Abstract
A three-dimensional seismic model has been developed for laboratory instruction. To simulate seismic energy sources, a transducer sends a train of modulated ultrasonic waves of frequency 60 kHz into a model ground. Various informative signals, such as the direct, refracted, reflected and diffracted waves from models of geological structures in the subsurface are displayed on the screen of an oscilloscope. The travel time of each signal is read directly from the oscilloscope, or from photos taken with an oscilloscope camera. Although the instrumentation involved is simple and easily assembled, nevertheless the model can simulate real field conditions with uneven typography, weathered layer and various subsurface geological structures. Several seismograms obtained with the equipment are illustrated in this article.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
