MANUAL Location - Area: Alpi Cozie , magnitude (ML): 0.9
2025-02-20 01:31:58 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-02-20 09:59:05

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Earthquake info - Manual location
Event - ID :250220013133
Magnitude (ML) :0.9 +/- 0.2
Origin Time :2025-02-20 01:31:58.38 (UTC)
Location : Latitude: 44.518 N, Longitude: 6.858 E
Area :Alpi Cozie
Depth (km) :3.20
Distances (km) : 11.4 --- Acceglio
14.4 --- Bellino
14.9 --- Argentera
16.0 --- Prazzo
17.8 --- Pontechianale
18.5 --- Elva
18.6 --- Casteldelfino
19.0 --- Canosio
19.8 --- Marmora
21.3 --- Stroppo
23.7 --- Pietraporzio
25.4 --- Macra
25.7 --- Celle di Macra
26.3 --- Sambuco
27.1 --- Sampeyre
30.5 --- Castelmagno
31.1 --- Crissolo
31.6 --- San Damiano Macra
31.7 --- Oncino
32.6 --- Ostana

Quality location estimate: Erh: 1 km, Erz: 0.8 km, Nf: 42, Gap: 92 °, Rms: 0.24


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.
SURFFR2025-02-20 01:32:00.1400.0030-0.021.552025-02-20 01:32:00.7970.1002-0.710.186.4
PZZGU2025-02-20 01:32:03.1450.01000.261.192025-02-20 01:32:06.1800.05810.001.5221.0
VINDIV2025-02-20 01:32:05.2550.02000.001.572025-02-20 01:32:10.0620.0400-0.061.3534.4
OGAGFR2025-02-20 01:32:06.2000.02000.111.502025-02-20 01:32:11.2520.0400-0.280.7239.4
ISOFR2025-02-20 01:32:06.7400.02610.510.652025-02-20 01:32:11.2600.1233-0.390.5740.4
RRLGU2025-02-20 01:32:07.1900.0221-0.061.372025-02-20 01:32:13.6300.13340.181.3145.4
BHBGU2025-02-20 01:32:07.5300.02310.051.552025-02-20 01:32:13.5200.1374-0.350.6747.7
STVGU2025-02-20 01:32:07.5550.02000.181.392025-02-20 01:32:13.9400.14340.291.1648.1
ENRGU2025-02-20 01:32:08.8900.02810.341.052025-02-20 01:32:15.4600.4259-0.190.8455.0
OGDIFR2025-02-20 01:32:12.1480.02000.850.192025-02-20 01:32:20.6170.0400-0.081.1868.0
MVIFFR2025-02-20 01:32:12.6500.06630.440.862025-02-20 01:32:21.6670.6129-0.510.5473.0
TURFFR2025-02-20 01:32:12.7930.02000.650.432025-02-20 01:32:22.0000.22260.121.1373.9
RSPGU2025-02-20 01:32:12.5770.02000.061.472025-02-20 01:32:22.5280.04000.011.2577.1
OGMOFR2025-02-20 01:32:13.1990.02000.341.082025-02-20 01:32:23.4700.23160.320.9977.9
SAOFFR2025-02-20 01:32:14.6590.02001.330.022025-02-20 01:32:23.5700.0400-0.230.9181.1
GBOSGU2025-02-20 01:32:13.7200.04220.371.022025-02-20 01:32:23.9590.13030.221.1583.9
ESCAFR2025-02-20 01:32:14.8250.02000.380.992025-02-20 01:32:25.7900.29670.011.0086.8
MLIGIV2025-02-20 01:32:14.6580.02000.011.402025-02-20 01:32:25.6610.0400-0.390.6588.3
MGROGU2025-02-20 01:32:15.3900.04720.181.352025-02-20 01:32:26.8990.0400-0.180.9892.4
BIGNGU2025-02-20 01:32:17.2330.02000.850.242025-02-20 01:32:28.7830.3407-0.100.90100.5
IMIGU2025-02-20 01:32:17.3580.02000.121.372025-02-20 01:32:30.2850.4739-0.190.75106.6


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
PZZ GUHH0.792.57e-121.093
OGAG FRHH0.633.17e-239.4320
ISO FRHH0.723.67e-240.4158
RRL GUHH0.691.85e-245.4353
BHB GUHH0.893.52e-247.742
STV GUHH0.963.07e-248.1129
ENR GUHH1.228.62e-255.0126
TURF FRHH1.072.34e-273.9145
RSP GUHH0.465.58e-377.124
SAOF FRHH1.021.71e-281.1137
ESCA FRHH1.101.76e-286.8152
MGRO GUHH1.031.28e-292.4125
BIGN GUEH1.161.42e-2100.5135
IMI GUHH1.262.10e-2106.6129


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 GUHHZ2.9797e-53.7744e-61.5899e-64.3022e-72.5579e-78.8031e-54.7515e-64.5722e-79.1806e-821.093
PZZ GUHHN2.3665e-53.9439e-62.0432e-67.5034e-73.7004e-71.0471e-41.0531e-55.5497e-78.9751e-821.093
PZZ GUHHE1.6187e-53.7799e-62.5729e-66.5723e-73.1609e-75.2628e-51.5253e-54.8647e-78.5420e-821.093
OGAG FRHHZ7.8978e-71.9904e-71.8336e-78.7836e-84.2854e-81.6726e-68.1821e-75.0544e-86.0778e-939.4320
OGAG FRHHN8.3691e-71.8472e-71.5124e-76.2931e-83.4114e-82.3164e-66.9679e-74.6157e-85.8314e-939.4320
OGAG FRHHE9.3339e-73.1727e-72.1298e-71.8040e-71.2141e-71.9898e-61.0708e-62.0653e-71.5935e-839.4320
ISO FRHHZ3.2335e-66.0781e-73.7084e-79.6864e-84.5845e-81.2150e-51.3780e-66.2610e-81.1991e-840.4158
ISO FRHHN2.5250e-63.6153e-72.0957e-75.1431e-82.8499e-84.4749e-61.0184e-64.2885e-87.3096e-940.4158
ISO FRHHE3.4508e-65.0432e-73.3414e-79.2509e-84.7982e-86.4725e-62.0214e-67.3937e-81.3630e-840.4158
RRL GUHHZ1.2887e-61.9755e-71.0534e-75.8259e-82.5475e-82.2698e-66.9411e-72.8567e-84.1973e-945.4353
RRL GUHHN1.9996e-63.1885e-71.8566e-75.8006e-82.9111e-86.7546e-66.3858e-74.1852e-86.2505e-945.4353
RRL GUHHE1.7277e-62.8375e-71.8421e-78.4883e-83.1795e-86.1958e-69.8163e-74.7565e-87.7040e-945.4353
BHB GUHHZ3.3632e-64.4223e-72.5459e-76.9718e-83.7304e-81.1634e-51.1919e-65.2233e-81.0164e-847.742
BHB GUHHN2.2484e-64.2884e-72.7353e-79.7894e-84.7069e-85.6722e-61.5362e-66.6935e-81.0376e-847.742
BHB GUHHE2.2948e-63.2539e-71.9247e-77.8468e-83.7432e-84.8883e-68.8373e-75.8934e-87.5222e-947.742
STV GUHHZ2.6515e-64.3683e-72.8494e-71.2469e-76.3319e-85.5481e-62.1405e-68.5127e-89.8185e-948.1129
STV GUHHN3.6946e-64.9298e-72.6349e-79.4128e-84.4222e-87.3663e-61.5931e-66.0388e-81.0611e-848.1129
STV GUHHE3.2812e-65.3233e-72.7963e-78.2334e-84.6743e-89.5359e-61.3203e-68.2024e-81.0576e-848.1129
ENR GUHHZ9.0194e-61.0837e-64.1847e-71.3781e-77.7734e-81.3069e-51.9439e-61.0885e-72.1211e-855.0126
ENR GUHHN3.3143e-53.0396e-66.5554e-72.5556e-71.0563e-72.6949e-54.0258e-61.8794e-75.9388e-855.0126
ENR GUHHE2.6285e-52.3101e-66.3119e-72.0536e-79.7898e-82.0361e-52.6423e-61.9262e-74.8120e-855.0126
TURF FRHHZ6.5091e-71.9207e-71.3602e-76.7307e-83.4979e-82.0706e-68.7428e-74.5549e-84.9329e-973.9145
TURF FRHHN1.3176e-62.4110e-71.6714e-75.6081e-83.5514e-84.2415e-66.4239e-73.7124e-85.3155e-973.9145
TURF FRHHE7.8327e-72.0671e-71.6899e-79.0312e-83.2516e-83.7588e-61.0964e-64.5875e-86.8359e-973.9145
RSP GUHHZ4.9848e-77.1883e-84.2116e-81.2727e-86.0124e-91.2993e-61.7314e-79.2225e-91.7550e-977.124
RSP GUHHN5.4952e-71.1280e-75.5005e-81.7023e-87.1612e-91.8731e-62.0030e-71.0294e-82.3300e-977.124
RSP GUHHE6.5792e-71.0023e-75.4479e-81.8366e-88.5454e-92.4169e-61.9922e-71.3361e-82.4754e-977.124
SAOF FRHHZ5.2380e-71.2772e-71.4759e-76.7534e-83.0826e-81.1389e-61.1076e-64.7143e-84.9693e-981.1137
SAOF FRHHN5.0073e-71.2576e-71.0503e-75.6962e-82.9291e-81.4334e-65.0643e-73.9406e-83.7343e-981.1137
SAOF FRHHE6.3592e-71.7025e-71.4091e-76.4487e-82.8058e-81.9061e-66.8854e-73.6135e-84.6723e-981.1137
GBOS GUHHZ1.2952e-63.7590e-72.7661e-71.2317e-75.0448e-83.5704e-61.7563e-66.9096e-81.0424e-883.9111
GBOS GUHHN8.9035e-72.3900e-71.7873e-77.3671e-82.8175e-82.1612e-66.9359e-74.2638e-86.7402e-983.9111
GBOS GUHHE1.2849e-63.0136e-73.2784e-71.4983e-75.8352e-84.4349e-61.8479e-68.4228e-81.0540e-883.9111
ESCA FRHHZ7.2452e-71.3335e-71.1301e-73.4804e-82.0767e-81.7913e-67.2654e-73.1394e-83.4404e-986.8152
ESCA FRHHN9.9414e-71.5167e-71.1104e-74.6899e-82.5246e-82.5626e-64.2519e-73.1764e-84.6759e-986.8152
ESCA FRHHE1.1667e-62.0470e-71.5990e-74.8957e-82.9963e-84.3828e-61.1764e-64.0264e-85.9388e-986.8152
MGRO GUHHZ4.4285e-79.0405e-88.3965e-87.8378e-85.4909e-81.0143e-64.3757e-79.6369e-81.1970e-892.4125
MGRO GUHHN5.2492e-71.0163e-78.2841e-84.6896e-83.2095e-81.4350e-65.4858e-74.0751e-84.5031e-992.4125
MGRO GUHHE6.5415e-71.3330e-71.0087e-74.4249e-82.6580e-82.1566e-65.5865e-72.8320e-84.0777e-992.4125
BIGN GUEHZ6.8927e-71.0961e-77.0329e-84.0228e-82.8522e-81.5903e-62.8546e-74.1541e-84.8260e-9100.5135
BIGN GUEHN1.6356e-62.4744e-71.3446e-75.0056e-82.9955e-83.2423e-64.5268e-73.7594e-86.5568e-9100.5135
BIGN GUEHE1.2830e-62.0519e-71.2792e-74.4222e-82.9150e-82.6932e-66.0109e-73.1701e-85.0337e-9100.5135
IMI GUHHZ4.9478e-71.1475e-78.2632e-84.4478e-82.7529e-82.1468e-65.1943e-73.3038e-83.0883e-9106.6129
IMI GUHHN1.4364e-62.8404e-72.0600e-76.9369e-83.7453e-84.4317e-61.0527e-64.6845e-87.8394e-9106.6129
IMI GUHHE9.9941e-71.7800e-71.4005e-75.0664e-83.2011e-83.5674e-68.7255e-74.3844e-86.1970e-9106.6129
*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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