MANUAL Location - Area: Alpi Cozie , magnitude (ML): 0.8
2025-04-25 22:42:00 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-04-28 07:11:06

20 km
Lat : Lon
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Earthquake info - Manual location
Event - ID :250425224136
Magnitude (ML) :0.8 +/- 0.2
Origin Time :2025-04-25 22:42:00.939 (UTC)
Location : Latitude: 44.491 N, Longitude: 6.890 E
Area :Alpi Cozie
Depth (km) :2.68
Distances (km) : 8.1 --- Acceglio
11.0 --- Argentera
13.1 --- Prazzo
14.3 --- Bellino
15.7 --- Canosio
16.5 --- Marmora
16.8 --- Elva
18.1 --- Casteldelfino
18.3 --- Pontechianale
18.8 --- Stroppo
19.8 --- Pietraporzio
22.3 --- Sambuco
22.9 --- Macra
23.0 --- Celle di Macra
25.7 --- Sampeyre
27.0 --- Castelmagno
28.9 --- San Damiano Macra
30.2 --- Vinadio
31.5 --- Crissolo
31.5 --- Cartignano

Quality location estimate: Erh: 1.4 km, Erz: 1.3 km, Nf: 32, Gap: 97 °, 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.
SURFFR2025-04-25 22:42:02.8200.0030-0.001.842025-04-25 22:42:03.4880.1173-0.760.416.8
PZZGU2025-04-25 22:42:05.4500.01000.371.172025-04-25 22:42:08.1200.0581-0.011.7018.5
VINDIV2025-04-25 22:42:07.1520.02000.011.802025-04-25 22:42:11.4550.0400-0.071.5230.4
STVGU2025-04-25 22:42:09.3410.02000.041.682025-04-25 22:42:15.3600.13440.251.3144.2
BHBGU2025-04-25 22:42:10.5700.02510.371.152025-04-25 22:42:16.1200.1494-0.590.5348.5
RRLGU2025-04-25 22:42:10.3380.0200-0.111.352025-04-25 22:42:17.2410.21660.131.3348.7
ENRGU2025-04-25 22:42:10.9700.52090.450.902025-04-25 22:42:17.5330.35770.361.0651.2
MVIFFR2025-04-25 22:42:15.2020.02001.050.282025-04-25 22:42:23.5290.2076-0.161.1269.3
TURFFR2025-04-25 22:42:14.8430.02000.780.462025-04-25 22:42:23.3900.21060.031.2769.9
SAOFFR2025-04-25 22:42:16.0040.02000.730.502025-04-25 22:42:25.0430.0400-0.251.0077.1
GBOSGU2025-04-25 22:42:15.7190.02000.321.202025-04-25 22:42:25.7900.24460.391.0680.4
ESCAFR2025-04-25 22:42:16.7470.02000.371.122025-04-25 22:42:26.6650.0400-0.610.5682.9
MLIGIV2025-04-25 22:42:16.7840.02000.191.392025-04-25 22:42:26.7030.0400-0.860.3984.3
MGROGU2025-04-25 22:42:16.9180.0200-0.280.842025-04-25 22:42:27.8010.0400-0.830.4288.5
ROROGU2025-04-25 22:42:17.9580.0200-1.150.162025-04-25 22:42:31.9200.37080.161.06102.6
IMIGU2025-04-25 22:42:20.2320.02001.030.312025-04-25 22:42:32.1600.33570.171.09102.7


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
PZZ GUHH0.622.19e-118.584
STV GUHH0.541.36e-244.2128
BHB GUHH0.461.28e-248.537
RRL GUHH0.561.17e-248.7351
ENR GUHH0.945.24e-251.2124
TURF FRHH0.681.08e-269.9145
SAOF FRHH0.607.18e-377.1136
GBOS GUHH1.301.69e-280.4110
ESCA FRHH0.779.16e-382.9152
MGRO GUHH0.747.39e-388.5124
RORO GUHH1.019.63e-3102.6114
IMI GUHH1.031.37e-2102.7129


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 GUHHZ1.9879e-53.1092e-61.7726e-65.1607e-72.7715e-78.1195e-57.1764e-64.4082e-78.1245e-818.584
PZZ GUHHN2.2682e-54.0360e-62.1102e-66.1252e-73.2242e-71.1983e-47.4607e-65.0428e-78.6319e-818.584
PZZ GUHHE2.1271e-53.4855e-61.6338e-65.8286e-72.4636e-76.3285e-59.1694e-63.8797e-77.3449e-818.584
STV GUHHZ1.6156e-63.0669e-71.8509e-77.2735e-83.1245e-84.1308e-61.2182e-63.9724e-87.4069e-944.2128
STV GUHHN1.9268e-62.7779e-71.3776e-75.5172e-82.6636e-84.3961e-66.8957e-73.7858e-85.3940e-944.2128
STV GUHHE1.6904e-62.5054e-71.3490e-74.6946e-82.0233e-84.2363e-68.4983e-72.5591e-84.9810e-944.2128
BHB GUHHZ1.4331e-62.0015e-71.0869e-72.9323e-82.3582e-85.2101e-64.6945e-75.3215e-84.6441e-948.537
BHB GUHHN1.1015e-61.5477e-71.2034e-73.6436e-82.5469e-83.1704e-64.9570e-74.5665e-84.7610e-948.537
BHB GUHHE1.2737e-62.1633e-79.7425e-83.5143e-82.3302e-83.8247e-63.0232e-74.2080e-85.2704e-948.537
RRL GUHHZ6.3975e-77.0388e-85.4098e-82.0426e-81.0243e-81.3394e-62.9409e-71.4136e-81.6253e-948.7351
RRL GUHHN8.0708e-71.7908e-71.1052e-73.1505e-81.5503e-83.4102e-64.4954e-72.6482e-84.4622e-948.7351
RRL GUHHE6.3727e-71.4466e-71.0071e-73.0059e-81.4980e-82.8812e-66.6072e-71.9832e-83.8476e-948.7351
ENR GUHHZ6.0644e-66.2875e-71.9402e-77.2130e-84.2844e-87.3975e-68.7707e-76.2393e-81.1864e-851.2124
ENR GUHHN1.7384e-51.6839e-63.4888e-71.4044e-77.2238e-81.7646e-51.5300e-61.2833e-73.0802e-851.2124
ENR GUHHE1.5445e-51.5631e-63.4199e-79.7303e-85.5793e-81.9899e-51.6283e-61.1380e-73.0257e-851.2124
TURF FRHHZ5.1169e-71.0012e-77.8604e-82.9454e-81.4157e-81.0831e-63.2870e-72.0674e-82.3893e-969.9145
TURF FRHHN6.0718e-71.2452e-78.9331e-82.5730e-81.7340e-81.6986e-64.3909e-72.8354e-82.7991e-969.9145
TURF FRHHE6.2865e-79.6616e-89.2606e-84.6157e-81.8653e-81.5204e-65.6887e-72.4522e-83.6054e-969.9145
SAOF FRHHZ3.7935e-71.0370e-79.0613e-84.3198e-81.7697e-88.5009e-76.3286e-73.0536e-82.8599e-977.1136
SAOF FRHHN4.8092e-78.8310e-86.6396e-83.4195e-81.8237e-89.0380e-74.8993e-72.1322e-81.9944e-977.1136
SAOF FRHHE3.2408e-78.3170e-87.2175e-82.7158e-81.4627e-81.2130e-65.6053e-71.9900e-82.1752e-977.1136
GBOS GUHHZ1.0351e-61.7134e-71.2955e-73.8258e-81.6684e-83.1828e-67.0186e-72.6032e-84.4538e-980.4110
GBOS GUHHN7.0821e-71.5034e-71.2257e-74.3836e-82.0889e-81.6537e-64.4990e-73.3566e-83.5894e-980.4110
GBOS GUHHE1.0133e-62.2527e-71.6256e-74.4639e-81.8819e-83.9593e-66.1822e-73.1437e-85.8158e-980.4110
ESCA FRHHZ5.1993e-78.0370e-85.9284e-82.1792e-81.3495e-89.4028e-73.2046e-71.5733e-82.3726e-982.9152
ESCA FRHHN8.2299e-71.3010e-77.4724e-82.3207e-81.4211e-81.9586e-64.6810e-72.0989e-82.7862e-982.9152
ESCA FRHHE6.0688e-71.2611e-79.1337e-82.4754e-81.4618e-82.1365e-66.0020e-72.3493e-83.3997e-982.9152
MGRO GUHHZ2.8439e-74.2442e-84.1678e-82.7295e-81.4719e-86.7078e-71.7073e-72.1672e-81.9490e-988.5124
MGRO GUHHN3.8865e-79.4538e-85.0693e-82.9379e-81.7672e-81.5122e-62.6448e-72.6181e-82.1429e-988.5124
MGRO GUHHE3.6113e-77.9810e-85.6846e-82.6979e-81.8924e-81.5103e-63.8792e-72.9191e-82.3297e-988.5124
RORO GUHHZ5.3661e-71.1933e-78.5978e-82.7654e-82.0488e-81.9500e-65.5006e-74.0796e-82.6969e-9102.6114
RORO GUHHN5.6592e-71.0034e-76.6288e-82.1289e-81.4406e-82.0949e-63.3100e-72.3796e-82.3253e-9102.6114
RORO GUHHE5.5900e-71.0152e-77.4931e-83.0268e-83.7033e-81.1983e-63.5076e-76.1581e-86.6002e-9102.6114
IMI GUHHZ3.8591e-77.0400e-85.1337e-83.4213e-83.4237e-81.2431e-62.4681e-74.7004e-83.7012e-9102.7129
IMI GUHHN8.3705e-71.7647e-71.2991e-76.0163e-83.7364e-82.1001e-66.1516e-75.4177e-84.9564e-9102.7129
IMI GUHHE7.2055e-71.0663e-77.0698e-83.9260e-83.1826e-81.2733e-63.9490e-75.0327e-82.6840e-9102.7129
*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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