These characteristic multi-tip sound-sources have been designed and optimized for a wide range of 25 to 6000 joules sparkers. It provides high resolution profiles in geophysical surveys on oceanographic vessels as well as on small boats for coastal geophysics.
The seismic sound source creates an acoustic signal in the water.
This acoustic signal penetrates into the seabed, and is reflected at each boundary between layers that have a different acoustic impedance.
The ability to distinguish two layers, or reflectors, is called resolution. This resolution depends on the frequency of the acoustic source.
The sparker signatures vary with the electrode configuration. And the resolution can be improved with the reduction of the second sparker pulse, commonly called the bubble collapse in the litterature.
The SIG sparker-electrodes, or spark-arrays, are recognized for their acoustic signal signatures.
The sparker-tips have to be replaced due to the electrolysis phenomenon mobilizing the cations.
The best high resolution signature on the seismic sound source requires this concession of trimming the tips of the sparker-electrode.