MANUAL Location - Area: Frignano , magnitude (ML): 1.4
2025-09-18 00:00:51 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-09-18 08:12:02

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Earthquake info - Manual location
Event - ID :250918000030
Magnitude (ML) :1.4 +/- 0.2
Origin Time :2025-09-18 00:00:51.275 (UTC)
Location : Latitude: 44.428 N, Longitude: 10.648 E
Area :Frignano
Depth (km) :18.15
Distances (km) : 3.9 --- Prignano sulla Secchia
8.2 --- Montefiorino
8.7 --- Baiso
8.9 --- Toano
10.7 --- Carpineti
11.0 --- Polinago
11.2 --- Serramazzoni
11.3 --- Castellarano
11.7 --- Palagano
13.3 --- Viano
14.8 --- Lama Mocogno
14.9 --- Casina
15.8 --- Frassinoro
15.9 --- Villa Minozzo
16.6 --- Sassuolo
17.8 --- Casalgrande
18.0 --- Pavullo nel Frignano
18.1 --- Fiorano Modenese
19.3 --- Scandiano
19.6 --- Castelnovo ne Monti

Quality location estimate: Erh: 0.9 km, Erz: 0.9 km, Nf: 30, Gap: 111 °, Rms: 0.21


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.
GSCLGU2025-09-18 00:00:55.9000.01100.291.182025-09-18 00:00:58.6800.0591-0.081.3521.2
ERBMIV2025-09-18 00:00:56.8200.01300.181.392025-09-18 00:01:00.7700.07620.031.5126.7
ZCCAIV2025-09-18 00:00:59.4100.01701.010.002025-09-18 00:01:05.8980.04002.040.0033.3
SARMGU2025-09-18 00:00:58.5500.02000.271.302025-09-18 00:01:03.3200.1143-0.111.2438.6
VLCMN2025-09-18 00:00:58.7600.02610.071.512025-09-18 00:01:04.2320.12230.131.4241.0
BDIIV2025-09-18 00:00:59.4500.0231-0.091.332025-09-18 00:01:05.3820.2206-0.210.9945.1
POPMGU2025-09-18 00:01:00.3200.07230.271.262025-09-18 00:01:06.8560.14540.291.0947.3
FIVIGU2025-09-18 00:01:00.3360.02000.011.522025-09-18 00:01:07.0010.04000.241.2950.0
CARDGU2025-09-18 00:00:59.9520.0200-0.430.422025-09-18 00:01:06.2400.4008-0.730.3450.2
GRAMGU2025-09-18 00:01:00.5100.0251-0.041.442025-09-18 00:01:07.4160.15040.161.3050.4
EQUIGU2025-09-18 00:01:01.0580.02000.370.832025-09-18 00:01:07.2970.0400-0.071.3152.4
CAVEIV2025-09-18 00:01:04.4800.1406-0.081.272025-09-18 00:01:14.2080.0400-1.270.0359.0
MAIMGU2025-09-18 00:01:01.9370.1004-0.360.612025-09-18 00:01:10.5350.04000.321.0361.4
PIIIV2025-09-18 00:01:05.6010.0412-0.310.742025-09-18 00:01:16.0320.2446-0.300.8181.2
MSSAIV2025-09-18 00:01:07.7760.02000.091.462025-09-18 00:01:22.6220.04002.950.0092.7


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
GSCL GUHH1.761.36e+021.2209
ERBM IVEH1.667.04e-126.7267
ZCCA IVHH1.291.98e-133.3108
SARM GUEH1.583.47e-138.6216
VLC MNHH1.571.80e-141.0215
BDI IVHH1.311.46e-145.1186
POPM GUHH1.745.79e-147.3168
FIVI GUHN1.411.17e-150.0243
CARD GUHH1.339.82e-250.2196
GRAM GUHH1.291.61e-150.4279
PII IVHH1.252.85e-281.2187
MSSA IVHH1.161.72e-292.7263


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.
(°)
GSCL GUHHZ1.0283e-41.4343e-53.7996e-61.1935e-65.5175e-71.4472e-42.2112e-58.7728e-71.5799e-721.2209
GSCL GUHHN6.9326e-51.6621e-59.4216e-62.2582e-61.3473e-61.6273e-45.4288e-52.2034e-63.7568e-721.2209
GSCL GUHHE5.9927e-51.3047e-51.0582e-54.0171e-61.9965e-61.7079e-46.4176e-52.9017e-64.2759e-721.2209
ERBM IVEHZ3.5327e-56.3137e-64.5753e-62.7948e-69.3094e-71.0444e-41.6378e-51.1719e-61.6223e-726.7267
ERBM IVEHN5.3663e-51.0008e-55.6850e-62.1135e-61.0906e-61.5792e-42.5150e-51.8411e-62.8005e-726.7267
ERBM IVEHE4.3042e-51.0915e-55.2996e-62.0391e-61.5357e-61.2430e-42.7878e-52.4608e-62.5217e-726.7267
ZCCA IVHHZ7.4015e-61.3366e-68.5401e-74.1025e-71.5465e-71.6832e-55.4576e-61.9482e-72.7155e-833.3108
ZCCA IVHHN7.9062e-61.4337e-61.4718e-69.2528e-74.2799e-71.6382e-59.6344e-65.0568e-74.6743e-833.3108
ZCCA IVHHE1.0439e-51.3405e-61.3633e-61.1282e-63.9363e-71.6257e-57.9734e-64.8461e-75.0117e-833.3108
SARM GUEHZ8.4390e-61.8766e-61.8851e-68.0970e-73.7696e-72.1755e-57.9515e-65.2568e-76.0139e-838.6216
SARM GUEHN1.3311e-52.4475e-62.0807e-68.3185e-73.6016e-73.0419e-57.9400e-64.5684e-76.7487e-838.6216
SARM GUEHE1.1249e-53.6764e-62.7533e-61.3348e-66.0873e-72.6246e-51.6041e-58.3588e-71.0993e-738.6216
VLC MNHHZ5.6941e-69.7014e-77.7678e-73.9106e-71.8530e-71.4487e-53.3319e-62.3389e-72.9143e-841.0215
VLC MNHHN7.8335e-61.6524e-61.3478e-67.9097e-75.2862e-73.0069e-56.8513e-66.4002e-75.2768e-841.0215
VLC MNHHE1.0568e-52.2155e-61.3911e-64.6799e-72.8060e-74.3475e-54.6276e-63.6050e-75.3861e-841.0215
BDI IVHHZ5.3709e-61.0323e-66.9917e-72.7242e-71.5390e-71.3638e-53.5275e-61.8866e-72.4526e-845.1186
BDI IVHHN9.3795e-61.7056e-61.0770e-64.6162e-72.6449e-72.9232e-54.2896e-64.0813e-75.5257e-845.1186
BDI IVHHE8.5600e-61.7852e-61.1171e-65.0447e-72.7873e-73.1656e-57.0410e-63.6650e-74.1844e-845.1186
POPM GUHHZ1.0537e-52.5789e-61.9882e-69.5477e-73.3195e-73.0194e-51.3691e-54.7538e-77.1562e-847.3168
POPM GUHHN2.4087e-56.9442e-64.4190e-62.1240e-69.2364e-74.9161e-52.0486e-51.2531e-61.7381e-747.3168
POPM GUHHE1.4916e-53.8233e-62.8854e-68.7313e-76.2992e-73.3880e-51.6429e-51.0091e-61.0428e-747.3168
FIVI GUHNZ6.8704e-61.4704e-69.7872e-75.9516e-72.9124e-72.3830e-53.4877e-63.0818e-74.1281e-850.0243
FIVI GUHNN7.5419e-61.7679e-61.2621e-64.3759e-71.7792e-72.0155e-56.5037e-62.4035e-74.1227e-850.0243
FIVI GUHNE4.4619e-61.1487e-69.7577e-73.9622e-71.9597e-71.6463e-56.7936e-62.1572e-72.7869e-850.0243
CARD GUHHZ3.9918e-66.4765e-73.2550e-71.7102e-76.3474e-81.6090e-51.0355e-68.2889e-81.3944e-850.2196
CARD GUHHN5.5921e-69.9036e-76.0244e-72.2108e-71.0441e-71.5272e-51.8510e-61.3686e-72.4445e-850.2196
CARD GUHHE7.8919e-61.6677e-69.0232e-71.8647e-71.3754e-73.5156e-52.9656e-62.3004e-73.9410e-850.2196
GRAM GUHHZ5.5700e-61.1007e-67.9458e-72.9808e-71.2557e-79.5502e-64.6750e-61.6728e-72.7282e-850.4279
GRAM GUHHN5.0673e-61.3293e-61.2659e-66.2634e-72.5843e-71.3183e-57.1047e-63.3237e-73.6138e-850.4279
GRAM GUHHE7.2209e-61.9790e-61.6614e-67.5371e-73.3242e-71.2822e-56.4694e-64.6565e-76.4906e-850.4279
EQUI GUHHZ1.6864e-63.0444e-72.7882e-71.4175e-77.3267e-83.4646e-61.5434e-68.7426e-88.1165e-952.4234
EQUI GUHHN1.1881e-63.0951e-72.9231e-71.5898e-79.7157e-83.6648e-61.7589e-61.6107e-79.0673e-952.4234
EQUI GUHHE1.0984e-62.5129e-72.2180e-71.3008e-76.1298e-84.0822e-69.8228e-76.9918e-87.7306e-952.4234
MAIM GUHHZ8.0086e-71.6319e-71.5292e-78.0013e-83.8273e-82.8716e-68.4639e-74.7024e-85.0198e-961.4192
MAIM GUHHN1.0174e-62.2343e-71.8546e-71.0102e-74.7517e-83.9982e-69.2529e-75.0042e-86.0028e-961.4192
MAIM GUHHE1.1036e-62.5803e-72.3746e-71.0902e-75.7674e-83.2146e-61.2970e-67.5193e-88.6081e-961.4192
PII IVHHZ1.0021e-61.9765e-71.8543e-76.4679e-83.3159e-82.8518e-61.0589e-63.9168e-85.5088e-981.2187
PII IVHHN9.4530e-72.7527e-73.0473e-71.0952e-74.4769e-82.7976e-62.1796e-65.8991e-87.5992e-981.2187
PII IVHHE9.5419e-72.9032e-72.9481e-71.0747e-74.2783e-82.7607e-62.0729e-66.4000e-87.3841e-981.2187
MSSA IVHHZ7.8468e-72.0311e-71.3698e-75.5589e-82.3786e-83.1407e-65.2582e-72.6111e-84.1878e-992.7263
MSSA IVHHN4.7524e-71.5592e-71.4721e-71.1893e-74.7356e-81.4929e-67.3928e-75.1942e-85.2962e-992.7263
MSSA IVHHE4.2449e-71.2852e-71.1644e-77.0978e-82.9426e-81.6457e-66.5651e-73.9697e-83.1596e-992.7263
*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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