Time evolution of broadband seismic noise during the French pilot experiment OFM/SISMOBS

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• 作者：Beauduin ; R. ; Montagner ; J.P.
• 刊名：Oceanographic Literature Review
• 出版年：1997
• 出版时间：July, 1997
• 年：1997
• 卷：44
• 期：7
• 页码：688
• 全文大小：99.3 K

文摘

During the French pilot experiment OFM/SISMOBS in the Atlantic Ocean, two sets of Guralp CMG-3 broadband seismometers were successfully installed and recovered. A first analysis showed that the broadband seismic noise (5 sps) on the seafloor had the same magnitude as compared with the long period seismic noise (1 sps) recorded at SSB, a continental station of the GEOSCOPE network. The noise recorded in the borehole was disappointedly high. The seismic data obtained during the experiment have been reanalyzed and it is shown that the seismic noise in the borehole decreases significantly with time whereas the instrument on the seafloor displays normal variations.