Browsing Reprints by Subject "Seismo-acoustics"

Now showing items 1-6 of 6

    • Estimation of shear wave properties in the upper sea-bed using seismo-acoustical interface waves 

      Frivik, S. A.; Allnor, R.; Hovem, Jens M. (NATO. SACLANTCEN, 1997)
      Acoustic interface waves have been recorded with a bottom deployed acoustic array at several locations. High resolution array processing technique (Prony) is used to estimate velocity versus frequency for the interface ...

    • Low-frequency seismic and hydroacustic noise measurements in a fjord 

      Sevaldsen, Erik (NATO. SACLANTCEN, 1982/06)
      Low frequency ambient noise signals from an ocean bottom seismometer (oBS) put on the sea floor of a Norwegian fjord have been studied. The instrument contains 3 seismometers and one hydrophone, and signals from all 4 ...

    • Seabed survey by VHR multichannel seismics: GEOSIS project 

      Meunier, J.; Dubois, J. C.; Kuhn, H.; Desvallieres, Th.; Puech, A. (NATO. SACLANTCEN, 1997)
      Site surveys prior to the installation of offshore facilities are required to obtain shallow soil structural and geotechnical information. The French project GEOSIS was aimed at improving both geophysical and geotechnical ...

    • Seismic and hydroacoustic sensing of infrasonic noise in coastal waters 

      Schmalfeldt, Bernd; Rauch, Dieter (NATO. SACLANTCEN, 1982/06)
      Three-component ocean-bottom seismometers with radio links have been deployed in coastal waters to investigate natural and man-made noise at extremely low frequencies. Seismograms from one or up to three sensor stations ...

    • Source and receiver responses in boreholes 

      Hovem, Jens M.; Lotsberg, Oddvar (NATO. SACLANTCEN, 1997)
      This report considers the acoustic interaction between the acoustic freld rn a borehole and the elastic field in the surrounding formation. The problem with acoustic-seismic radration of energy from a source in a fluid ...

    • Very-high (cm scale) resolution multichannel seismology 

      Gettrust, Joseph F.; Wood, Warren T.; Rowe, M. M.; Kosalos, J. G.; Szender, S. (NATO. SACLANTCEN, 1997)