| Popis: |
In 1947, Roy Paslay, George Pavey and Pershing Wipff invented the towed marine streamer (Lawyer et. al., 2001; Paslay et. al., 1956). Since that time, there have been many improvements in streamer technology. However, one aspect of that technology has remained fixed during the intervening 60 years; the type of seismic detector has remained the hydrophone. As a consequence, every recorded and finally processed reflection wavelet from marine streamers has been accompanied by a ghost reflection from the ocean’s surface. And the resulting filter effect on the recorded data has restricted streamer towing depths to a range of about six to nine meters. In this paper, we report on the successful addition of particle velocity sensors to a new dual-sensor towed marine streamer, and the geophysical improvements and advantages that result. |
