Table S1.  Big Bear Region 1D velocity Model 

Layer Depth Range	Vp	Vs	Density	Qp	Qs
(km)			(km/s)	(km/s)	(g/cm3)	
0.0 - 1.5		4.5	2.6	1.8	200	100
1.5 - 5.5		5.3	3.06	2.2	300	200
5.5 - 16.0		6.13	3.54	2.64	400	250
16.0-32.0		6.7	3.87	2.91	600	300
32.0-82.0		7.8	4.5	3.3	600	300