Abstract
By means of Fourier transform, short time Fourier transform (STFT), continuous wavelet transform (CWT) and discrete wavelet transform (DWT), an experimental recording signal of ground motion induced by an explosion was analyzed. The presented results show that the wavelet transform method is the best way to obtain the information details of explosion seismic effects. In the frequency bands with high frequency values, the seismic energy may be very small, but its peak particle vibration strength may be still very large. Discrete wavelet transform provides a new tool for the time-frequency analysis of explosion seismic effects and their structural responses.
| Original language | English |
|---|---|
| Pages (from-to) | 31-36 |
| Number of pages | 6 |
| Journal | Baozha Yu Chongji/Expolosion and Shock Waves |
| Volume | 23 |
| Issue number | 1 |
| Publication status | Published - Jan 2003 |
Keywords
- Explosion seismic effect
- Ground motion
- Mechanics of explosion
- Nonstationary random process
- Time-frequency analysis