A new seismic source generator has been
invented at the U. S. Geological Survey.
Using kinetic energy stored by a flywheel,
the truck-mounted source transfers this
energy, by impulses, into the ground.
Both longitudinal (P) and shear (S) waves
can be generated, the latter in 12 directions,
without moving the vehicle.
Additional publication details
USGS Numbered Series
Technology transfer opportunities: patent licenses: portable seismic exploration probe