Click on the red squares to view Tremor Graphs
The red squares on the map indicate the
location of the Meteorological
Office seismometers. Click on them to view the tremor graphs. The graphs show average
vertical movement per minute for each seismometer, in three frequency ranges (Hz).The
vertical axis has the same scale for each station. The main purpose of these
graphs is to monitor changes in intensity of seismic wave motion. The absolute value of the scale has no
meaning. Many phenomena can influence the intensity, for example wind, ocean waves
and traffic. Sometimes floods and volcanic tremor can be detected. Earthquakes appear as
spikes on the graphs. From here
you can view tremor plots from all our seismic stations. |
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