GEOPHYSICAL EXPLORATION METHOD AND SOUND SOURCE

摘要

To provide a geophysical exploration method and a geophysical exploration device that can prevent the displacement (amplitude) of a diaphragm from exceeding the drive limit of the device even when a pseudo-random wave is used.SOLUTION: A geophysical exploration method according to an embodiment of the present invention includes: an acceleration signal generation step (Step 11) for generating an acceleration signal Ar capable of generating a pseudo-random wave Wr; an amplitude signal calculation step (Step 12) for calculating an amplitude signal Sr of the pseudo-random wave Wr from the acceleration signal Ar; a modified amplitude signal generation step (Step 13) for generating a modified amplitude signal Sc by cutting off a predetermined low frequency component from the amplitude signal Sr; a limit confirmation step (Step 14) for confirming whether the modified amplitude signal Sc exceeds the drive limit of a sound source; and a modified acceleration signal generation step (Step 15) for generating a rectified acceleration signal Ac from the modified amplitude signal Sc.SELECTED DRAWING: Figure 1