Table 2 Summary of the data selection and estimation of the uncertainty for the anticipation of seismic intensity. The uncertainty due to the source factor is given in A1, A2, and A3 and that due to the site amplification factor is given in B.
①| ② | ③ | ④ | ⑤ | ⑥ | |||
|---|---|---|---|---|---|---|---|---|
Earthquake Selection | Station Selection | Magnitude /site correction | Number of pairs | Uncertainty (RMS or Standard Deviation) | For single earthquake or single site (⑤/\(\sqrt {2}\)) | |||
Distance between epicenters | Difference of focal depths | Difference of Mag. | Distance between sites | |||||
Al | ≤ 5km | ≤ 5km | Same Mag. | - | Without magnitude correction | 100 | 0.41 | 0.29 |
A2 | ≤ 5km | ≤ 5km | Same Mag. | - | With magnitude correction | 100 | 0.31 | 0.22 |
A3 | ≤ 5km | ≤ 5km | ≤ 0.5 | - | With magnitude correction | 833 | 0.33 | 0.23 |
B | - | - | - | ≤ 5km | With site correction | 791 | 0.29 | 0.21 |