Electrophonics - concept for the parallel use of geoelectrics and seismics

Background

Geoelectric and seismic surveys involve positioning sensors (electrodes or geophones respectively) located at equidistant points along a surveying line. It therefore makes sense to combine the two methods. From a methodological point of view, synchronous recording using both methods can diminish the number of equivocal findings, and therefore be merged in a joint evaluation.

Technology

The geoelectric-seismic surveying system currently consists of two cable harnesses with 24 electrophones each, every 2 metres, a geoelectric mapping tool (Lippmann 4 point light 10 W) and two seismic units (Geoden, Geometrics). Both of the tools are controlled with a notebook. The electrophone and the cable harnesses were successfully tested in several test surveys. A particularly impressive aspect is the time-saving synchronous operation of both surveys from one notebook.

Benefits:

• One set-up - two surveying methods
• Inexpensive combination of standard geoelectric and seismic products
• No software development
• Use of existing components
• Complete geoelectric and seismic system
• Special development: Electrophone connection harness and electrophone