MANUAL Location - Area: Val di Taro , magnitude (ML): 0.7
2021-07-18 12:12:02 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2021-07-19 10:27:00

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Earthquake info - Manual location
Event - ID :210718121048
Magnitude (ML) :0.7 +/- 0.1
Origin Time :2021-07-18 12:12:02.651 (UTC)
Location : Latitude: 44.524 N, Longitude: 9.590 E
Area :Val di Taro
Depth (km) :23.47
Distances (km) : 3.7 --- Bedonia
5.0 --- Tornolo
6.4 --- Compiano
11.5 --- Santo Stefano d Aveto
12.1 --- Albareto
14.5 --- Borgo Val di Taro
15.5 --- Ferriere
16.1 --- Rezzoaglio
16.2 --- Varese Ligure
16.4 --- Bardi
19.6 --- Borzonasca
21.1 --- Maissana
21.3 --- Farini
22.8 --- Fontanigorda
22.9 --- Mezzanego
23.3 --- Ottone
23.4 --- Zeri
23.7 --- Valmozzola
23.9 --- Morfasso
25.0 --- Ne

Quality location estimate: Erh: 1.4 km, Erz: 2.1 km, Nf: 10, Gap: 154 °, Rms: 0.15


Manual location results
Station Net P arrival time P pick
err
P pick
weight
P res Nll
weight
S arrival time S pick
err
S pick
weight
S res Nll
weight
Dist.
MSSAIV2021-07-18 12:12:08.7000.01700.011.872021-07-18 12:12:11.7940.0400-1.400.0134.1
GORRGU2021-07-18 12:12:09.5700.04320.590.022021-07-18 12:12:13.6400.1143-0.141.3834.9
BOBIV2021-07-18 12:12:09.8200.22590.011.292021-07-18 12:12:15.3300.1133-0.011.5338.2
PLMAGU2021-07-18 12:12:13.4180.02000.041.692021-07-18 12:12:20.3480.0400-0.610.3361.4
EQUIGU2021-07-18 12:12:13.8600.0200-0.091.632021-07-18 12:12:21.1540.0400-0.770.2564.4


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
GORR GUHH0.553.29e-234.9292
BOB IVHH0.814.64e-238.2338


Results of PGA, PGV, IH, spectral amplitudes (SA) values calculation
Station Net Channel PGA
(g)
PGV
(m/s)
IH 0*
(m)
IH 1*
(m)
IH 2*
(m)
Sa(T=0.10)
(g)
Sa(T=0.30)
(g)
Sa(T=1.00)
(g)
Sa(T=3.00)
(g)
Dist.
(km)
Azim.
(°)
MSSA IVHHZ1.4300e-51.3400e-62.0004e-77.2364e-83.5788e-81.5067e-57.0079e-78.5818e-82.6271e-834.1194
MSSA IVHHN2.2542e-53.3578e-61.0257e-62.4148e-71.4841e-78.4307e-53.0951e-62.7023e-76.8735e-834.1194
MSSA IVHHE3.3338e-54.5364e-61.2244e-63.2460e-71.9799e-71.0176e-43.7592e-63.6815e-78.7369e-834.1194
GORR GUHHZ2.1907e-62.9456e-71.7539e-78.2288e-83.9007e-84.3361e-67.2149e-75.9247e-86.2831e-934.9292
GORR GUHHN3.4006e-64.8145e-72.9860e-79.5997e-85.1374e-81.1407e-51.6305e-67.5191e-81.1711e-834.9292
GORR GUHHE2.7034e-64.5510e-72.7947e-79.0063e-83.9858e-89.3856e-61.2781e-66.3574e-81.0477e-834.9292
BOB IVHHZ2.1753e-62.9455e-72.0879e-77.1608e-83.4766e-85.1574e-61.3990e-64.3235e-87.3828e-938.2338
BOB IVHHN6.1156e-66.7487e-73.7118e-71.4476e-76.4871e-87.6326e-61.5096e-69.3785e-81.3420e-838.2338
BOB IVHHE5.0954e-65.6260e-74.0466e-72.0095e-78.8146e-88.5135e-62.1160e-61.2798e-71.8339e-838.2338
PLMA GUHHZ1.0464e-61.3201e-79.3498e-88.4718e-87.6860e-81.7772e-64.4252e-71.1380e-75.4670e-961.4158
PLMA GUHHN1.7419e-63.8366e-71.3605e-72.2898e-72.7643e-73.5888e-64.2258e-74.9126e-71.8924e-861.4158
PLMA GUHHE1.7587e-62.1013e-71.3375e-71.1967e-71.2749e-73.7380e-64.8870e-71.6051e-78.6516e-961.4158
EQUI GUHHZ4.5374e-75.6934e-82.4768e-81.5598e-81.2360e-86.0013e-71.0534e-71.9739e-81.5401e-964.4131
EQUI GUHHN2.3040e-72.9315e-82.0220e-81.2215e-81.1576e-83.9818e-71.1934e-71.6973e-88.1654e-1064.4131
EQUI GUHHE5.3560e-78.5121e-83.9527e-81.6099e-81.6695e-88.3852e-71.9332e-73.0508e-81.7486e-964.4131
*IH (Housner Intensity) calculated on the velocity spectrum (SV) between 0.1 and 0.5 s (IH0), 0.1 and 1.0 s (IH1), 0.1 and 1.5 s (IH2)

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