Seismic cable.

摘要

A method for conducting marine seismic metering using a seabed cable (2) containing a geophone cable (4) and having a series of geophones assembled in succeeding cable spheres (6) which are shock insulated against the geophone cable (4). Each cable sphere (6) is constructed with a dimension and weight relative to the cable diameter to provide good contact with the sea bed. The cable (2) includes a hydrophone cable (5), which floats in a pre-determined position above the geophone cable (4) by means of spacers (8). The cable (2) is pulled forward one length at a time and each time one or more seismic waves is generated. Pressure waves and shear waves are recorded in the lower cable and pressure waves from the seabed (3) and the surface mirror (14) are recorded by the hydrophone elements. <IMAGE>