CyberShake UGMS Velocity Model Data

Introduction

This wiki entry lists the velocity information for the 14 UGMS sites. Included are the original Vs, Vp, and density material properties from CVM-S4.26 as well as the properties used within the CyberShake simulations.

In order to ensure the stability of the simulations at 0.5Hz, CyberShake applies the following rules to each point in the velocity mesh:

1. Vs has a minimum of 500m/s.
2. Vp has a minimum of 1700m/s.
3. Vp cannot be less than 1.45 x Vs. If it is, then Vs is set to be Vp / 1.45.

The data below displays the site name, latitude, longitude, and depth at which we queried CVM-S4.26. The original Vs, Vp, and density from the model are displayed, followed by the material properties after the three aforementioned rules have been applied. Therefore, the CyberShake Vs, Vp, and density columns represent what was actually used in the CyberShake 14.2 simulation.

Attenuation is also set within the CyberShake code to be as follows:

• Qs = 0.05 * Vs
• Qp = 2 * Qs

These attenuation values have been calculated and appended as the last two columns of the table below.

Data

Site	Longitude	Latitude	Depth	Original Vs	Original Vp	Original Density	CyberShake Vs	CyberShake Vp	CyberShake Density	Qs	Qp
LADT	34.05204	-118.25713
			0m	230.2060	696.4910	1974.9760	500.0000	1700.0000	1974.9760	25.0000	50.0000
			200m	694.9100	2179.5250	2209.1470	694.9100	2179.5250	2209.1470	34.7455	69.4910
			400m	1247.4080	2461.8590	2280.6300	1247.4080	2461.8590	2280.6300	62.3704	124.7408
WNGC	34.04182	-118.06530
			0m	165.5870	397.9530	1927.8370	500.0000	1700.0000	1927.8370	25.0000	50.0000
			200m	651.3200	1547.9480	2109.4210	651.3200	1700.0000	2109.4210	32.5660	65.1320
			400m	908.1280	1949.9310	2172.8940	908.1280	1949.9310	2172.8940	45.4064	90.8128
PAS	34.14843	-118.17119
			0m	309.0480	543.6350	1950.8400	500.0000	1700.0000	1950.8400	25.0000	50.0000
			200m	1625.8890	4832.4410	2682.4670	1625.8890	4832.4410	2682.4670	81.2944	162.5889
			400m	2477.9350	4713.7760	2682.4700	2477.9350	4713.7760	2682.4700	123.8967	247.7935
SBSM	34.06499	-117.29201
			0m	192.8570	316.5220	1914.9790	500.0000	1700.0000	1914.9790	25.0000	50.0000
			200m	810.7210	1786.4350	2147.0780	810.7210	1786.4350	2147.0780	40.5361	81.0721
			400m	1117.3890	2123.2800	2238.7870	1117.3890	2123.2800	2238.7870	55.8695	111.7389
STNI	33.93088	-118.17881
			0m	163.2050	401.8170	1928.4470	500.0000	1700.0000	1928.4470	25.0000	50.0000
			200m	530.7270	1285.5660	2067.9910	530.7270	1700.0000	2067.9910	26.5363	53.0727
			400m	713.7520	1618.7900	2120.6070	713.7520	1700.0000	2120.6070	35.6876	71.3752
SMCA	34.00909	-118.48939
			0m	271.3170	696.4910	1974.9760	500.0000	1700.0000	1974.9760	25.0000	50.0000
			200m	641.8190	1526.5320	2106.0390	641.8190	1700.0000	2106.0390	32.0909	64.1819
			400m	891.8510	1922.9200	2168.6290	891.8510	1922.9200	2168.6290	44.5926	89.1851
CCP	34.05489	-118.41302
			0m	243.1470	596.4970	1959.1870	500.0000	1700.0000	1959.1870	25.0000	50.0000
			200m	753.0540	1687.3770	2131.4370	753.0540	1700.0000	2131.4370	37.6527	75.3054
			400m	1055.0420	2123.3300	2223.3620	1055.0420	2123.3300	2223.3620	52.7521	105.5042
COO	33.89604	-118.21639
			0m	159.0650	338.8980	1918.5120	500.0000	1700.0000	1918.5120	25.0000	50.0000
			200m	576.9450	1372.1320	2081.6600	576.9450	1700.0000	2081.6600	28.8473	57.6945
			400m	776.6420	1728.1150	2137.8690	776.6420	1728.1150	2137.8690	38.8321	77.6642
LAPD	34.55700	-118.12500
			0m	2573.6350	4452.3280	2744.7760	2573.6350	4452.3280	2744.7760	128.6818	257.3635
			200m	2573.6190	4453.7960	2744.7760	2573.6190	4453.7960	2744.7760	128.6810	257.3619
			400m	2573.6020	4455.2650	2744.7760	2573.6020	4455.2650	2744.7760	128.6801	257.3602
P22	34.18277	-118.56609
			0m	232.6130	451.0620	1936.2230	500.0000	1700.0000	1936.2230	25.0000	50.0000
			200m	1303.9240	2482.4920	2268.1060	1303.9240	2482.4920	2268.1060	65.1962	130.3924
			400m	1360.1800	2545.5670	2312.2210	1360.1800	2545.5670	2312.2210	68.0090	136.0180
s429	33.80858	-118.23333
			0m	213.0000	696.4910	1974.9760	500.0000	1700.0000	1974.9760	25.0000	50.0000
			200m	690.2730	1577.3670	2114.0660	690.2730	1700.0000	2114.0660	34.5137	69.0273
			400m	928.7830	1984.0370	2178.2790	928.7830	1984.0370	2178.2790	46.4392	92.8783
s684	33.93515	-117.40266
			0m	207.2540	348.4390	1920.0190	500.0000	1700.0000	1920.0190	25.0000	50.0000
			200m	1058.6330	5862.4270	2821.5430	1058.6330	5862.4270	2821.5430	52.9317	105.8633
			400m	3249.0520	5831.5400	2821.5470	3249.0520	5831.5400	2821.5470	162.4526	324.9052
s603	34.10275	-117.53735
			0m	207.2540	348.4390	1920.0190	500.0000	1700.0000	1920.0190	25.0000	50.0000
			200m	1049.3530	2148.9180	2246.2970	1049.3530	2148.9180	2246.2970	52.4677	104.9353
			400m	2641.2830	4788.2080	2747.6660	2641.2830	4788.2080	2747.6660	132.0642	264.1283
s758	33.37562	-117.53532
			0m	2413.4960	4082.6010	2577.6610	2413.4960	4082.6010	2577.6610	120.6748	241.3496
			200m	2413.5340	4082.6280	2577.6610	2413.5340	4082.6280	2577.6610	120.6767	241.3534
			400m	2413.5720	4082.6560	2577.6610	2413.5720	4082.6560	2577.6610	120.6786	241.3572