Sparkers sound-sources

Multi-tip sparker-electrodes 25 to 6000 joules

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.

sparking electrode in salty water

 

 

  • Easy to handle
  • Very light weight
  • No need for a heavy catamaran
  • Towed at up to 5 Beaufort sea states
  • 5 sparker models interchangeable
  • Floating high voltage cable

Télécharger
SIG multi-tip sparker-electrodes
Models ELC30L, ELC1200L, ELC820, EDL1020, ELP1250, ELP790
Electrodes 2015M.pdf
Document Adobe Acrobat 6.4 MB

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.


Acoustic signature of sound sources

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.