MANUAL Location - Area: Zona Genova , magnitude (ML): 0.4
2021-09-20 09:17:26 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2021-09-20 09:41:52

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Earthquake info - Manual location
Event - ID :210920091658
Magnitude (ML) :0.4 +/- 0.2
Origin Time :2021-09-20 09:17:26.879 (UTC)
Location : Latitude: 44.466 N, Longitude: 8.788 E
Area :Zona Genova
Depth (km) :4.20
Distances (km) : 3.8 --- Mele
7.3 --- Masone
9.4 --- Campomorone
9.6 --- Ceranesi
10.1 --- Genova
10.7 --- Arenzano
10.7 --- Campo Ligure
11.8 --- Mignanego
12.8 --- Serra Ricco
14.1 --- Cogoleto
14.4 --- Sant Olcese
14.5 --- Rossiglione
15.9 --- Tiglieto
15.9 --- Fraconalto
16.1 --- Urbe
17.2 --- Busalla
17.9 --- Voltaggio
18.5 --- Casella
19.0 --- Mornese
19.4 --- Casaleggio Boiro

Quality location estimate: Erh: 1.6 km, Erz: 0.7 km, Nf: 10, Gap: 159 °, Rms: 0.06


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.
RNCAGU2021-09-20 09:17:29.6300.00600.011.472021-09-20 09:17:31.5380.0400-0.031.4413.7
TSAV1GU2021-09-20 09:17:30.9770.0803-0.120.962021-09-20 09:17:34.0750.0400-0.021.3620.1
PCPGU2021-09-20 09:17:31.6700.01100.610.022021-09-20 09:17:33.9960.28770.050.6421.6
QLNOIV2021-09-20 09:17:34.5020.02000.031.312021-09-20 09:17:39.7740.0400-0.190.6738.7
GORRGU2021-09-20 09:17:35.0200.01900.021.292021-09-20 09:17:40.8610.1494-0.030.8543.3


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
RNCA GUHH0.218.49e-213.787
TSAV1GUEH0.579.64e-220.156
PCP GUHH0.103.15e-221.6294
QLNO IVHH0.371.81e-238.7246
GORR GUHH0.743.35e-243.368


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.
(°)
RNCA GUHHZ9.4529e-61.1669e-64.7764e-72.7032e-71.4248e-71.1020e-52.3477e-61.7738e-71.9587e-813.787
RNCA GUHHN5.6235e-67.5161e-77.8401e-73.3051e-71.5611e-79.1571e-65.0450e-61.9876e-72.3982e-813.787
RNCA GUHHE1.4468e-51.4178e-66.1782e-72.4447e-71.3196e-71.1298e-53.1463e-61.4932e-72.0699e-813.787
TSAV1GUEHZ6.1585e-61.2236e-64.9256e-72.7052e-71.1342e-71.5028e-51.6355e-61.3364e-71.7564e-820.156
TSAV1GUEHN4.3677e-69.2660e-78.5616e-72.6422e-71.3441e-71.1189e-57.6171e-62.0118e-72.4734e-820.156
TSAV1GUEHE4.4317e-61.0698e-69.9804e-74.4455e-71.6820e-71.5701e-57.1146e-62.3755e-72.7268e-820.156
PCP GUHHZ2.2733e-65.2666e-73.4120e-71.0187e-75.6199e-86.1121e-61.4878e-68.5215e-81.4430e-821.6294
PCP GUHHN2.2549e-64.8031e-72.9010e-71.1248e-75.8580e-86.1365e-61.1870e-66.9333e-81.1145e-821.6294
PCP GUHHE2.4945e-64.1248e-72.5556e-71.0330e-74.6739e-87.6544e-61.1851e-66.4640e-81.0876e-821.6294
QLNO IVHHZ7.0600e-71.2546e-79.6483e-83.2551e-82.0541e-82.4389e-64.7041e-72.6067e-83.2748e-938.7246
QLNO IVHHN7.2145e-71.4085e-71.1997e-74.6173e-82.3607e-82.2817e-65.3797e-73.3470e-84.1039e-938.7246
QLNO IVHHE1.0675e-62.2767e-71.3603e-75.7839e-88.2995e-82.9064e-65.3745e-71.1593e-71.5792e-838.7246
GORR GUHHZ2.3100e-63.9396e-72.1710e-79.5560e-84.2571e-82.4684e-61.1598e-64.9176e-86.3868e-943.368
GORR GUHHN2.6723e-64.5023e-73.1456e-71.7110e-75.8101e-85.7816e-61.1605e-68.2102e-81.0437e-843.368
GORR GUHHE1.9781e-63.4719e-72.3518e-71.1469e-75.1283e-83.7431e-61.0931e-66.0640e-87.6288e-943.368
*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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