1.2 Boore et al. (1997)

1) Reference

David M. Boore, William B. Joyner, and Thomas E. Fumal, 1997, Equations for Estimating Horizontal Response Spectra and Peak Acceleration from Western North American Earethquakes: A Summary of recent Work, Seismological Research Letters, Vol. 68, No. 1, 128-153.

2) Estimated physical parameter

- Peak ground acceleration (Horizontal)

- Spectral acceleration (h=5%, T=0.1 to 2 sec) (Horizontal)

3) Used strong motion data

- Area: Western North America

- Type of earthquake: Shallow earthquake (which the fault rupture lies mainly above a depth of 20km)

- Period: 1940 – 1992 years

- Number of events: 19

- Number of records: 271

- Magnitude: 5.2 – 7.4

- Epicentral distance: 0 – 118 km

4) Style of faulting

(a) Strike-slip

(b) Reverse-slip

(c) Mechanism is not specified

5) Ground condition

Classified by the average S-wave velocity over 30 m from ground surface

6) Definition of magnitude

Moment magnitude

7) Definition of source distance

Closest horizontal distance to a point on the earth’s surface that lies directly above the rupture.

8) Definition of horizontal component

Random horizontal component

9) Applicability written in the paper

The equations are to be used magnitude 5.5 – 7.5 and distance no greater than 80 km.

10) Empirical attenuation formula

Table 1.2.1 Coefficients to estimate pseudo acceleration response spectra(The entries for zero period are the coefficients for peak horizontal acceleration)

Period	B1SS	B1RV	B1ALL	B2	B3	B5	BV	VA	h	s1	sc	sr	se	slnY
0.000	-0.313	-0.117	-0.242	0.527	0.000	-0.778	-0.371	1396	5.57	0.431	0.226	0.486	0.184	0.520
0.100	1.006	1.087	1.059	0.753	-0.226	-0.934	-0.212	1112	6.27	0.440	0.189	0.479	0.000	0.479
0.110	1.072	1.164	1.130	0.732	-0.230	-0.937	-0.211	1291	6.65	0.437	0.200	0.481	0.000	0.481
0.120	1.109	1.215	1.174	0.721	-0.233	-0.939	-0.215	1452	6.91	0.437	0.210	0.485	0.000	0.485
0.130	1.128	1.246	1.200	0.711	-0.233	-0.939	-0.221	1596	7.08	0.435	0.216	0.486	0.000	0.486
0.140	1.135	1.261	1.208	0.707	-0.230	-0.938	-0.228	1718	7.18	0.435	0.223	0.489	0.000	0.489
0.150	1.128	1.264	1.204	0.702	-0.228	-0.937	-0.238	1820	7.23	0.435	0.230	0.492	0.000	0.492
0.160	1.112	1.257	1.192	0.702	-0.226	-0.935	-0.248	1910	7.24	0.435	0.235	0.495	0.000	0.495
0.170	1.090	1.242	1.173	0.702	-0.221	-0.933	-0.258	1977	7.21	0.435	0.239	0.497	0.000	0.497
0.180	1.063	1.222	1.151	0.705	-0.216	-0.930	-0.270	2037	7.16	0.435	0.244	0.499	0.002	0.499
0.190	1.032	1.198	1.122	0.709	-0.212	-0.927	-0.281	2080	7.10	0.435	0.249	0.501	0.005	0.501
0.200	0.999	1.170	1.089	0.711	-0.207	-0.924	-0.292	2118	7.02	0.435	0.251	0.502	0.009	0.502
0.220	0.925	1.104	1.019	0.721	-0.198	-0.918	-0.315	2158	6.83	0.437	0.258	0.508	0.016	0.508
0.240	0.847	1.033	0.941	0.732	-0.189	-0.912	-0.338	2178	6.62	0.437	0.262	0.510	0.025	0.511
0.260	0.764	0.958	0.861	0.744	-0.180	-0.906	-0.360	2173	6.39	0.437	0.267	0.513	0.032	0.514
0.280	0.681	0.881	0.780	0.758	-0.168	-0.899	-0.381	2158	6.17	0.440	0.272	0.517	0.039	0.518
0.300	0.598	0.803	0.700	0.769	-0.161	-0.893	-0.401	2133	5.94	0.440	0.276	0.519	0.048	0.522
0.320	0.518	0.725	0.619	0.783	-0.152	-0.888	-0.420	2104	5.72	0.442	0.279	0.523	0.055	0.525
0.340	0.439	0.648	0.540	0.794	-0.143	-0.882	-0.438	2070	5.50	0.444	0.281	0.526	0.064	0.530
0.360	0.361	0.570	0.462	0.806	-0.136	-0.877	-0.456	2032	5.30	0.444	0.283	0.527	0.071	0.532
0.380	0.286	0.495	0.385	0.820	-0.127	-0.872	-0.472	1995	5.10	0.447	0.286	0.530	0.078	0.536
0.400	0.212	0.423	0.311	0.831	-0.120	-0.867	-0.487	1954	4.91	0.447	0.288	0.531	0.085	0.538
0.420	0.140	0.352	0.239	0.840	-0.113	-0.862	-0.502	1919	4.74	0.449	0.290	0.535	0.092	0.542
0.440	0.073	0.282	0.169	0.852	-0.108	-0.858	-0.516	1884	4.57	0.449	0.292	0.536	0.099	0.545
0.460	0.005	0.217	0.102	0.863	-0.101	-0.854	-0.529	1849	4.41	0.451	0.295	0.539	0.104	0.549
0.480	-0.058	0.151	0.036	0.873	-0.097	-0.850	-0.541	1816	4.26	0.451	0.297	0.540	0.111	0.551
0.500	-0.122	0.087	-0.025	0.884	-0.090	-0.846	-0.553	1782	4.13	0.454	0.299	0.543	0.115	0.556
0.550	-0.268	-0.063	-0.176	0.907	-0.078	-0.837	-0.579	1710	3.82	0.456	0.302	0.547	0.129	0.562
0.600	-0.401	-0.203	-0.314	0.928	-0.069	-0.830	-0.602	1644	3.57	0.458	0.306	0.551	0.143	0.569
0.650	-0.523	-0.331	-0.440	0.946	-0.060	-0.823	-0.622	1592	3.36	0.461	0.309	0.554	0.154	0.575
0.700	-0.634	-0.452	-0.555	0.962	-0.053	-0.818	-0.639	1545	3.20	0.463	0.311	0.558	0.166	0.582
0.750	-0.737	-0.562	-0.661	0.979	-0.046	-0.813	-0.653	1507	3.07	0.465	0.313	0.561	0.175	0.587
0.800	-0.829	-0.666	-0.760	0.992	-0.041	-0.809	-0.666	1476	2.98	0.467	0.315	0.564	0.184	0.593
0.850	-0.915	-0.761	-0.851	1.006	-0.037	-0.805	-0.676	1452	2.92	0.467	0.320	0.567	0.191	0.598
0.900	-0.993	-0.848	-0.933	1.018	-0.035	-0.802	-0.685	1432	2.89	0.470	0.322	0.570	0.200	0.604
0.950	-1.066	-0.932	-1.010	1.027	-0.032	-0.800	-0.692	1416	2.88	0.472	0.325	0.573	0.207	0.609
1.000	-1.133	-1.009	-1.080	1.036	-0.032	-0.798	-0.698	1406	2.90	0.474	0.325	0.575	0.214	0.613
1.100	-1.249	-1.145	-1.208	1.052	-0.030	-0.795	-0.706	1396	2.99	0.477	0.329	0.579	0.226	0.622
1.200	-1.345	-1.265	-1.315	1.064	-0.032	-0.794	-0.710	1400	3.14	0.479	0.334	0.584	0.235	0.629
1.300	-1.428	-1.370	-1.407	1.073	-0.035	-0.793	-0.711	1416	3.36	0.481	0.338	0.588	0.244	0.637
1.400	-1.495	-1.460	-1.483	1.080	-0.039	-0.794	-0.709	1442	3.62	0.484	0.341	0.592	0.251	0.643
1.500	-1.552	-1.538	-1.550	1.085	-0.044	-0.796	-0.704	1479	3.92	0.486	0.345	0.596	0.256	0.649
1.600	-1.598	-1.608	-1.605	1.087	-0.051	-0.798	-0.697	1524	4.26	0.488	0.348	0.599	0.262	0.654
1.700	-1.634	-1.668	-1.652	1.089	-0.058	-0.801	-0.689	1581	4.62	0.490	0.352	0.604	0.267	0.660
1.800	-1.683	-1.718	-1.689	1.087	-0.067	-0.804	-0.679	1644	5.01	0.493	0.355	0.607	0.269	0.664
1.900	-1.685	-1.763	-1.720	1.087	-0.074	-0.808	-0.667	1714	5.42	0.493	0.359	0.610	0.274	0.669
2.000	-1.699	-1.801	-1.743	1.085	-0.085	-0.812	-0.655	1795	5.85	0.495	0.362	0.613	0.276	0.672