Difference of horizontal-to-vertical spectral ratios of observed earthquakes and microtremors and its application to S-wave velocity inversion based on the diffuse field concept

Kawase, Hiroshi; Mori, Yuta; Nagashima, Fumiaki

doi:10.1186/s40623-017-0766-4

Earth, Planets and Space

Table 4 Initial underground structures based on the previous study at each site (Satoh et al. 2001)

From: Difference of horizontal-to-vertical spectral ratios of observed earthquakes and microtremors and its application to S-wave velocity inversion based on the diffuse field concept

No.	Thickness (m)	Depth (m)	Vp (m/s)	Vs (m/s)	Density (g/cm³)	No.	Thickness (m)	Depth (m)	Vp (m/s)	Vs (m/s)	Density (g/cm³)
ARAH						NAKA
1	2.0	2.0	290.0	122.8	1.70	1	2.2	2.2	320.0	70.7	1.70
2	4.0	6.0	1570.0	161.0	1.80	2	3.4	5.6	970.0	163.8	1.70
3	8.0	16.0	1570.0	261.4	1.80	3	3.1	8.7	970.0	209.7	1.90
4	6.9	22.9	1570.0	192.1	1.75	4	6.8	15.5	1550.0	209.7	1.90
5	4.9	27.8	1150.0	192.1	1.75	5	8.3	23.8	1550.0	172.9	1.80
6	5.3	33.1	1150.0	105.5	1.75	6	5.2	29.0	1650.0	220.0	1.80
7	3.9	37.0	1660.0	397.4	1.95	7	8.8	37.8	1650.0	337.4	1.90
8	14.7	51.7	1660.0	570.0	1.90	8	8.7	46.5	1650.0	319.5	1.80
9	25.9	77.6	1880.0	610.0	1.85	9	14.6	61.1	2150.0	487.3	1.95
10	180.2	257.8	2000.0	850.0	2.10	10	100.0	161.1	2000.0	850.0	2.10
11	294.4	552.2	3300.0	1700.0	2.34	11	200.0	361.1	3300.0	1700.0	2.34
12	∞	∞	6100.0	3500.0	2.70	12	∞	∞	6100.0	3500.0	2.70
SHIR						TRMA
1	2.8	2.8	180.0	101.1	1.65	1	1.3	1.3	290.0	87.4	1.60
2	7.2	10.0	1310.0	171.7	1.70	2	0.7	2.0	290.0	87.4	1.75
3	3.3	13.3	1310.0	274.0	1.80	3	2.3	4.3	690.0	87.4	1.75
4	2.7	16.0	1970.0	274.0	1.85	4	12.0	16.3	1630.0	184.1	1.75
5	4.0	20.0	1970.0	464.1	2.00	5	3.0	19.3	1630.0	243.6	1.70
6	18.0	38.0	1970.0	538.8	2.00	6	5.2	24.5	1630.0	186.4	1.70
7	22.5	60.5	1830.0	477.1	2.00	7	21.5	46.0	1870.0	398.1	1.90
8	3.0	63.5	2000.0	612.1	2.10	8	12.8	58.8	1870.0	604.4	2.00
9	9.1	72.6	2000.0	612.1	2.15	9	2.7	61.5	1870.0	363.3	1.90
10	3.4	76.0	2000.0	612.1	2.10	10	4.4	65.9	1870.0	563.8	2.00
11	351.0	427.0	2000.0	850.0	2.10	11	5.4	71.3	1870.0	384.2	1.85
12	677.0	1104.0	3300.0	1700.0	2.34	12	7.7	79.0	1870.0	416.0	1.90
13	∞	∞	6100.0	3500.0	2.70	13	158.1	237.1	2000.0	850.0	2.10
						14	300.0	537.1	3300.0	1700.0	2.34
						15	∞	∞	6100.0	3500.0	2.70
MYG015						NAGA
1	2.0	2.0	370.0	100.0	1.56	1	8.0	8.0	240.0	81.9	1.65
2	2.0	4.0	1600.0	100.0	1.62	2	4.1	12.1	920.0	81.9	1.65
3	4.0	8.0	1600.0	180.0	1.74	3	4.4	16.5	1600.0	271.6	1.95
4	9.0	17.0	1600.0	250.0	1.85	4	11.0	27.5	1050.0	154.2	1.70
5	79.1	96.1	1600.0	410.0	1.97	5	8.2	35.7	1640.0	287.0	1.75
6	266.0	362.1	2000.0	850.0	2.10	6	28.0	63.7	1990.0	581.1	2.10
7	565.9	927.0	3300.0	1700.0	2.34	7	24.5	88.2	1700.0	515.5	1.95
8	∞	∞	6100.0	3500.0	2.70	8	370.0	458.2	2000.0	850.0	2.10
						9	740.0	1198.2	3300.0	1700.0	2.34
						10	∞	∞	6100.0	3500.0	2.70

Back to article page