MANUAL Location - Area: Zona Piacenza , magnitude (ML): 1.8
2025-03-31 17:08:40 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-03-31 17:21:52

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Earthquake info - Manual location
Event - ID :250331170647
Magnitude (ML) :1.8 +/- 0.2
Origin Time :2025-03-31 17:08:40.905 (UTC)
Location : Latitude: 44.819 N, Longitude: 9.874 E
Area :Zona Piacenza
Depth (km) :27.15
Distances (km) : 3.7 --- Lugagnano Val d Arda
3.9 --- Vernasca
4.0 --- Castell Arquato
8.3 --- Salsomaggiore Terme
10.4 --- Pellegrino Parmense
11.5 --- Alseno
11.5 --- Gropparello
12.7 --- Fiorenzuola d Arda
12.9 --- Bore
12.9 --- Carpaneto Piacentino
15.7 --- Fidenza
16.6 --- Cadeo
17.2 --- Morfasso
17.3 --- Varsi
18.0 --- Varano de Melegari
18.9 --- San Giorgio Piacentino
19.2 --- Ponte dell Olio
19.3 --- Vigolzone
19.8 --- Besenzone
20.3 --- Cortemaggiore

Quality location estimate: Erh: 1 km, Erz: 1.2 km, Nf: 43, Gap: 89 °, Rms: 0.31


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.
BVTIT2025-03-31 17:08:48.7760.0200-0.051.592025-03-31 17:08:54.9670.04000.151.4943.8
GRAMGU2025-03-31 17:08:49.4600.0271-0.400.952025-03-31 17:08:56.3520.1725-0.191.3248.3
VRLIT2025-03-31 17:08:50.9940.0200-0.321.082025-03-31 17:08:59.0410.0400-0.111.4657.8
GORRGU2025-03-31 17:08:52.0300.03510.420.912025-03-31 17:08:59.8790.18150.011.4258.6
ERBMIV2025-03-31 17:08:53.2600.0321-0.500.762025-03-31 17:09:04.5320.04000.490.8467.6
MSSAIV2025-03-31 17:08:53.1800.08740.161.462025-03-31 17:09:02.0590.2967-0.121.2368.6
CARIT2025-03-31 17:08:53.5600.02000.021.612025-03-31 17:09:02.7990.0400-0.131.4072.1
AULIT2025-03-31 17:08:53.8280.02000.061.592025-03-31 17:09:03.6460.04000.281.2373.4
GSCLGU2025-03-31 17:08:56.0920.0200-0.081.512025-03-31 17:09:08.5310.04000.490.8481.7
SARMGU2025-03-31 17:08:55.6550.0200-0.580.602025-03-31 17:09:08.0880.04000.141.3586.7
RNCAGU2025-03-31 17:08:56.7770.02001.460.112025-03-31 17:09:07.9350.04002.280.0487.0
PLMAIV2025-03-31 17:08:56.5100.04420.121.512025-03-31 17:09:07.5600.2667-0.261.1189.7
TRESNI2025-03-31 17:08:57.8500.04620.051.542025-03-31 17:09:09.2710.2797-1.510.0893.7
ZCCAIV2025-03-31 17:09:02.0080.02001.170.182025-03-31 17:09:18.4750.04001.940.08105.3
MDIIV2025-03-31 17:09:00.2700.11350.391.032025-03-31 17:09:14.2970.8469-0.380.68110.1
POPMGU2025-03-31 17:09:00.7310.1004-0.071.452025-03-31 17:09:16.4450.04000.750.53114.3
MAIMGU2025-03-31 17:09:01.7320.02001.130.192025-03-31 17:09:15.5230.04000.251.17115.3
BAG8IV2025-03-31 17:09:01.7090.12050.161.382025-03-31 17:09:17.1160.0400-0.341.03123.8
BALDNI2025-03-31 17:09:01.7700.1004-0.291.182025-03-31 17:09:16.6710.0400-1.290.12124.6
PIIIV2025-03-31 17:09:04.6800.06631.040.002025-03-31 17:09:20.6240.0400-0.410.93135.2
MUGIOCH2025-03-31 17:09:04.5600.21680.450.922025-03-31 17:09:21.1850.0400-0.271.08141.6


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
BVT ITHN1.985.67e-143.8198
GRAM GUHH1.968.15e-148.3157
GORR GUHH1.701.66e-158.6243
MSSA IVHH1.711.21e-168.6207
CAR ITHN2.052.38e-172.1198
GSCL GUHH1.565.84e-281.7132
SARM GUEH1.688.13e-286.7149
RNCA GUHH1.901.11e-187.0242
PLMA IVHH2.121.65e-189.7181
ZCCA IVHH1.704.46e-2105.3120
POPM GUHH1.737.98e-2114.3141
MAIM GUHH1.854.45e-2115.3154
PII IVHH1.893.65e-2135.2157


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 ITHNZ2.3900e-52.6830e-62.8049e-61.5200e-65.4635e-72.8331e-52.5057e-56.3971e-77.7210e-843.8198
BVT ITHNN2.3569e-55.8524e-65.4237e-62.4644e-69.3510e-77.7831e-54.6119e-51.3176e-61.5602e-743.8198
BVT ITHNE2.7051e-56.7995e-65.2216e-62.4678e-69.9015e-78.4580e-52.5367e-51.1958e-61.6903e-743.8198
GRAM GUHHZ1.7809e-53.7620e-62.9807e-68.7778e-74.0582e-74.8510e-51.8739e-55.6760e-79.0243e-848.3157
GRAM GUHHN3.2581e-57.6399e-65.6696e-61.9099e-67.8687e-79.5175e-53.1185e-51.1325e-61.8279e-748.3157
GRAM GUHHE3.1886e-57.9850e-67.3880e-62.1911e-61.0592e-66.6426e-55.7000e-51.4615e-62.0690e-748.3157
GORR GUHHZ3.0376e-61.1673e-61.1184e-65.2219e-72.3718e-79.6790e-69.1847e-63.0521e-73.1733e-858.6243
GORR GUHHN4.3006e-61.2468e-61.0688e-65.0885e-72.1234e-78.2199e-66.8191e-63.1808e-73.1571e-858.6243
GORR GUHHE4.4674e-61.4490e-61.3756e-67.6044e-72.7669e-71.1282e-57.9102e-63.4024e-74.3931e-858.6243
ERBM IVEHZ2.2488e-63.8218e-73.1338e-72.4540e-71.0177e-77.2629e-61.2189e-61.2056e-71.2075e-867.6136
ERBM IVEHN2.4571e-65.0013e-74.9357e-72.6221e-71.2028e-78.5640e-62.4599e-61.3045e-71.4591e-867.6136
ERBM IVEHE3.7207e-66.0222e-74.0980e-72.6597e-71.5028e-71.3235e-51.9303e-62.0450e-71.6610e-867.6136
MSSA IVHHZ2.8709e-69.2351e-77.9291e-75.2768e-73.8286e-77.7163e-63.6256e-67.2415e-73.1117e-868.6207
MSSA IVHHN3.1018e-61.1360e-69.6628e-73.9714e-71.8494e-78.3136e-64.7661e-62.2939e-73.4324e-868.6207
MSSA IVHHE2.2296e-69.4420e-78.3332e-76.1159e-72.3277e-75.4115e-64.1583e-63.5192e-73.0610e-868.6207
CAR ITHNZ6.4110e-61.6140e-61.2810e-64.3436e-71.9610e-71.5806e-58.1489e-62.3573e-74.6875e-872.1198
CAR ITHNN1.0349e-53.1076e-62.2363e-67.5128e-73.6606e-72.2340e-51.6342e-56.2363e-78.6551e-872.1198
CAR ITHNE9.7788e-62.4306e-61.6718e-68.5269e-76.5034e-71.8018e-51.0419e-59.7785e-76.8192e-872.1198
GSCL GUHHZ2.2218e-62.6044e-72.1517e-71.8481e-71.1241e-72.6255e-61.1362e-61.4467e-79.1496e-981.7132
GSCL GUHHN2.7901e-65.7960e-74.0132e-73.0804e-71.7868e-73.8474e-61.8860e-62.1787e-72.0406e-881.7132
GSCL GUHHE2.8069e-64.5618e-73.7009e-73.7352e-71.8134e-72.9326e-62.4850e-61.8514e-71.5701e-881.7132
SARM GUEHZ1.0683e-62.9552e-73.1368e-72.4222e-77.8023e-82.9891e-61.6251e-69.1436e-81.1694e-886.7149
SARM GUEHN1.7236e-66.3533e-77.2464e-75.7426e-71.7987e-73.1138e-62.7825e-62.3399e-72.4588e-886.7149
SARM GUEHE1.1118e-64.9054e-75.2992e-74.1742e-71.8901e-73.3467e-62.3172e-62.3338e-71.9487e-886.7149
RNCA GUHHZ2.7600e-66.4120e-76.0364e-72.5646e-71.0567e-71.0327e-52.9968e-61.1134e-71.9253e-887.0242
RNCA GUHHN4.7138e-61.3472e-69.5999e-73.3845e-71.5562e-77.7631e-65.8230e-61.9055e-73.4933e-887.0242
RNCA GUHHE5.9452e-61.4711e-61.1308e-63.6229e-71.4725e-71.5970e-56.9542e-62.0229e-73.9604e-887.0242
PLMA IVHHZ1.9844e-65.1747e-74.2916e-73.0754e-71.0425e-74.3271e-61.9246e-61.1900e-71.4935e-889.7181
PLMA IVHHN2.9096e-69.8565e-71.0684e-64.5670e-71.7210e-71.0926e-55.4665e-62.0483e-72.8113e-889.7181
PLMA IVHHE2.5748e-61.1706e-61.0822e-68.2740e-72.9207e-77.4434e-64.9658e-63.7097e-73.5914e-889.7181
ZCCA IVHHZ6.2194e-72.0977e-72.0094e-71.4427e-74.4218e-81.8354e-61.0084e-64.9209e-86.3132e-9105.3120
ZCCA IVHHN8.2151e-73.1342e-72.9313e-72.4282e-77.9923e-81.7232e-61.4045e-61.1658e-71.0610e-8105.3120
ZCCA IVHHE7.6974e-72.4839e-71.8986e-71.6379e-75.9646e-81.3051e-61.1564e-67.1649e-86.3153e-9105.3120
MDI IVHHZ4.5915e-69.7015e-71.0147e-63.1543e-71.1868e-71.2675e-56.4255e-61.6658e-72.7572e-8110.1353
MDI IVHHN8.2309e-61.5710e-61.4679e-65.1835e-72.3718e-72.4395e-57.8382e-63.1640e-74.3322e-8110.1353
MDI IVHHE1.3240e-52.8670e-62.2168e-65.2273e-72.4407e-74.1408e-51.2759e-53.6001e-76.2983e-8110.1353
POPM GUHHZ2.5277e-64.3668e-72.5933e-79.8798e-84.2916e-81.1076e-59.9316e-75.9655e-89.7906e-9114.3141
POPM GUHHN2.0685e-63.7057e-73.6486e-71.6709e-79.1728e-88.6007e-61.6767e-61.1649e-71.1892e-8114.3141
POPM GUHHE1.5620e-63.9023e-73.8024e-71.6623e-77.9004e-84.9448e-61.9636e-61.1337e-71.0928e-8114.3141
MAIM GUHHZ8.1254e-72.6972e-71.5929e-71.1476e-75.3120e-82.3034e-68.1542e-76.2214e-85.5912e-9115.3154
MAIM GUHHN1.1641e-64.1726e-73.5667e-71.9549e-77.4260e-83.1802e-62.2414e-61.1355e-71.1473e-8115.3154
MAIM GUHHE8.6184e-72.7851e-72.8557e-71.7263e-77.7571e-82.8005e-62.3667e-61.0479e-71.0119e-8115.3154
BALD NIHHZ5.0167e-61.0488e-68.1035e-73.7646e-71.6066e-71.7593e-53.9152e-62.5092e-73.0993e-8124.637
BALD NIHHN8.2333e-62.2797e-61.9284e-69.4275e-73.4398e-72.6075e-51.3731e-54.8259e-76.7040e-8124.637
BALD NIHHE1.0826e-54.3109e-63.0890e-61.5066e-66.6462e-73.0011e-51.9019e-57.9975e-71.2563e-7124.637
PII IVHHZ7.9494e-72.2898e-71.9888e-77.6468e-83.7132e-82.6274e-61.2962e-65.1458e-85.8298e-9135.2157
PII IVHHN1.5717e-63.7342e-72.3861e-71.5452e-75.9553e-82.4558e-61.6303e-66.8424e-89.0596e-9135.2157
PII IVHHE1.0188e-63.3955e-72.6883e-71.1454e-75.2361e-82.3459e-61.9190e-67.4880e-88.8501e-9135.2157
MUGIOCHHHZ1.6346e-64.7665e-73.1517e-71.2228e-75.5920e-85.2990e-61.4204e-68.0702e-81.2006e-8141.6332
MUGIOCHHHN3.9969e-65.4919e-73.0973e-71.3768e-76.0852e-84.6030e-61.4397e-68.8481e-81.4515e-8141.6332
MUGIOCHHHE3.0625e-64.0538e-73.8654e-71.5035e-77.0630e-84.9344e-62.6457e-69.2574e-81.2210e-8141.6332
*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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