Research Article
Quantitative Identification of Pulse-Like Ground Motions Based on Hilbert–Huang Transform
Table 3
The velocity pulse parameters.
| | No. | 776 | 806 | 1194 | 1499 | | Method | HHT | Wavelet | HHT | Wavelet | HHT | Wavelet | HHT | Wavelet |
| | PGVr (cm/s) | 37.04 | 31.89 | 29.28 | 51.94 | 21.46 | 34.88 | 22.98 | 39.94 | | PGVv (cm/s) | 62.35 | 57.90 | 41.79 | 51.94 | 37.64 | 53.52 | 33.90 | 40.00 | | PGV ratio (%) | 59.40 | 55.07 | 70.07 | 100.00 | 57.01 | 65.17 | 67.80 | 99.84 | | ENr (cm2/s2) | 7.02E + 05 | 1.16E + 06 | 5.86E + 05 | 9.92E + 05 | 6.86E + 05 | 1.83E + 06 | 3.63E + 05 | 1.11E + 06 | | ENv (cm2/s2) | 1.12E + 06 | 1.58E + 06 | 1.30E + 06 | 1.28E + 06 | 1.25E + 06 | 2.52E + 06 | 8.80E + 05 | 2.09E + 06 | | Energy ratio | 62.50% | 73.26% | 45.04% | 77.63% | 54.99% | 72.64% | 41.24% | 53.04% | | Index | 0.86 | 0.56 | 0.98 | 0.00 | 0.98 | 0.25 | 0.99 | 0.10 | | t20%,orig (s) | 7.61 | 7.90 | 12.71 | 12.62 | 40.00 | 35.93 | 31.29 | 36.91 | | t10%,puls (s) | 7.01 | 8.00 | 12.34 | 12.53 | 36.46 | 35.20 | 30.63 | 34.58 |
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