Bulletin of the Seismological Society of America; February 2006; v. 96; no. 1;
p. 258-271; DOI: 10.1785/0120050032
© Seismological Society of America
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Figure 9. Seismic background noise recorded at station HGN by the STS-2 + Q4120
datalogger (gray) and the STS-1 + gain range datalogger (black). From top
to bottom are shown the north-south (N), east- west (E), and vertical (Z)
components. Each line represents an estimate of the background noise averaged
over one day in 2002. All estimates are corrected for the instrument
response.
