking
on this button produces a plot of the motion of a particle
(hodogram) at the station using the acceleration, velocity and
displacement of the two or three time-histories.
If two time-histories are selected a 2D plot is created with three
graphs:
•
the left-hand graph shows the acceleration of the first
component (on the x-axis) against the acceleration of
the second component (on the y-axis);
•
the middle graph shows the velocity of the first
component (on the x-axis) against the velocity of the
second component (on the y-axis); and
•
the right-hand graph shows the displacement of the
first component (on the x-axis) against the
displacement of the second component (on the y-axis).
If three time-histories are selected a 3D plot is created with
three graphs:
•
the left-hand graph shows the acceleration of the first
component (on the x-axis) against the acceleration of
the second component (on the y-axis) and the
acceleration of the third component (z-axis);
•
the middle graph shows the velocity of the first
component (on the x-axis) against the velocity of the
second component (on the y-axis) and the velocity of
the third component (z-axis); and
•
the right-hand graph shows the displacement of the
first component (on the x-axis) against the
displacement of the second component (on the y-axis)
and the displacement of the third component (z-axis).
The order of the components is always the same as that given
in the list of time-histories currently in memory. When three
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