Spread cable LGT3615 is used to connect all the geophones which record the seismic waves resulting from either Vibroseis or dynamite when recording seismic data. 

This is basically setting off a sound wave and then recording the time and path it takes to bounce off the rock layers (strata) below. A great number of these "seismic events" can be used to map the strata and structures deep underground to detect faults, oil and gas accumulations, salt domes, etc. 

Any further questions plesae send email to info@longetequ.com for more details.