No. of foreshock process | Duration of foreshock process | Accumulated stress release rate in different stage | Enhancement in stage 4 (tick for yes) | ||||||
1 | 2 | 3 | 4 | average | Std 1 | Std 2 | |||
A1 | 487000 - 514460 | 1.107 | 1.131 | 1.036 | 1.286 | 1.110 | √ | √ | |
A2 | 524000 - 543010 | 1.334 | 0.951 | 1.483 | 1.476 | 1.278 | √ | √ | |
A3 | 561000 - 603430 | 0.847 | 0.935 | 1.190 | 1.334 | 1.032 | √ | √ | |
A4 | 610000 - 633120 | 0.906 | 1.153 | 0.996 | 1.296 | 1.046 | √ | √ | |
A5 | 650000 - 702040 | 1.109 | 0.817 | 0.870 | 0.996 | 0.938 |
|
| |
A6 | 710000 - 749260 | 0.891 | 1.071 | 0.972 | 1.239 | 1.005 | √ | √ | |
A7 | 752000 - 793280 | 0.867 | 0.917 | 0.958 | 1.011 | 0.925 |
|
| |
A8 | 822000 - 854970 | 1.035 | 1.033 | 0.913 | 1.035 | 1.001 |
|
| |
A9 | 856000 - 874060 | 1.052 | 1.191 | 0.885 | 1.356 | 1.074 | √ | √ | |
A10 | 884000 - 919530 | 1.123 | 0.904 | 1.088 | 1.003 | 1.011 |
|
| |
A11 | 922000 - 944020 | 0.969 | 0.788 | 0.803 | 1.445 | 0.914 | √ | √ | |
A12 | 950000 - 1021850 | 1.054 | 0.950 | 0.927 | 1.038 | 0.983 |
|
| |
A13 | 1034000 - 1046480 | 1.038 | 0.975 | 1.386 | 0.962 | 1.116 |
|
| |
A14 | 1065000 - 1106210 | 0.866 | 0.933 | 0.885 | 1.493 | 0.940 | √ | √ | |
A15 | 1117900 - 1138450 | 1.040 | 1.155 | 1.217 | 1.047 | 1.128 |
|
| |
A16 | 1147000 - 1195240 | 1.165 | 0.723 | 0.897 | 1.154 | 0.941 | √ | √ | |
A17 | 1203500 - 1243710 | 0.943 | 0.967 | 1.015 | 1.066 | 0.989 |
|
| |
A18 | 1254500 - 1292140 | 0.649 | 0.894 | 1.013 | 1.213 | 0.887 | √ | √ | |
A19 | 1356200 - 1387330 | 0.740 | 0.731 | 0.898 | 0.847 | 0.795 |
|
| |
A20 | 1407500 - 1430750 | 0.950 | 1.198 | 0.898 | 1.437 | 1.058 | √ | √ | |
A21 | 1435900 - 1480410 | 0.819 | 1.061 | 1.017 | 1.456 | 1.015 | √ | √ | |
A22 | 1486500 - 1498870 | 0.995 | 0.886 | 0.949 | 1.289 | 0.978 | √ | √ | |
A23 | 1520000 - 1590230 | 1.053 | 1.073 | 0.971 | 0.984 | 1.028 |
|
| |
A24 | 1627000 - 1670010 | 0.773 | 0.665 | 0.952 | 1.255 | 0.834 | √ | √ | |
A25 | 1684500 - 1698790 | 1.187 | 0.944 | 1.093 | 1.256 | 1.154 | √ |
| |
A26 | 1702000 - 1757910 | 0.867 | 1.061 | 1.022 | 1.118 | 0.973 |
| √ | |
A27 | 1760000 - 1803370 | 1.107 | 1.457 | 1.189 | 1.194 | 1.245 | √ |
| |
A28 | 1810400 - 1839760 | 1.016 | 1.149 | 1.063 | 1.048 | 1.070 |
|
| |
A29 | 1853000 - 1903150 | 0.941 | 0.987 | 1.119 | 1.118 | 1.026 |
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| |
A30 | 1953000 - 1993910 | 0.957 | 1.011 | 0.943 | 0.904 | 0.964 |
|
| |
B1 | 507000 - 531120 | 1.755 | 1.666 | 1.831 | 1.838 | 1.759 | √ |
| |
B2 | 537200 - 552530 | 1.956 | 1.725 | 1.525 | 2.026 | 1.764 | √ | √ | |
B3 | 558100 - 591270 | 1.477 | 1.428 | 1.913 | 1.631 | 1.609 |
|
| |
B4 | 608800 - 651300 | 1.561 | 1.341 | 1.710 | 2.259 | 1.608 | √ | √ | |
B5 | 653300 - 663560 | 1.732 | 1.791 | 1.438 | 1.402 | 1.628 |
|
| |
B6 | 675000 - 719540 | 1.387 | 1.525 | 1.655 | 1.725 | 1.543 |
| √ | |
B7 | 740000 - 788770 | 1.416 | 1.527 | 1.524 | 1.899 | 1.527 | √ | √ | |
B8 | 805000 - 855460 | 1.583 | 1.329 | 1.508 | 1.416 | 1.468 |
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| |
B9 | 871000 - 931740 | 1.593 | 1.729 | 1.619 | 1.732 | 1.655 |
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