MANUAL Location - Area: Montefeltro , magnitude (ML): 1.9
2025-12-05 01:13:02 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-12-05 07:25:28

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Earthquake info - Manual location
Event - ID :251205011253
Magnitude (ML) :1.9 +/- 0.1
Origin Time :2025-12-05 01:13:02.886 (UTC)
Location : Latitude: 43.831 N, Longitude: 11.992 E
Area :Montefeltro
Depth (km) :8.14
Distances (km) : 3.4 --- Bagno di Romagna
4.2 --- Verghereto
13.9 --- Casteldelci
14.5 --- Santa Sofia
15.6 --- Chiusi della Verna
15.7 --- Sarsina
17.9 --- Sant Agata Feltria
18.2 --- Pieve Santo Stefano
19.6 --- Galeata
20.1 --- Civitella di Romagna
20.4 --- Bibbiena
20.8 --- Chitignano
20.8 --- Badia Tedalda
21.0 --- Caprese Michelangelo
21.5 --- Poppi
22.0 --- Pennabilli
22.1 --- Mercato Saraceno
22.1 --- Pratovecchio
22.9 --- Stia
23.4 --- Castel Focognano

Quality location estimate: Erh: 3.6 km, Erz: 3 km, Nf: 23, Gap: 254 °, Rms: 0.40


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.
LMDIV2025-12-05 01:13:10.3600.01900.011.642025-12-05 01:13:16.2000.1153-0.241.2636.5
RUFIIV2025-12-05 01:13:10.8000.02310.341.042025-12-05 01:13:16.5000.11330.041.6139.5
IMOLIV2025-12-05 01:13:16.2900.03811.020.102025-12-05 01:13:27.5020.22361.860.2462.5
CSNTIV2025-12-05 01:13:15.7600.0331-0.131.522025-12-05 01:13:25.1700.04000.081.5369.5
OSSCIV2025-12-05 01:13:15.7040.0200-0.350.922025-12-05 01:13:25.4810.04000.081.5269.6
MTRZIV2025-12-05 01:13:17.7100.03611.790.262025-12-05 01:13:28.6740.04001.920.2470.6
POPMGU2025-12-05 01:13:21.3100.05120.410.942025-12-05 01:13:35.2540.80990.450.73102.0
PIIIV2025-12-05 01:13:24.0800.05820.231.342025-12-05 01:13:38.4650.3527-0.750.54118.6
MAIMGU2025-12-05 01:13:24.3100.06020.171.432025-12-05 01:13:38.8600.4909-0.900.45120.8
CARDGU2025-12-05 01:13:24.1780.0200-0.161.422025-12-05 01:13:40.1490.04000.061.28123.1
GSCLGU2025-12-05 01:13:26.1220.0200-0.081.492025-12-05 01:13:43.1330.0400-0.630.62126.4
SARMGU2025-12-05 01:13:24.4980.0200-1.550.002025-12-05 01:13:43.4280.04000.470.89133.4


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.		 Dist. (km) Azimuth
OSSC IVHH1.992.21e-169.6241
MTRZ IVHH1.941.93e-170.6320
POPM GUHH1.921.62e-1102.0284
PII IVHH2.077.64e-2118.6265
MAIM GUHH1.864.10e-2120.8275
CARD GUHH1.904.79e-2123.1281
GSCL GUHH2.056.22e-2126.4298
SARM GUEH1.854.17e-2133.4288


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.
(°)
OSSC IVHHZ8.4993e-62.1112e-61.3787e-66.2494e-72.8427e-72.4326e-57.1878e-63.3235e-74.3799e-869.6241
OSSC IVHHN7.9018e-62.4562e-61.8516e-61.0071e-64.1129e-72.1656e-57.5349e-65.7991e-76.1673e-869.6241
OSSC IVHHE8.5163e-62.4021e-61.9020e-67.9519e-73.1208e-73.2321e-51.1784e-54.1684e-76.4121e-869.6241
MTRZ IVHHZ1.7170e-65.4450e-76.0099e-74.3968e-72.0730e-74.9452e-63.5695e-62.1095e-71.9470e-870.6320
MTRZ IVHHN4.2140e-61.5494e-61.4308e-69.8306e-73.5936e-78.6298e-66.4859e-64.3083e-75.6456e-870.6320
MTRZ IVHHE3.8400e-61.3155e-61.3917e-67.9098e-72.9056e-77.4306e-68.1620e-63.7664e-73.4955e-870.6320
POPM GUHHZ2.4323e-66.2143e-75.7539e-71.9661e-71.0401e-78.4136e-62.6049e-61.5478e-71.8178e-8102.0284
POPM GUHHN7.9933e-62.1506e-61.5868e-63.8415e-71.9389e-71.7041e-56.3771e-62.9642e-75.3223e-8102.0284
POPM GUHHE5.3329e-61.3777e-61.2262e-63.4828e-71.5940e-71.1701e-56.4505e-62.3461e-73.6976e-8102.0284
PII IVHHZ1.8299e-64.9559e-74.5765e-71.4136e-75.9628e-85.2742e-63.0271e-68.3466e-81.3690e-8118.6265
PII IVHHN1.4530e-65.8069e-75.9048e-72.3837e-71.0702e-72.4838e-65.8250e-61.4133e-71.7467e-8118.6265
PII IVHHE1.5690e-66.4235e-76.6818e-72.6224e-71.1111e-73.2290e-66.1624e-61.5492e-71.8222e-8118.6265
MAIM GUHHZ1.1117e-62.6375e-72.8854e-71.1405e-76.2241e-82.3119e-62.2453e-68.2237e-89.9641e-9120.8275
MAIM GUHHN1.1992e-63.3240e-73.1961e-72.0743e-79.5378e-83.9531e-61.9441e-61.0921e-71.0702e-8120.8275
MAIM GUHHE9.5884e-73.0104e-72.5957e-71.2848e-75.2404e-83.2225e-61.4373e-66.3391e-89.1893e-9120.8275
CARD GUHHZ1.0158e-62.6980e-72.2558e-71.4512e-75.1979e-83.2814e-61.4679e-66.7826e-87.3565e-9123.1281
CARD GUHHN2.5168e-66.2007e-74.1643e-72.5695e-71.4578e-79.1214e-61.5578e-61.9346e-71.6236e-8123.1281
CARD GUHHE2.0975e-64.9800e-74.6144e-71.5392e-75.1154e-87.4556e-63.5412e-67.2325e-81.2828e-8123.1281
GSCL GUHHZ4.3761e-71.2791e-71.4113e-79.8236e-84.5187e-87.9883e-79.2957e-74.3948e-84.4481e-9126.4298
GSCL GUHHN6.8219e-72.3677e-72.7699e-71.6314e-76.5573e-81.0626e-61.8167e-68.1151e-87.6640e-9126.4298
GSCL GUHHE3.9246e-71.8113e-71.7273e-71.4344e-71.1640e-78.2963e-71.2924e-61.4626e-71.0252e-8126.4298
SARM GUEHZ4.3709e-71.1209e-79.3214e-88.4519e-84.1284e-81.3477e-64.1223e-75.8127e-86.9724e-9133.4288
SARM GUEHN4.9226e-71.0611e-71.0374e-71.0637e-73.3653e-88.7592e-74.9780e-74.5967e-84.1891e-9133.4288
SARM GUEHE4.6343e-71.2430e-71.1088e-71.2634e-76.0641e-81.0806e-66.6314e-75.2013e-87.3967e-9133.4288
*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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