MANUAL Location - Area: Alpi Cozie , magnitude (ML): 0.9
2025-12-08 02:34:33 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-12-09 08:49:23

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Earthquake info - Manual location
Event - ID :251208023407
Magnitude (ML) :0.9 +/- 0.2
Origin Time :2025-12-08 02:34:33.375 (UTC)
Location : Latitude: 44.598 N, Longitude: 6.971 E
Area :Alpi Cozie
Depth (km) :6.48
Distances (km) : 4.0 --- Bellino
5.3 --- Pontechianale
7.8 --- Casteldelfino
11.3 --- Elva
13.6 --- Acceglio
14.2 --- Prazzo
15.9 --- Stroppo
17.4 --- Sampeyre
17.9 --- Canosio
18.2 --- Marmora
18.6 --- Crissolo
19.4 --- Oncino
19.6 --- Macra
20.2 --- Ostana
20.8 --- Celle di Macra
22.4 --- Argentera
24.1 --- Frassino
25.5 --- San Damiano Macra
26.0 --- Paesana
26.2 --- Bobbio Pellice

Quality location estimate: Erh: 0.9 km, Erz: 1.6 km, Nf: 44, Gap: 77 °, 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.
PZZGU2025-12-08 02:34:37.2400.00900.261.302025-12-08 02:34:39.5600.0511-0.031.5317.2
SURFFR2025-12-08 02:34:37.6400.01000.221.432025-12-08 02:34:40.3690.0581-0.041.4919.2
BHBGU2025-12-08 02:34:40.3700.01800.221.422025-12-08 02:34:44.5600.1073-0.320.9035.8
VINDIV2025-12-08 02:34:40.3310.0200-0.001.592025-12-08 02:34:44.7500.0400-0.520.6636.4
RRLGU2025-12-08 02:34:41.0400.02000.031.592025-12-08 02:34:46.2170.1564-0.191.1439.6
OGAGFR2025-12-08 02:34:41.1200.0201-0.011.572025-12-08 02:34:46.4400.1213-0.231.0840.9
ISOFR2025-12-08 02:34:42.6800.02410.650.242025-12-08 02:34:48.1400.14140.141.3547.0
STVGU2025-12-08 02:34:42.4000.02510.261.252025-12-08 02:34:48.1100.1474-0.171.1748.8
ENRGU2025-12-08 02:34:43.3100.02810.261.242025-12-08 02:34:49.6900.1655-0.141.2054.7
RSPGU2025-12-08 02:34:45.3900.03310.111.532025-12-08 02:34:52.7400.3567-0.920.4065.9
OGMOFR2025-12-08 02:34:46.5200.02000.021.522025-12-08 02:34:55.9400.21560.151.1571.8
TURFFR2025-12-08 02:34:47.8490.02000.490.502025-12-08 02:34:57.0210.2637-0.241.0277.1
MVIFFR2025-12-08 02:34:48.1570.02000.251.252025-12-08 02:34:57.9230.1002-0.430.8379.5
GBOSGU2025-12-08 02:34:47.2000.0402-0.011.472025-12-08 02:34:56.1990.2406-0.600.6579.8
SAOFFR2025-12-08 02:34:48.3620.02000.181.402025-12-08 02:34:58.2700.4209-0.320.8782.5
MLIGIV2025-12-08 02:34:48.7450.0200-0.480.722025-12-08 02:34:58.9930.0400-1.420.1188.5
MGROGU2025-12-08 02:34:48.9720.0200-0.480.712025-12-08 02:34:59.6580.0400-1.190.1991.1
ESCAFR2025-12-08 02:34:50.6410.02000.830.142025-12-08 02:35:01.0920.1002-0.300.9991.3
LSDGU2025-12-08 02:34:50.9590.02000.560.432025-12-08 02:35:02.2460.7249-0.050.7297.0
ROROGU2025-12-08 02:34:51.0490.02000.081.442025-12-08 02:35:02.9800.0400-0.271.02102.6
IMIGU2025-12-08 02:34:51.7500.05420.101.412025-12-08 02:35:03.9700.3197-0.640.64106.2


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
PZZ GUHH0.763.40e-117.2131
BHB GUHH0.613.32e-235.841
RRL GUHH0.833.32e-239.6338
OGAG FRHH0.653.07e-240.9302
ISO FRHH0.351.17e-247.0172
STV GUHH0.912.67e-248.8144
RSP GUHH0.811.76e-265.921
TURF FRHH0.921.52e-277.1154
GBOS GUHH1.422.27e-279.8120
SAOF FRHH0.861.12e-282.5145
MGRO GUHH0.971.16e-291.1133
ESCA FRHH0.921.04e-291.3159
LSD GUHH1.041.17e-297.08
RORO GUHH1.039.98e-3102.6121
IMI GUHH1.242.03e-2106.2136


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.
(°)
PZZ GUHHZ4.2949e-54.6126e-61.9846e-68.0195e-74.5006e-76.9585e-58.6852e-67.3107e-71.1307e-717.2131
PZZ GUHHN5.9160e-56.7258e-62.3385e-67.5376e-74.6724e-79.5399e-51.0650e-58.3751e-71.7522e-717.2131
PZZ GUHHE5.2249e-55.9239e-62.1410e-68.1211e-74.7577e-77.4351e-51.2077e-57.3860e-71.2667e-717.2131
BHB GUHHZ6.4966e-66.8053e-73.0890e-78.0561e-84.4646e-81.1836e-51.0983e-67.5067e-81.6821e-835.841
BHB GUHHN4.7827e-66.5927e-72.7699e-71.0257e-75.5499e-86.8450e-69.9254e-78.3777e-81.2896e-835.841
BHB GUHHE6.6662e-67.9622e-71.9599e-77.7487e-83.8152e-81.0165e-59.0574e-75.9000e-81.4535e-835.841
RRL GUHHZ2.5742e-63.4612e-71.6002e-75.5753e-82.3655e-84.3817e-69.4391e-73.5178e-88.0533e-939.6338
RRL GUHHN3.9480e-67.0368e-73.2798e-78.1301e-84.2148e-81.5439e-52.4475e-67.3387e-81.5397e-839.6338
RRL GUHHE3.7156e-65.5153e-72.8718e-78.0134e-84.9855e-81.1738e-51.0479e-67.4012e-81.3640e-839.6338
OGAG FRHHZ1.0739e-64.2055e-72.5456e-71.7169e-79.3570e-82.5327e-61.5069e-61.3251e-71.0738e-840.9302
OGAG FRHHN1.1587e-62.4713e-71.9881e-71.0520e-74.3229e-82.4720e-68.5438e-76.3335e-86.7957e-940.9302
OGAG FRHHE1.0425e-62.9134e-72.4789e-71.8571e-77.1161e-81.7002e-61.3653e-68.0850e-88.1560e-940.9302
ISO FRHHZ2.0807e-62.3012e-78.3824e-82.7243e-81.4974e-84.0387e-62.9123e-72.4685e-85.1379e-947.0172
ISO FRHHN2.3654e-62.7141e-76.1057e-81.6371e-89.3498e-93.4471e-62.0105e-71.9708e-85.2112e-947.0172
ISO FRHHE2.0492e-62.2815e-78.5056e-82.4347e-81.4365e-84.6441e-62.9234e-72.4166e-84.5628e-947.0172
STV GUHHZ5.6398e-66.1634e-71.8088e-74.3775e-82.6364e-85.8997e-65.5343e-75.4066e-81.1686e-848.8144
STV GUHHN4.8692e-65.5517e-72.0680e-76.1134e-83.4746e-87.8207e-66.9813e-75.3818e-81.2413e-848.8144
STV GUHHE4.3552e-64.9998e-72.1433e-75.9783e-83.1498e-89.9890e-69.1143e-74.7881e-81.0469e-848.8144
ENR GUHHZ1.6040e-51.7301e-64.0035e-71.0473e-75.8031e-82.4036e-51.3524e-61.1679e-73.2737e-854.7139
ENR GUHHN2.9194e-52.9609e-67.2224e-72.0700e-71.2157e-73.3351e-53.9789e-62.0912e-75.7523e-854.7139
ENR GUHHE3.5881e-53.7715e-69.7143e-72.2563e-71.3258e-73.9459e-54.0651e-62.5932e-76.8591e-854.7139
RSP GUHHZ1.5331e-62.2348e-78.6610e-83.0607e-81.6252e-83.9320e-64.1799e-72.7634e-84.3443e-965.921
RSP GUHHN1.9239e-62.8165e-71.6261e-74.3693e-82.2155e-84.4520e-65.8739e-73.0998e-86.4473e-965.921
RSP GUHHE2.2568e-62.8768e-71.2787e-74.5683e-81.8704e-88.5223e-63.8907e-73.2438e-87.7002e-965.921
TURF FRHHZ7.7977e-71.0997e-78.5383e-84.2583e-82.1283e-81.9638e-63.5241e-72.8651e-83.0783e-977.1154
TURF FRHHN1.3620e-62.4751e-71.5695e-74.1899e-82.0481e-84.1902e-66.3464e-73.0222e-85.5989e-977.1154
TURF FRHHE8.4111e-71.2405e-71.0336e-74.2191e-81.6429e-83.2279e-66.1061e-72.4629e-83.5032e-977.1154
GBOS GUHHZ1.3012e-62.1017e-71.0971e-72.7138e-81.6943e-85.5858e-64.3547e-72.7639e-85.2296e-979.8120
GBOS GUHHN1.1848e-62.4573e-71.4734e-78.9606e-84.9430e-82.8005e-66.4275e-77.8658e-88.3371e-979.8120
GBOS GUHHE1.2777e-61.8023e-71.1876e-72.9583e-81.4329e-83.4909e-65.0645e-72.2260e-83.8554e-979.8120
SAOF FRHHZ5.9217e-71.0048e-79.2777e-83.6171e-81.8030e-88.4772e-76.9451e-72.4689e-82.9560e-982.5145
SAOF FRHHN4.2101e-77.4459e-85.4291e-82.4060e-81.3717e-81.7543e-62.5679e-71.7899e-82.1690e-982.5145
SAOF FRHHE5.2916e-71.1327e-71.0256e-73.3955e-81.8148e-81.0156e-66.9148e-73.0041e-82.9098e-982.5145
MGRO GUHHZ4.8758e-75.6076e-84.9261e-82.3228e-81.5145e-88.0629e-73.0445e-73.1575e-82.0618e-991.1133
MGRO GUHHN6.0724e-71.1155e-78.1933e-85.8227e-82.1132e-81.4359e-62.9889e-73.4049e-83.0714e-991.1133
MGRO GUHHE5.7197e-71.1425e-79.3773e-83.9454e-82.0019e-81.1840e-64.4203e-72.5485e-83.5087e-991.1133
ESCA FRHHZ8.1081e-71.1120e-75.9417e-81.7239e-81.0292e-81.2027e-63.2922e-71.8039e-82.3162e-991.3159
ESCA FRHHN1.4974e-62.0021e-78.2047e-82.4649e-81.4147e-83.1449e-63.4945e-72.2379e-85.0133e-991.3159
ESCA FRHHE8.7891e-71.6000e-71.0100e-73.3990e-82.0693e-83.2858e-66.8065e-73.1433e-83.7886e-991.3159
LSD GUHHZ6.9250e-79.1644e-86.4601e-82.2442e-81.3038e-81.2480e-64.1922e-71.6867e-81.9865e-997.08
LSD GUHHN9.7006e-71.4552e-78.2865e-82.1848e-81.0650e-81.6501e-65.3365e-71.6009e-83.9896e-997.08
LSD GUHHE1.3300e-62.0295e-71.1845e-73.6345e-81.7443e-82.3157e-65.5971e-72.6508e-84.5613e-997.08
RORO GUHHZ7.1482e-71.1326e-76.9553e-82.1247e-81.2326e-83.1249e-62.7634e-71.7841e-82.8393e-9102.6121
RORO GUHHN8.0736e-71.4550e-71.0391e-72.6088e-81.5018e-82.4548e-64.7284e-72.6794e-83.7772e-9102.6121
RORO GUHHE1.0255e-61.2576e-76.7101e-81.4646e-89.3184e-92.6456e-62.8678e-71.5795e-82.6347e-9102.6121
IMI GUHHZ6.9387e-79.5344e-86.7134e-82.3633e-81.9038e-82.1468e-63.1315e-73.0204e-82.8732e-9106.2136
IMI GUHHN2.1641e-63.3461e-71.6890e-74.9205e-83.2547e-84.9158e-69.2871e-76.5932e-86.7302e-9106.2136
IMI GUHHE8.3107e-71.6446e-71.0334e-73.5636e-82.1513e-81.9098e-65.5049e-73.1155e-85.0472e-9106.2136
*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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