Solid marine seismic cable

摘要

A support structure for piezoelectric elements in a marine seismic cable comprises complementary upper and lower cylindrical halves 18'. Each half comprises two axial channels 40, 42 for retaining three piezoelectric elements 34, and a third intermediate axial channel 44 for retaining a flexible circuit 36. Transverse channels 58 between the channels 40, 42 and the channel 44 accommodate extensions 50 from the flexible circuit 36 to the elements 34, which are mounted within their respective channels with a resilient pad 59 with adhesive on both sides. The elements 34 in the support structure are graded so that any group of three elements exhibits approximately the same sensitivity as any other group of three piezoelectric elements.