MANUAL Location - Area: Valle del Trebbia , magnitude (ML): 1.1
2026-03-03 04:06:02 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2026-03-03 07:25:43

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Earthquake info - Manual location
Event - ID :260303040515
Magnitude (ML) :1.1 +/- 0.2
Origin Time :2026-03-03 04:06:02.821 (UTC)
Location : Latitude: 44.783 N, Longitude: 9.485 E
Area :Valle del Trebbia
Depth (km) :16.95
Distances (km) : 6.9 --- Coli
7.9 --- Bobbio
9.8 --- Bettola
10.0 --- Travo
10.2 --- Farini
11.1 --- Corte Brugnatella
13.0 --- Pecorara
13.9 --- Romagnese
15.3 --- Ferriere
15.7 --- Cerignale
15.9 --- Ponte dell Olio
16.0 --- Piozzano
16.2 --- Menconico
16.6 --- Rivergaro
16.7 --- Brallo di Pregola
18.4 --- Nibbiano
18.4 --- Morfasso
18.5 --- Agazzano
19.2 --- Santa Margherita di Staffora
19.4 --- Pianello Val Tidone

Quality location estimate: Erh: 0.9 km, Erz: 0.7 km, Nf: 24, Gap: 94 °, Rms: 0.17


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.
GORRGU2026-03-03 04:06:08.7800.01600.061.282026-03-03 04:06:13.0790.0902-0.260.9830.4
BVTIT2026-03-03 04:06:10.1630.0200-0.071.352026-03-03 04:06:15.8330.04000.021.2839.0
TGLIT2026-03-03 04:06:10.4110.0200-0.270.912026-03-03 04:06:16.5660.0400-0.081.2841.6
VRLIT2026-03-03 04:06:11.5620.02000.001.372026-03-03 04:06:18.3640.04000.200.9348.0
MSSAIV2026-03-03 04:06:12.2400.0814-0.350.732026-03-03 04:06:19.8420.2977-0.250.8454.9
RNCAGU2026-03-03 04:06:13.3800.05820.290.662026-03-03 04:06:20.4940.1775-0.041.1057.3
GRAMGU2026-03-03 04:06:13.7700.02910.290.662026-03-03 04:06:21.2960.0400-0.031.2158.7
PCPGU2026-03-03 04:06:16.9700.0412-0.011.292026-03-03 04:06:27.1740.0400-0.061.1081.0
PLMAIV2026-03-03 04:06:18.0900.0442-0.051.272026-03-03 04:06:28.6090.0400-0.490.5388.2
EQUIGU2026-03-03 04:06:18.2200.0442-0.121.222026-03-03 04:06:29.4700.2867-0.100.8688.4
MUGIOCH2026-03-03 04:06:25.1900.0663-0.470.542026-03-03 04:06:40.9130.0400-2.230.00132.4
GARGNI2026-03-03 04:06:26.4500.0683-0.111.082026-03-03 04:06:42.9660.0400-1.710.00137.7


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.		 Dist. (km) Azimuth
GORR GUHH1.292.36e-130.4218
BVT ITHN1.321.58e-139.0144
TGL ITHN1.311.34e-141.6222
MSSA IVHH0.953.34e-254.9177
RNCA GUHH1.245.99e-257.3231
PCP GUHH0.719.27e-381.0250
PLMA IVHH1.181.99e-288.2160
EQUI GUHH0.931.14e-288.4142


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.
(°)
GORR GUHHZ2.5640e-52.7845e-61.3175e-64.0261e-71.7868e-73.4653e-56.9081e-62.4520e-74.1082e-830.4218
GORR GUHHN2.2151e-52.8594e-62.2541e-69.0521e-73.3656e-74.8988e-58.8876e-64.4998e-77.5499e-830.4218
GORR GUHHE1.2282e-52.8681e-62.1245e-66.8965e-72.8704e-75.7546e-59.7931e-64.1512e-76.5770e-830.4218
BVT ITHNZ8.0817e-65.9982e-75.2871e-72.9890e-71.4355e-77.8011e-63.3125e-61.4416e-71.8303e-839.0144
BVT ITHNN3.5240e-61.1070e-69.6172e-75.5705e-71.9959e-71.0291e-55.9642e-62.6995e-72.9957e-839.0144
BVT ITHNE4.6962e-61.4837e-61.1834e-65.3375e-72.4745e-71.5217e-57.1854e-63.3301e-74.7345e-839.0144
TGL ITHNZ3.0816e-67.2870e-75.9739e-73.3264e-71.8283e-78.2972e-64.1040e-62.1478e-71.8871e-841.6222
TGL ITHNN5.6626e-61.4820e-61.2101e-65.4680e-72.6305e-71.2670e-57.4615e-63.5731e-74.5509e-841.6222
TGL ITHNE5.1384e-69.4500e-79.2773e-74.5646e-72.1334e-71.3385e-55.2090e-62.9437e-73.0938e-841.6222
MSSA IVHHZ1.3754e-62.6082e-71.7626e-71.3477e-78.2349e-83.5893e-68.1333e-71.0285e-78.4058e-954.9177
MSSA IVHHN1.4264e-63.4987e-72.8076e-71.5297e-75.7029e-83.5765e-69.0259e-76.4244e-81.0280e-854.9177
MSSA IVHHE1.3689e-62.7248e-72.4011e-71.4549e-77.0976e-83.9268e-68.4295e-78.2580e-87.8035e-954.9177
RNCA GUHHZ1.8104e-63.5464e-72.5786e-79.4788e-83.5811e-85.8121e-61.2161e-64.9917e-89.4286e-957.3231
RNCA GUHHN1.8234e-66.1310e-74.5929e-71.8937e-79.1334e-83.5362e-63.1021e-61.1572e-71.6939e-857.3231
RNCA GUHHE3.8070e-67.3641e-75.8335e-71.4651e-77.1059e-81.0710e-53.2307e-61.1164e-71.8495e-857.3231
PCP GUHHZ6.3267e-78.9927e-87.2739e-86.4759e-86.1478e-81.1264e-63.7258e-77.1675e-87.2182e-981.0250
PCP GUHHN4.4174e-78.9075e-88.1027e-83.9660e-81.8732e-81.1458e-64.5157e-72.7038e-82.6424e-981.0250
PCP GUHHE5.9396e-71.0910e-78.1822e-83.8797e-81.5493e-81.9592e-65.0290e-72.3920e-82.5746e-981.0250
PLMA IVHHZ1.2104e-62.4843e-79.0848e-85.6975e-85.1919e-82.4222e-64.0544e-79.5045e-84.0495e-988.2160
PLMA IVHHN1.2755e-62.0910e-71.7797e-78.4877e-86.7086e-83.0596e-61.1233e-67.1343e-85.5652e-988.2160
PLMA IVHHE8.4614e-71.9388e-71.5138e-78.7760e-86.5051e-82.8153e-68.0436e-77.5366e-87.0104e-988.2160
EQUI GUHHZ3.7588e-76.3275e-85.4195e-83.3286e-82.2141e-81.1684e-62.3887e-72.2950e-82.2375e-988.4142
EQUI GUHHN3.2476e-77.9520e-87.4861e-85.5201e-83.9846e-88.1899e-75.0269e-75.0813e-82.8532e-988.4142
EQUI GUHHE3.9326e-71.3173e-79.4574e-81.1536e-77.1024e-81.2087e-65.3434e-79.8329e-84.5645e-988.4142
MUGIOCHHHZ4.5587e-76.5011e-84.9677e-82.8158e-89.9359e-91.1111e-62.2182e-71.1429e-81.8541e-9132.4345
MUGIOCHHHN6.4831e-78.6255e-85.8311e-83.7909e-81.2748e-89.8188e-72.3504e-71.4868e-82.3200e-9132.4345
MUGIOCHHHE4.5017e-78.0706e-87.1253e-84.6703e-81.8133e-81.0755e-63.9876e-72.0253e-82.6212e-9132.4345
GARG NIEHZ1.4806e-63.1011e-72.0093e-75.6048e-82.5582e-85.4406e-61.3146e-63.8974e-87.0875e-9137.742
GARG NIEHN4.4878e-79.4461e-87.9676e-86.2533e-83.3648e-89.2067e-74.2536e-74.5894e-82.6094e-9137.742
GARG NIEHE1.5112e-62.6708e-72.3867e-78.0074e-84.4368e-82.9505e-61.9507e-65.6790e-86.5099e-9137.742
*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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