MANUAL Location - Area: Valle del Trebbia , magnitude (ML): 1.7
2025-08-28 02:13:39 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-08-28 09:34:18

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Earthquake info - Manual location
Event - ID :250828021316
Magnitude (ML) :1.7 +/- 0.2
Origin Time :2025-08-28 02:13:39.577 (UTC)
Location : Latitude: 44.780 N, Longitude: 9.601 E
Area :Valle del Trebbia
Depth (km) :4.32
Distances (km) : 0.7 --- Bettola
7.7 --- Farini
10.2 --- Travo
10.2 --- Morfasso
10.7 --- Ponte dell Olio
11.8 --- Gropparello
14.3 --- Rivergaro
15.2 --- Coli
15.9 --- Vigolzone
16.6 --- Bore
17.0 --- Bobbio
17.0 --- Ferriere
18.3 --- Piozzano
18.3 --- Vernasca
18.6 --- Lugagnano Val d Arda
18.6 --- Corte Brugnatella
19.4 --- Bardi
19.7 --- Agazzano
20.1 --- Pecorara
20.5 --- Gazzola

Quality location estimate: Erh: 0.8 km, Erz: 1.2 km, Nf: 50, Gap: 117 °, Rms: 0.26


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.
BVTIT2025-08-28 02:13:45.7670.0200-0.061.602025-08-28 02:13:50.9420.04000.301.1630.4
GORRGU2025-08-28 02:13:46.1800.01600.121.662025-08-28 02:13:50.8310.0400-0.450.5531.4
VRLIT2025-08-28 02:13:47.9250.02000.231.392025-08-28 02:13:54.2120.04000.231.3643.3
TGLIT2025-08-28 02:13:48.2210.0200-0.051.622025-08-28 02:13:54.7570.0400-0.350.7944.3
GRAMGU2025-08-28 02:13:48.9300.02510.131.652025-08-28 02:13:56.5740.04000.860.1449.1
MSSAIV2025-08-28 02:13:49.2700.02610.041.712025-08-28 02:13:56.8700.15840.051.4252.2
SARZIV2025-08-28 02:13:50.7970.02000.281.222025-08-28 02:14:00.9200.04001.720.1155.2
RNSIT2025-08-28 02:13:50.3110.0200-0.071.542025-08-28 02:13:58.4420.0400-0.490.5556.6
CARIT2025-08-28 02:13:50.2330.0200-0.031.622025-08-28 02:13:58.5410.04000.041.5159.4
RNCAGU2025-08-28 02:13:51.0300.03110.011.672025-08-28 02:13:59.8440.04000.081.4862.0
ERBMIV2025-08-28 02:13:54.0900.03810.001.592025-08-28 02:14:06.0420.04001.060.1375.9
EQUIGU2025-08-28 02:13:53.9160.0200-0.201.162025-08-28 02:14:03.8400.3567-0.880.2881.2
PLMAIV2025-08-28 02:13:56.3000.02001.900.122025-08-28 02:14:05.2620.0400-0.480.6283.7
PCPGU2025-08-28 02:13:54.9630.0200-0.310.882025-08-28 02:14:07.1460.0400-0.081.2687.7
GSCLGU2025-08-28 02:13:56.7100.0462-0.270.992025-08-28 02:14:10.5630.04000.251.1291.7
SARMGU2025-08-28 02:13:55.9400.0462-0.021.532025-08-28 02:14:07.8400.3287-0.270.9091.9
VLCMN2025-08-28 02:13:56.1680.02000.241.332025-08-28 02:14:09.6500.04001.690.1193.1
CARDGU2025-08-28 02:14:00.7430.02002.180.092025-08-28 02:14:15.2170.04002.490.05109.3
MDIIV2025-08-28 02:14:00.5800.05520.021.452025-08-28 02:14:15.6880.8739-1.110.32110.5
QLNOIV2025-08-28 02:13:59.3700.05620.011.482025-08-28 02:14:10.8860.0400-3.230.00111.6
POPMGU2025-08-28 02:14:01.3700.06230.221.302025-08-28 02:14:19.3420.04002.050.00123.0
MUGIOCH2025-08-28 02:14:02.6120.0200-1.770.002025-08-28 02:14:20.0710.0400-3.300.00134.3
PIIIV2025-08-28 02:14:03.2700.0693-0.500.582025-08-28 02:14:20.2380.0400-1.590.00138.8


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.		 Dist. (km) Azimuth
BVT ITHN1.604.85e-130.4158
GORR GUHH1.564.14e-131.4232
GRAM GUHH1.937.36e-149.1131
MSSA IVHH1.601.67e-152.2187
SARZ IVHH1.802.35e-155.2280
RNS ITHN1.531.21e-156.6249
CAR ITHN1.751.80e-159.4179
RNCA GUHH1.509.28e-262.0236
ERBM IVEH1.495.87e-275.9122
EQUI GUHH1.576.03e-281.2147
PLMA IVHH1.871.09e-183.7166
PCP GUHH1.132.01e-287.7253
SARM GUEH1.799.09e-291.9136
VLC MNHH1.512.72e-293.1138
CARD GUHH2.048.81e-2109.3140
MDI IVHH2.141.08e-1110.55
POPM GUHH1.746.68e-2123.0131
PII IVHH1.883.31e-2138.8148


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.
(°)
BVT ITHNZ9.8487e-61.9990e-62.1544e-61.7667e-69.9109e-72.0093e-51.1282e-51.5861e-61.0803e-730.4158
BVT ITHNN1.6141e-54.5319e-64.0973e-62.3582e-61.0961e-64.6964e-52.3602e-51.0839e-61.1100e-730.4158
BVT ITHNE2.1929e-54.8284e-64.1634e-62.1413e-69.1011e-75.9096e-52.4541e-51.0453e-61.6129e-730.4158
GORR GUHHZ5.3502e-57.7166e-62.5929e-61.1596e-64.8397e-75.8108e-51.2677e-56.4852e-79.9293e-831.4232
GORR GUHHN2.3429e-53.7540e-63.0616e-61.3175e-66.8307e-78.4181e-51.4904e-59.3658e-78.5711e-831.4232
GORR GUHHE2.9397e-56.7176e-64.0077e-61.8761e-67.2273e-78.5034e-51.4873e-51.0454e-61.4457e-731.4232
TGL ITHNZ1.0894e-51.4300e-68.7468e-74.3610e-72.7911e-71.2084e-55.1231e-63.2343e-73.7548e-844.3232
TGL ITHNN6.2874e-61.4133e-61.2496e-65.5947e-72.4294e-72.0229e-59.8445e-63.0269e-74.0975e-844.3232
TGL ITHNE1.1656e-51.5377e-61.5291e-68.8175e-74.8412e-71.6344e-57.8870e-66.4060e-74.6428e-844.3232
GRAM GUHHZ2.7164e-53.1742e-62.6444e-69.0331e-73.6254e-73.6332e-51.3831e-54.9722e-78.6219e-849.1131
GRAM GUHHN1.9554e-54.9072e-64.9696e-61.4236e-65.6098e-74.9299e-54.4382e-58.1972e-71.2264e-749.1131
GRAM GUHHE3.6797e-59.6722e-66.5601e-62.0490e-68.8228e-77.8819e-53.3266e-51.3921e-62.3349e-749.1131
MSSA IVHHZ4.8362e-61.2198e-69.9042e-74.2709e-71.9968e-71.5902e-54.3565e-62.8433e-73.4140e-852.2187
MSSA IVHHN6.0155e-61.2855e-61.0303e-63.0303e-71.6890e-71.9543e-55.6633e-62.4987e-73.4262e-852.2187
MSSA IVHHE6.4913e-61.7746e-61.1498e-66.7056e-72.8704e-71.5348e-54.7332e-63.7331e-74.2474e-852.2187
SARZ IVHHZ4.2287e-61.0295e-61.0620e-66.8461e-72.6561e-72.2535e-55.9167e-63.2508e-73.8188e-855.2280
SARZ IVHHN6.7302e-61.7469e-62.1607e-61.3675e-65.6356e-73.6423e-51.4184e-55.7828e-76.0864e-855.2280
SARZ IVHHE3.3971e-61.3531e-61.6387e-61.0403e-63.7794e-71.2289e-51.1666e-54.5229e-74.6614e-855.2280
RNS ITHNZ3.4982e-68.0202e-78.4888e-74.1307e-72.1801e-77.6584e-65.6888e-62.7832e-72.4722e-856.6249
RNS ITHNN3.7895e-61.2366e-61.0012e-65.3255e-73.0194e-77.5029e-65.9604e-64.5216e-74.0565e-856.6249
RNS ITHNE3.8496e-61.1455e-61.2243e-66.0133e-72.4017e-78.6660e-68.3947e-62.8834e-73.1818e-856.6249
CAR ITHNZ7.0351e-61.4420e-61.1728e-64.5813e-72.5387e-72.3582e-55.9661e-62.6337e-73.5317e-859.4179
CAR ITHNN1.1905e-52.0345e-61.5625e-69.5879e-77.0599e-73.9808e-59.3410e-69.3668e-77.2548e-859.4179
CAR ITHNE9.1469e-61.9451e-61.7752e-67.0686e-73.3642e-72.7974e-58.2630e-64.4809e-75.1197e-859.4179
RNCA GUHHZ3.3422e-65.4017e-73.6807e-71.5067e-78.3178e-81.0310e-51.6238e-61.0579e-71.5369e-862.0236
RNCA GUHHN2.8285e-66.1687e-75.0762e-72.0869e-79.8928e-87.5624e-62.5819e-61.1681e-71.3756e-862.0236
RNCA GUHHE4.6153e-61.2375e-68.1553e-72.7656e-71.2036e-71.5223e-53.5272e-61.7818e-72.9836e-862.0236
ERBM IVEHZ2.7829e-65.1614e-73.3244e-71.6675e-71.1674e-71.1099e-51.0596e-61.4802e-71.1937e-875.9122
ERBM IVEHN2.3179e-64.8353e-75.1828e-72.4576e-71.0305e-71.2574e-52.2148e-61.7053e-71.7292e-875.9122
ERBM IVEHE2.6421e-64.9500e-74.0512e-72.2058e-71.3044e-71.2978e-51.5046e-61.8020e-71.7606e-875.9122
EQUI GUHHZ1.7129e-63.0548e-73.3175e-71.5617e-77.2517e-82.7444e-62.1966e-69.0969e-81.1616e-881.2147
EQUI GUHHN1.7415e-65.1693e-74.7160e-72.6209e-71.2712e-74.8388e-63.4365e-61.5209e-71.7353e-881.2147
EQUI GUHHE2.0153e-64.6112e-74.0304e-71.9799e-78.6240e-85.0765e-62.7759e-61.0902e-71.2151e-881.2147
PLMA IVHHZ4.5498e-65.1017e-74.9108e-72.0010e-79.5734e-87.3857e-63.9027e-61.2731e-71.4771e-883.7166
PLMA IVHHN5.0013e-69.1011e-79.7194e-73.8460e-72.0153e-71.7935e-55.4689e-62.8729e-72.4687e-883.7166
PLMA IVHHE3.8933e-61.0875e-69.5928e-73.6671e-71.7800e-71.1583e-54.1023e-62.5136e-73.3474e-883.7166
PCP GUHHZ1.2325e-61.8295e-71.9038e-71.2535e-74.4400e-84.4011e-67.8651e-75.5406e-85.5421e-987.7253
PCP GUHHN7.2638e-71.4629e-71.7654e-71.1256e-74.3578e-82.4124e-69.0232e-75.3389e-85.6353e-987.7253
PCP GUHHE1.0281e-61.8269e-71.8493e-79.0896e-83.7891e-84.3579e-69.6805e-74.4147e-85.4526e-987.7253
GSCL GUHHZ6.2824e-71.8199e-71.8921e-71.2032e-75.3973e-81.5766e-61.3425e-67.7842e-87.8705e-991.7121
GSCL GUHHN9.4704e-73.9427e-73.2333e-72.0007e-78.7208e-81.8790e-62.3480e-61.1216e-71.5426e-891.7121
GSCL GUHHE7.1157e-73.4986e-72.8375e-72.2910e-71.0438e-71.7004e-61.7283e-61.2525e-71.1647e-891.7121
SARM GUEHZ9.0274e-72.4240e-72.9404e-71.9419e-77.6310e-81.8360e-61.8538e-68.9593e-81.1340e-891.9136
SARM GUEHN1.9718e-68.6537e-76.9402e-74.5102e-71.7529e-73.4606e-63.0669e-62.0719e-72.2638e-891.9136
SARM GUEHE8.8763e-73.7488e-73.6557e-72.6694e-71.0090e-72.0926e-62.6531e-61.2793e-71.1708e-891.9136
VLC MNHHZ6.8321e-71.4454e-71.3722e-79.7157e-84.9344e-82.4016e-65.9008e-74.9336e-84.2462e-993.1138
VLC MNHHN8.9242e-72.6804e-72.3065e-71.5435e-78.5021e-82.2182e-61.6472e-68.4291e-81.0176e-893.1138
VLC MNHHE1.6970e-62.5664e-71.8145e-71.4238e-76.3568e-82.1811e-61.0445e-67.3238e-86.7082e-993.1138
CARD GUHHZ2.1498e-65.6929e-73.8849e-72.2494e-78.2947e-85.5918e-61.8392e-61.0164e-71.3766e-8109.3140
CARD GUHHN3.5045e-69.3869e-78.3955e-73.4535e-71.3494e-71.3671e-52.9804e-61.8566e-72.4282e-8109.3140
CARD GUHHE3.6739e-68.9807e-77.9855e-73.8192e-71.5305e-71.2336e-53.3627e-62.0528e-72.8670e-8109.3140
MDI IVHHZ1.2243e-63.7025e-73.6909e-71.5705e-75.6425e-84.0294e-61.7127e-67.4483e-81.0096e-8110.55
MDI IVHHN2.1851e-65.9002e-75.4742e-71.7894e-77.3667e-86.3023e-63.4579e-61.1000e-71.5676e-8110.55
MDI IVHHE3.0845e-69.0126e-79.7362e-73.8357e-71.4875e-79.6253e-66.2063e-62.2672e-72.8499e-8110.55
QLNO IVHHZ2.5539e-63.0140e-71.6543e-78.7902e-84.2660e-87.2222e-67.5281e-74.7997e-86.3970e-9111.6243
QLNO IVHHN1.8032e-62.7261e-71.7390e-78.5043e-85.0973e-84.8986e-67.9948e-75.5591e-86.1157e-9111.6243
QLNO IVHHE2.9900e-63.8968e-71.6579e-77.0120e-84.5404e-85.2232e-68.7000e-76.3307e-87.5454e-9111.6243
POPM GUHHZ1.4492e-63.3193e-72.0318e-79.4259e-85.4196e-85.4906e-61.2111e-68.4377e-89.8512e-9123.0131
POPM GUHHN1.5271e-64.5974e-72.8736e-71.1769e-75.5149e-84.4508e-61.0729e-66.9358e-88.5279e-9123.0131
POPM GUHHE1.9267e-66.2611e-72.7844e-71.3502e-76.9792e-82.5461e-61.9627e-69.3962e-81.2441e-8123.0131
MUGIOCHHHZ7.2218e-72.6069e-71.6975e-71.3334e-75.0753e-81.9149e-67.7495e-76.0124e-86.4366e-9134.3341
MUGIOCHHHN7.9196e-72.5848e-72.1453e-71.6042e-77.3415e-81.6169e-61.3384e-69.3542e-81.0120e-8134.3341
MUGIOCHHHE6.6177e-71.8379e-71.7069e-77.4040e-83.5231e-81.6307e-61.2246e-64.3517e-86.4907e-9134.3341
PII IVHHZ8.2093e-72.7176e-71.9999e-76.8593e-83.8227e-81.8065e-61.5597e-66.1087e-87.2823e-9138.8148
PII IVHHN8.8603e-73.3860e-71.9535e-71.1396e-75.5846e-81.3378e-61.4684e-66.7500e-89.3127e-9138.8148
PII IVHHE9.1082e-72.3114e-72.1288e-79.6883e-84.3429e-81.5940e-61.3239e-65.2227e-86.1230e-9138.8148
*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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