Several methods were used to estimate
As ground motion records became more abundant, site amplification had been studied by many researchers. Hayashi et al. [
The most straightforward way to evaluate
On May 12, 2008, an earthquake with
In order to use these records from the Wenchuan main shock and aftershocks in the NGA (Next-Generation Attenuation) project of PEER (Pacific Earthquake Engineering Research Center), an estimate of
In this study, 147 shear-wave velocity profiles measured with borehole technique at the strong-motion station in Southwest China (Sichuan and Gansu provinces) were used. These strong-motion stations are located in the heavily damaged region of the Wenchuan earthquake. The locations of these stations are shown in Figure
Station distribution around the main shock.
In this method, we assume that the shear-wave velocity from the bottom of the borehole to 30 m is constant at
Since
The PEER NGA database [ A, rock: instrument on rock ( B, shallow (stiff) soil: instrument on/in soil profile up to 20 m thick overlying rock. C, deep narrow soil: instrument on/in soil profile at least 20 m thick overlying rock, in a narrow canyon or valley not more than several km wide. D, deep broad soil: instrument on/in soil profile at least 20 m thick overlying rock, in a broad valley. E, soft deep soil: instrument on/in deep soil profile with average
A median
Median
Geomatrix Classification | Median |
|
|
---|---|---|---|
A | 660 | 324 | 74 |
B | 424 | 211 | 97 |
C | 338 | 70 | 44 |
D | 274 | 110 | 306 |
E | 191 | 61 | 40 |
The Geomatrix Classification for the 147 Southwest China sites is 9 A sites, 52 B sites, 83 C sites, and 3 D sites.
Next, we compare the median shear-wave velocity profiles of Southwest China (SWC) with NGA profiles based on Geomatrix Classification. The result is shown in Figure
Comparison of median
Since the median shear-wave velocity profiles of SWC sites are similar to those of the NGA sites, we may assign the median
Boore [
Boore [
Table
Coefficients of (
|
|
|
|
---|---|---|---|
10 | 0.0421 | 1.0292 | 0.0713 |
11 | 0.0221 | 1.0341 | 0.0647 |
12 | 0.0126 | 1.0352 | 0.0594 |
13 | 0.0142 | 1.0318 | 0.0548 |
14 | 0.0123 | 1.0297 | 0.0501 |
15 | 0.0138 | 1.0263 | 0.0459 |
16 | 0.0139 | 1.0237 | 0.0422 |
17 | 0.0196 | 1.0190 | 0.0394 |
18 | 0.0249 | 1.0144 | 0.0364 |
19 | 0.0256 | 1.0117 | 0.0332 |
20 | 0.0254 | 1.0095 | 0.0302 |
21 | 0.0253 | 1.0072 | 0.0270 |
22 | 0.0269 | 1.0044 | 0.0241 |
23 | 0.0222 | 1.0042 | 0.0208 |
24 | 0.0169 | 1.0043 | 0.0177 |
25 | 0.0115 | 1.0045 | 0.0147 |
26 | 0.0066 | 1.0045 | 0.0115 |
27 | 0.0025 | 1.0043 | 0.0084 |
28 | 0.0008 | 1.0031 | 0.0055 |
29 | 0.0004 | 1.0015 | 0.0027 |
Since the standard deviation of Boore’s estimate is less than 8 percent for stations with borehole depth larger than 10 m, we apply Boore’s empirical model, which is generated from California data, to the SWC profiles to estimate
A comparison of
Boore indicates that
Linear and cubic fit to Kiknet profiles were performed to fit
According to (
Table
Coefficients and natural logarithm of the standard deviation for (
Depth (m) |
|
|
|
|
|
|
|
|
---|---|---|---|---|---|---|---|---|
5 | 1.3412 | 0.5626 | 1.0320 | 1.3924 | −0.5117 | 0.0906 | 0.1174 | 0.1158 |
6 | 1.2498 | 0.5975 | −1.2168 | 3.8378 | −1.3922 | 0.1955 | 0.1120 | 0.1110 |
7 | 1.1650 | 0.6288 | −1.1351 | 3.6074 | −1.2640 | 0.1756 | 0.1062 | 0.1055 |
8 | 1.1071 | 0.6492 | 0.0978 | 2.1222 | −0.6846 | 0.1022 | 0.1018 | 0.1012 |
9 | 1.0009 | 0.6878 | −2.0070 | 4.3394 | −1.4621 | 0.1928 | 0.0956 | 0.0952 |
10 | 0.9056 | 0.7223 | −3.2943 | 5.6294 | −1.8935 | 0.2410 | 0.0896 | 0.0894 |
11 | 0.8111 | 0.7559 | −4.0334 | 6.2874 | −2.0859 | 0.2595 | 0.0837 | 0.0835 |
12 | 0.7307 | 0.7840 | −4.0876 | 6.2020 | −2.0116 | 0.2464 | 0.0784 | 0.0782 |
13 | 0.6465 | 0.8132 | −4.6981 | 6.7207 | −2.1550 | 0.2592 | 0.0732 | 0.0729 |
14 | 0.5709 | 0.8389 | −4.9266 | 6.8299 | −2.1532 | 0.2550 | 0.0681 | 0.0677 |
15 | 0.5018 | 0.8617 | −5.3861 | 7.2075 | −2.2547 | 0.2638 | 0.0627 | 0.0622 |
16 | 0.4401 | 0.8816 | −5.5568 | 7.2781 | −2.2480 | 0.2600 | 0.0579 | 0.0573 |
17 | 0.3824 | 0.8999 | −5.6979 | 7.3279 | −2.2381 | 0.2563 | 0.0533 | 0.0525 |
18 | 0.3315 | 0.9156 | −5.6043 | 7.1366 | −2.1460 | 0.2433 | 0.0489 | 0.0480 |
19 | 0.2848 | 0.9296 | −4.8807 | 6.2744 | −1.8177 | 0.2028 | 0.0445 | 0.0436 |
20 | 0.2440 | 0.9415 | −4.0266 | 5.2892 | −1.4511 | 0.1583 | 0.0404 | 0.0395 |
21 | 0.2055 | 0.9525 | −2.9989 | 4.1264 | −1.0243 | 0.1071 | 0.0362 | 0.0353 |
22 | 0.1724 | 0.9616 | −1.8671 | 2.8692 | −0.5696 | 0.0532 | 0.0323 | 0.0315 |
23 | 0.1424 | 0.9695 | −1.1240 | 2.0489 | −0.2768 | 0.0191 | 0.0288 | 0.0280 |
24 | 0.1155 | 0.9763 | −0.5169 | 1.3890 | −0.0458 | −0.0073 | 0.0255 | 0.0248 |
25 | 0.0883 | 0.9832 | −0.1184 | 0.9585 | 0.1017 | −0.0236 | 0.0223 | 0.0217 |
26 | 0.0622 | 0.9897 | 0.2604 | 0.5551 | 0.2377 | −0.0383 | 0.0194 | 0.0189 |
27 | 0.0413 | 0.9943 | 0.2788 | 0.5517 | 0.2275 | −0.0355 | 0.0163 | 0.0158 |
28 | 0.0216 | 0.9985 | 0.2809 | 0.5694 | 0.2087 | −0.0315 | 0.0136 | 0.0133 |
29 | 0.0033 | 1.0023 | 0.4227 | 0.4434 | 0.2391 | −0.0331 | 0.0117 | 0.0115 |
The linear fit and cubic fit to the Kiknet data in 4 depth bins, 5, 10, 20, and 28 m.
Figure
Next, we assess whether conditioning a Geomatrix category can improve the
Comparison of bias and standard deviation between the normal fit and Geo fit to Kiknet profiles.
Depth bins | Bias of |
Standard deviation | Bias of |
Standard deviation | Bias of |
Standard deviation | Bias of |
Standard deviation | Bias of |
Standard deviation |
---|---|---|---|---|---|---|---|---|---|---|
Simple extrapolate | Simple extrapolate | Linear fit | Linear fit | Geolinear fit | Geolinear fit | Cubic fit | Cubic fit | Geocubic fit | Geocubic fit | |
5 | 0.4945 | 0.3137 | 0.0074 | 0.2603 | 0.0049 | 0.2428 | 0.0068 | 0.2570 | 0.0028 | 0.2395 |
10 | 0.1670 | 0.1518 | 0.0051 | 0.1998 | 0.0036 | 0.1859 | 0.0068 | 0.1990 | 0.0045 | 0.1855 |
15 | 0.0664 | 0.0790 | 0.0026 | 0.1416 | 0.0014 | 0.1342 | 0.0028 | 0.1411 | 0.0014 | 0.1326 |
20 | 0.0240 | 0.0438 | 0.0015 | 0.0912 | 0.0007 | 0.0868 | 0.0026 | 0.0896 | −0.0007 | 0.0827 |
28 | 0.0029 | 0.0249 | 0.0005 | 0.0310 | 0.0003 | 0.0301 | 0.0004 | 0.0303 | 0.0021 | 0.0291 |
Bias =
Table
We use the normal linear fit, which is defined as
The USGS earthquake hazards program developed an approach based on the similarity of geology and topography to provide a first-order assessment of
Yong built a correlation between
We have six types of
Bias and standard deviation of the five other types of
|
|
|
|
|
|
---|---|---|---|---|---|
Bias (ln) | −0.0704 | −0.0656 | −0.3189 | −0.3451 | −0.4434 |
|
0.0796 | 0.2003 | 0.2769 | 0.2444 | 0.4062 |
Table
The bias and standard deviation of
In addition, Table
Based on
Median
Geomatrix Classification | Median |
|
|
---|---|---|---|
A | 553.40 | 79.23 | 9 |
B | 412.29 | 69.23 | 52 |
C | 353.73 | 63.72 | 83 |
D | 296.83 | 72.54 | 3 |
See Table
Station code | Depth of borehole (m) |
|
Bedrock at borehole bottom | Geomatrix Classification |
|
|
|
|
|
|
|
---|---|---|---|---|---|---|---|---|---|---|---|
51AXD | 11.80 | 878 | Yes | B | 405 | 424 | 280 | 383 | — | — | 374 |
51AXT | 12.80 | 510 | Yes | B | 331 | 424 | 281 | 376 | 388 | 547 | 362 |
51AXY | 22.00 | 475 | No | C | 368 | 338 | 371 | 404 | — | — | 595 |
51BTD | 22.20 | 436 | No | C | 334 | 338 | 337 | 368 | 547 | 547 | 540 |
51BTT | 22.30 | 403 | No | C | 273 | 338 | 268 | 296 | 519 | 519 | 525 |
51BXY | 19.80 | 618 | Yes | B | 318 | 424 | 288 | 332 | 519 | 519 | 760 |
51BXZ | 18.20 | 658 | Yes | B | 379 | 424 | 341 | 394 | 519 | 519 | 760 |
51CXQ | 4.90 | 321 | Yes | A | 321 | 660 | — | 564 | 402 | 402 | 360 |
51DCN | 22.10 | 504 | No | C | 284 | 338 | 267 | 295 | 547 | 547 | 572 |
51DJA | 22.00 | 453 | No | C | 287 | 338 | 276 | 304 | — | — | 332 |
51DXY | 22.00 | 431 | No | C | 342 | 338 | 347 | 379 | 374 | 374 | 398 |
51DYB | 15.20 | 539 | Yes | B | 374 | 424 | 345 | 418 | 388 | 388 | 355 |
51GYS | 12.20 | 517 | Yes | B | 345 | 424 | 290 | 385 | 519 | 519 | 557 |
51GYZ | 20.10 | 1207 | Yes | B | 388 | 424 | 326 | 366 | 519 | 519 | 465 |
51GZT | 22.00 | 350 | No | C | 244 | 338 | 240 | 266 | 519 | 519 | 415 |
51GZX | 22.00 | 325 | No | C | 337 | 338 | 373 | 406 | 402 | 519 | 431 |
51HDD | 9.00 | 639 | Yes | A | 502 | 660 | — | 547 | — | — | 602 |
51HDQ | 13.00 | 689 | Yes | B | 414 | 424 | 336 | 423 | — | — | 747 |
51HDX | 14.50 | 651 | Yes | B | 362 | 424 | 297 | 376 | — | — | 719 |
51HLB | 12.00 | 659 | Yes | B | 370 | 424 | 278 | 373 | — | — | 760 |
51HLD | 9.00 | 579 | Yes | B | 431 | 424 | — | 471 | — | — | 760 |
51HLF | 21.50 | 311 | No | C | 290 | 338 | 311 | 346 | — | — | 760 |
51HLW | 12.00 | 564 | Yes | B | 403 | 424 | 355 | 449 | — | — | 760 |
51HLY | 13.50 | 802 | Yes | B | 417 | 424 | 324 | 411 | — | — | 479 |
51HSD | 21.00 | 496 | No | C | 340 | 338 | 331 | 367 | 519 | 519 | 760 |
51HSL | 21.00 | 227 | No | C | 266 | 338 | 316 | 351 | 519 | 402 | 760 |
51HYJ | 22.30 | 515 | No | C | 449 | 338 | 470 | 507 | 547 | 519 | 497 |
51HYQ | 22.40 | 392 | No | C | 322 | 338 | 331 | 362 | 519 | 519 | 760 |
51HYU | 20.30 | 677 | Yes | A | 441 | 660 | 424 | 469 | — | — | 271 |
51HYW | 22.50 | 521 | No | C | 401 | 338 | 407 | 442 | 519 | 519 | 760 |
51HYY | 19.40 | 515 | Yes | B | 414 | 424 | 426 | 475 | 519 | 519 | 760 |
51JLN | 22.00 | 547 | No | C | 415 | 338 | 416 | 451 | 519 | 519 | 583 |
51JLT | 15.30 | 520 | Yes | B | 311 | 424 | 267 | 337 | 547 | 547 | 760 |
51JYC | 15.00 | 1070 | Yes | B | 466 | 424 | 357 | 430 | 497 | 388 | 311 |
51JYD | 10.20 | 603 | Yes | A | 435 | 660 | 367 | 475 | 328 | 388 | 184 |
51JYH | 22.00 | 633 | Yes | B | 320 | 424 | 296 | 326 | 547 | 547 | 760 |
51JYW | 20.00 | 887 | Yes | B | 459 | 424 | 415 | 459 | — | — | 376 |
51JZB | 22.00 | 465 | No | C | 328 | 338 | 323 | 354 | 519 | 519 | 760 |
51JZG | 22.00 | 451 | No | C | 304 | 338 | 296 | 326 | 519 | 519 | 760 |
51JZW | 22.00 | 607 | No | C | 428 | 338 | 422 | 457 | 519 | 519 | 760 |
51JZY | 22.00 | 485 | No | C | 321 | 338 | 312 | 342 | 519 | 519 | 760 |
51KDG | 22.00 | 330 | No | C | 269 | 338 | 275 | 303 | 519 | 519 | 536 |
51LBD | 13.20 | 503 | Yes | B | 345 | 424 | 304 | 391 | 519 | 519 | 484 |
51LBH | 13.20 | 503 | Yes | B | 345 | 424 | 304 | 391 | 519 | 519 | 559 |
51LDD | 22.00 | 400 | No | C | 336 | 338 | 346 | 378 | 519 | 519 | 760 |
51LDJ | 22.00 | 450 | Yes | C | 313 | 338 | 308 | 338 | 519 | 519 | 760 |
51LDL | 22.00 | 365 | No | C | 308 | 338 | 318 | 349 | 519 | 519 | 760 |
51LDS | 22.00 | 360 | No | C | 352 | 338 | 380 | 414 | 519 | 519 | 760 |
51LHT | 20.50 | 375 | No | C | 327 | 338 | 346 | 387 | 519 | 519 | 732 |
51LSF | 9.80 | 1130 | Yes | B | 605 | 424 | — | 517 | 547 | 388 | 760 |
51LSH | 9.80 | 1660 | Yes | B | 858 | 424 | — | 649 | 328 | 547 | 682 |
51LSJ | 10.70 | 876 | Yes | A | 598 | 660 | 498 | 587 | 374 | 393 | 363 |
51LXM | 21.00 | 359 | No | C | 287 | 338 | 292 | 326 | 519 | 519 | 760 |
51LXS | 20.20 | 452 | No | C | 311 | 338 | 302 | 341 | 519 | 519 | 760 |
51LXT | 21.00 | 424 | No | C | 317 | 338 | 316 | 351 | 519 | 519 | 760 |
51LXY | 20.20 | 257 | No | C | 269 | 338 | 308 | 347 | — | — | 760 |
51MCL | 20.50 | 1050 | Yes | B | 460 | 424 | 409 | 453 | 519 | 519 | 568 |
51MED | 16.00 | 941 | Yes | B | 489 | 424 | 408 | 475 | 519 | 519 | 760 |
51MES | 12.00 | 482 | Yes | B | 389 | 424 | 380 | 473 | — | — | 760 |
51MEZ | 20.10 | 474 | Yes | B | 363 | 424 | 364 | 406 | 519 | 519 | 760 |
51MNA | 22.00 | 529 | No | C | 492 | 338 | 525 | 563 | 519 | 519 | 760 |
51MNC | 22.00 | 516 | No | C | 438 | 338 | 453 | 490 | 519 | 547 | 760 |
51MNH | 22.00 | 527 | No | C | 349 | 338 | 339 | 371 | 547 | 547 | 404 |
51MNJ | 22.00 | 410 | No | C | 388 | 338 | 415 | 450 | 388 | 547 | 448 |
51MNL | 22.00 | 500 | No | C | 323 | 338 | 312 | 343 | 519 | 388 | 419 |
51MNM | 22.00 | 456 | No | C | 342 | 338 | 342 | 374 | 547 | 547 | 496 |
51MNZ | 22.00 | 526 | No | C | 374 | 338 | 370 | 403 | 519 | 519 | 760 |
51MXD | 21.00 | 358 | No | C | 268 | 338 | 267 | 299 | 519 | 519 | 760 |
51MXN | 21.00 | 494 | No | C | 387 | 338 | 391 | 430 | 519 | 519 | 760 |
51MYL | 22.00 | 375 | No | C | 310 | 338 | 319 | 349 | — | — | 324 |
51MYS | 22.00 | 415 | Yes | B | 300 | 424 | 297 | 327 | 388 | 547 | 474 |
51NNH | 22.00 | 432 | No | C | 267 | 338 | 256 | 283 | — | — | 760 |
51NNL | 22.00 | 369 | No | C | 302 | 338 | 309 | 339 | 519 | 519 | 760 |
51NNS | 22.00 | 280 | No | C | 267 | 338 | 287 | 316 | 519 | 519 | 760 |
51PGD | 22.00 | 380 | No | C | 265 | 338 | 260 | 287 | — | — | 688 |
51PGL | 22.00 | 413 | No | C | 331 | 338 | 337 | 368 | 519 | 519 | 760 |
51PGQ | 22.00 | 557 | No | C | 284 | 338 | 263 | 290 | 519 | 519 | 760 |
51PJD | 22.00 | 433 | No | C | 350 | 338 | 357 | 389 | 402 | 497 | 267 |
51PJW | 22.00 | 440 | No | C | 312 | 338 | 308 | 338 | 363 | 374 | 216 |
51PWM | 25.00 | 753 | Yes | B | 373 | 424 | 357 | 376 | 519 | 519 | 589 |
51PZF | 22.00 | 700 | Yes | A | 573 | 660 | 588 | 628 | — | — | 760 |
51PZT | 22.00 | 750 | Yes | A | 448 | 660 | 427 | 463 | — | — | 760 |
51PZW | 22.00 | 800 | Yes | B | 411 | 424 | 381 | 415 | — | — | 453 |
51QCD | 20.00 | 893 | Yes | B | 394 | 424 | 345 | 386 | — | — | 611 |
51QLY | 22.00 | 747 | Yes | B | 486 | 424 | 472 | 508 | 547 | 519 | 527 |
51SFB | 20.00 | 548 | Yes | B | 355 | 424 | 338 | 379 | 519 | 519 | 476 |
51SMC | 22.00 | 340 | No | C | 309 | 338 | 326 | 357 | 519 | 519 | 760 |
51SMK | 22.00 | 405 | No | C | 363 | 338 | 382 | 416 | 519 | 519 | 760 |
51SML | 22.00 | 395 | Yes | C | 336 | 338 | 348 | 380 | 519 | 519 | 760 |
51SMM | 22.00 | 320 | No | C | 279 | 338 | 291 | 320 | 519 | 519 | 760 |
51SMW | 22.00 | 405 | No | C | 281 | 338 | 276 | 305 | 519 | 519 | 760 |
51SMX | 22.00 | 400 | No | C | 310 | 338 | 312 | 343 | 519 | 519 | 760 |
51SPA | 21.00 | 473 | Yes | C | 342 | 338 | 338 | 374 | 519 | 519 | 527 |
51TQL | 22.00 | 1066 | Yes | B | 529 | 424 | 489 | 526 | 519 | 519 | 760 |
51WCW | 20.10 | 485 | Yes | C | 357 | 338 | 353 | 395 | — | — | 760 |
51XCC | 22.00 | 351 | No | D | 277 | 274 | 280 | 309 | 363 | 388 | 224 |
51XCH | 22.00 | 522 | No | C | 386 | 338 | 385 | 418 | 547 | 547 | 518 |
51XCL | 22.00 | 504 | No | C | 324 | 338 | 313 | 343 | 547 | 547 | 348 |
51XCT | 22.00 | 510 | Yes | B | 389 | 424 | 390 | 424 | — | — | 449 |
51XCY | 21.00 | 358 | Yes | C | 249 | 338 | 243 | 274 | 547 | 547 | 606 |
51XDG | 22.00 | 507 | No | C | 353 | 338 | 347 | 379 | 519 | 519 | 573 |
51XDM | 22.00 | 700 | No | C | 405 | 338 | 384 | 417 | 519 | 547 | 760 |
51XJB | 21.00 | 430 | No | C | 327 | 338 | 328 | 364 | — | — | 760 |
51XJD | 21.00 | 498 | No | C | 343 | 338 | 334 | 370 | 519 | 519 | 760 |
51XXC | 22.00 | 431 | No | D | 336 | 274 | 340 | 372 | 459 | 459 | 726 |
51YAD | 22.00 | 721 | Yes | B | 245 | 424 | 216 | 240 | — | — | 253 |
51YAL | 22.00 | 1168 | Yes | B | 544 | 424 | 497 | 535 | 519 | 519 | 372 |
51YAM | 22.00 | 877 | Yes | A | 577 | 660 | 561 | 600 | 547 | 388 | 760 |
51YAS | 22.00 | 694 | Yes | B | 422 | 424 | 403 | 437 | 519 | 547 | 760 |
51YBA | 22.00 | 760 | Yes | B | 475 | 424 | 456 | 493 | — | — | 589 |
51YBG | 15.10 | 1302 | Yes | A | 739 | 660 | 631 | 693 | — | — | 516 |
51YBH | 22.00 | 566 | Yes | B | 358 | 424 | 345 | 377 | — | — | 376 |
51YXX | 22.00 | 364 | No | C | 304 | 338 | 313 | 343 | 547 | 547 | 630 |
51YXZ | 22.00 | 444 | No | C | 348 | 338 | 352 | 385 | 547 | 547 | 757 |
51YYJ | 22.00 | 555 | Yes | B | 384 | 424 | 376 | 410 | — | — | 760 |
51YYM | 22.00 | 550 | No | C | 347 | 338 | 334 | 365 | 388 | 547 | 282 |
51YYW | 22.50 | 420 | No | C | 248 | 338 | 238 | 264 | 388 | 459 | 430 |
51ZJJ | 22.30 | 523 | Yes | B | 354 | 424 | 348 | 380 | 519 | 519 | 760 |
51ZJQ | 20.80 | 520 | Yes | B | 346 | 424 | 338 | 379 | 519 | 547 | 524 |
62ANY | 30.00 | 562 | No | C | 425 | 338 | 425 | 425 | — | — | 519 |
62BAS | 23.00 | 530 | Yes | C | 307 | 338 | 293 | 318 | 519 | 519 | 687 |
62DAT | 13.50 | 532 | Yes | B | 432 | 424 | 438 | 522 | 388 | 388 | 348 |
62ERT | 13.00 | 528 | Yes | B | 371 | 424 | 330 | 417 | 246 | 519 | 333 |
62GLA | 30.00 | 523 | Yes | C | 229 | 338 | 229 | 229 | 402 | 402 | 368 |
62GXT | 24.00 | 510 | Yes | C | 256 | 338 | 243 | 262 | 402 | 519 | 403 |
62HEP | 30.00 | 290 | No | C | 238 | 338 | 238 | 238 | 547 | 519 | 605 |
62HEZ | 20.00 | 540 | Yes | B | 338 | 424 | 318 | 358 | — | — | 589 |
62HJI | 28.00 | 506 | Yes | C | 372 | 338 | 373 | 381 | — | — | 563 |
62JAI | 30.00 | 540 | No | C | 282 | 338 | 282 | 282 | 388 | 519 | 269 |
62JCH | 22.00 | 550 | No | C | 477 | 338 | 498 | 535 | — | — | 306 |
62KLE | 16.00 | 562 | Yes | B | 351 | 424 | 311 | 376 | 519 | 519 | 339 |
62LJB | 25.00 | 540 | No | C | 358 | 338 | 354 | 373 | 328 | 547 | 304 |
62MXT | 22.00 | 638 | Yes | C | 301 | 338 | 275 | 303 | 402 | 547 | 378 |
62PAN | 30.00 | 530 | Yes | C | 343 | 338 | 343 | 343 | 519 | 388 | 548 |
62PJY | 30.00 | 284 | No | C | 249 | 338 | 249 | 249 | — | — | 320 |
62QCH | 28.00 | 510 | No | C | 362 | 338 | 362 | 370 | 374 | 345 | 322 |
62SHW | 22.00 | 510 | No | C | 384 | 338 | 385 | 419 | 519 | 519 | 760 |
62TCH | 16.00 | 790 | Yes | B | 402 | 424 | 332 | 397 | 519 | 519 | 698 |
62TSH | 22.00 | 540 | Yes | C | 408 | 338 | 409 | 443 | 547 | 547 | 574 |
62WUD | 28.00 | 262 | No | D | 221 | 274 | 223 | 228 | 519 | 519 | 522 |
62XGU | 24.00 | 548 | Yes | C | 298 | 338 | 285 | 306 | 519 | 547 | 325 |
62XHS | 26.00 | 530 | Yes | B | 341 | 424 | 337 | 351 | — | — | 642 |
62XIC | 30.00 | 506 | No | C | 284 | 338 | 284 | 284 | 388 | 374 | 356 |
62YGX | 20.00 | 525 | Yes | B | 311 | 424 | 288 | 327 | — | — | 544 |
62YLG | 12.00 | 810 | Yes | B | 517 | 424 | 423 | 513 | — | — | 666 |
62ZNI | 9.00 | 730 | Yes | B | 387 | 424 | — | 363 | 519 | 402 | 760 |
62ZPU | 20.00 | 516 | Yes | B | 406 | 424 | 411 | 456 | 547 | 519 | 475 |
The authors declare that there is no conflict of interests regarding the publication of this paper.
The records used in this study are provided by the National Strong-Motion Networks Center of China. The authors give their thanks to the National Strong-Motion Networks Center of China and all of the relevant managers and experts. This work is financially supported by the National Natural Science Foundation of China (51278469, 51308509).