| 摘要 |
The invention relates to a method for acquiring seismic data at a plurality of positions spread out over a zone on the seabed. The method according to the invention comprises the following steps : - transmitting acoustic waves in the water layer above said zone by means of a plurality of sources, - for each of said acquisition positions, dropping from the surface a seismic acquisition equipment, said equipment comprising a seismic acquisition unit and autonomous guiding equipment adapted to receive whilst descending acoustic signals from said sources and to control its trajectory according to the received acoustic signals so as to direct said equipment towards said position, - performing the seismic acquisition, - causing the acquisition equipments to move up to the surface, - retrieving the acquisition equipments on the surface. |
