| 摘要 |
<p>Acoustic source, especially for use in seismic studies at sea, with sound emitting surfaces (2) adapted to be put into sound emitting movements towards and away from each other by use of a drive unit (3) in a per se known manner, in which the sound emitting (2) comprises two curved plate members essentially symmetrically positioned in relation to the longitudinal axis of the source, forming a convex cross section with their respective upper (4) and lower (5) edges converging towards each other, the source comprising a rigid frame (7), preferably for supporting the drive unit (3), comprising at least two rigid slide rods (8) being loosely attached to the side elements with slide bearings, or similar devices, to give the side elements a possibility for movement to and from each other, the upper and the lower edges of the sound emitting surfaces, respectively, are connected to each other with two side elements, the side elements each comprising at least one hinge or a corresponding, flexible connection, stretching along at least a part of the length of the source.</p> |
