Physics – Geophysics
Scientific paper
Apr 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005georl..3207303m&link_type=abstract
Geophysical Research Letters, Volume 32, Issue 7, CiteID L07303
Physics
Geophysics
2
Marine Geology And Geophysics: Instruments And Techniques, Seismology: Seismicity And Tectonics (1207, 1217, 1240, 1242), Seismology: Volcano Seismology (8419), Geographic Location: Large Bodies Of Water (E.G., Lakes And Inland Seas) (0746)
Scientific paper
We show over 4 months of 3-component broadband seismometer data from the SN-1 seafloor multidisciplinary observatory, deployed offshore of Eastern Sicily (Italy) at 2105 m b.s.l. The SN-1 spectra show background noise levels above 0.1 Hz similar to levels at a nearby ground station. An important noise source below 0.1 Hz is caused by tilt of the sensor induced by sea currents. Seismic noise levels above 0.01 Hz are strongly dependent on Etna volcanic activity. In spite of these intense noise sources, SN-1 recorded many local, regional and global events. The quality of seismic recordings confirms the validity of the installation procedure and good ground coupling of the 3-component broadband sensor, suggesting that SN-1 can be proposed as permanent observatory in this high seismic and volcanic hazard area.
Beranzoli Laura
Favali Paolo
Frugoni Francesco
Monna Stephen
Montuori Caterina
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