The application of generalized S-transform of Rayleigh waves to detecting near-surface fissures

Ground fissures constitute a kind of geological disasters which not only cause direct damage to various buildings but also re-sult in a series of environmental problems.It is therefore an important task to detect the ground fissures effectively in many engineering projects.In this paper,an experimental research on using Rayleigh waves to detect ground fissures was conducted.The generalized S-transform was adopted to extract the arrival time of the diffracted Rayleigh waves from the ground fissure at a certain receiver in time-frequency domain.And then the arrival times were used to calculate the locations of the ground fissures.In this paper,two half-space fis-sure models and a real world data analysis were used to demonstrate the feasibility and effectiveness of detecting ground fissures with the generalized S-transform.The theoretical models and the real world example show that it is feasible and effective to use the generalized S-transform to detect ground fissures.