Seismology is the study of elastic waves propagation through the Earth.
Seismic methods are the most commonly conducted geophysical surveys for engineering investigations. The methods provide engineers and geologists with the most basic of geologic data through simple procedures with common equipment.
In Seismic exploration method artificial seismic energy, are created by shallow borehole explosives, artificial vibratory mechanisms or artificial highly compressed air bubbles.
The mechanical vibration initiated by the source then travels to the location where the vibration is recorded. These vibrations are seismic waves, which include compressional wave and shear wave.
There are 3 methods of exploration seismology: reflection seismology, seismic refraction and seismic tomography with reflection seismology and seismic refraction being the most common and effective.