MANUAL Location - Area: Alpi Cozie , magnitude (ML): 0.3
2025-04-03 19:15:42 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-04-04 07:13:32

20 km
Lat : Lon
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Earthquake info - Manual location
Event - ID :250403191518
Magnitude (ML) :0.3 +/- 0.2
Origin Time :2025-04-03 19:15:42.57 (UTC)
Location : Latitude: 44.538 N, Longitude: 6.728 E
Area :Alpi Cozie
Depth (km) :7.88
Distances (km) : 21.8 --- Acceglio
22.8 --- Argentera
23.4 --- Bellino
25.6 --- Pontechianale
26.6 --- Prazzo
27.7 --- Casteldelfino
28.6 --- Elva
29.5 --- Canosio
30.3 --- Marmora
31.8 --- Stroppo
32.3 --- Pietraporzio
35.2 --- Sambuco
35.9 --- Macra
36.3 --- Celle di Macra
36.9 --- Sampeyre
38.5 --- Crissolo
39.7 --- Oncino
40.4 --- Ostana
40.9 --- Castelmagno
42.1 --- San Damiano Macra

Quality location estimate: Erh: 1 km, Erz: 1 km, Nf: 26, Gap: 185 °, 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.
SURFFR2025-04-03 19:15:45.4400.00800.012.032025-04-03 19:15:47.5500.0491-0.011.9512.1
PZZGU2025-04-03 19:15:48.9500.0180-0.011.972025-04-03 19:15:53.3090.1855-0.250.9932.3
OGAGFR2025-04-03 19:15:47.9200.0150-1.090.322025-04-03 19:15:51.7200.0902-1.840.1132.8
RRLGU2025-04-03 19:15:50.5610.0200-0.510.502025-04-03 19:15:56.1500.1283-0.940.4144.0
ISOFR2025-04-03 19:15:51.4200.0261-0.061.672025-04-03 19:15:57.0900.2617-0.440.7747.7
BHBGU2025-04-03 19:15:52.8270.02000.190.932025-04-03 19:15:59.6820.0400-0.031.4254.3
STVGU2025-04-03 19:15:53.1000.03610.051.662025-04-03 19:16:00.2000.1865-0.051.1858.2
ENRGU2025-04-03 19:15:54.3200.03510.071.552025-04-03 19:16:02.3800.04000.081.2565.3
OGMOFR2025-04-03 19:15:56.2700.0200-0.021.592025-04-03 19:16:04.1500.3237-1.880.1475.0
RSPGU2025-04-03 19:15:57.0180.0200-0.081.442025-04-03 19:16:05.8010.0400-1.500.1980.5
TURFFR2025-04-03 19:15:57.5780.02000.111.312025-04-03 19:16:07.3600.0400-0.540.6382.2
MLIGIV2025-04-03 19:15:59.6820.0200-0.550.552025-04-03 19:16:11.3320.0400-1.160.3497.8
MGROGU2025-04-03 19:16:00.0300.0532-0.830.442025-04-03 19:16:12.9800.3197-0.660.64102.5


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
PZZ GUHH0.112.35e-232.396
OGAG FRHH0.201.65e-232.8332
RRL GUHH0.307.93e-344.07
ISO FRHH0.075.92e-347.7147
BHB GUHH0.276.59e-354.352
STV GUHH0.243.92e-358.2124
ENR GUHH0.752.02e-265.3122
RSP GUHH-0.001.77e-380.532
TURF FRHH0.313.18e-382.2140
MGRO GUHH0.553.32e-3102.5122


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 GUHHZ1.9685e-62.9544e-71.5298e-73.9510e-82.1843e-87.0067e-66.8939e-73.5061e-86.6793e-932.396
PZZ GUHHN3.3942e-63.8103e-71.7299e-74.8804e-82.5385e-85.2938e-65.8907e-74.6224e-88.4006e-932.396
PZZ GUHHE3.0876e-64.4603e-72.2409e-75.5311e-83.7604e-85.9111e-61.0188e-65.5300e-81.1716e-832.396
OGAG FRHHZ1.4664e-61.6538e-71.1850e-75.0506e-82.3969e-81.4277e-67.6958e-73.3338e-84.5854e-932.8332
OGAG FRHHN1.0559e-61.4353e-71.0957e-74.0515e-81.8715e-81.3484e-66.3653e-73.1292e-83.3272e-932.8332
OGAG FRHHE1.4594e-61.9358e-71.1842e-74.3950e-82.3663e-81.3380e-68.9033e-73.9933e-86.1171e-932.8332
RRL GUHHZ7.1306e-78.0566e-84.1363e-81.6184e-88.5641e-91.6454e-62.2486e-71.1624e-81.9325e-944.07
RRL GUHHN7.2805e-71.1381e-76.3323e-82.1824e-81.1218e-82.1894e-62.6439e-71.6954e-82.5318e-944.07
RRL GUHHE8.5574e-71.1436e-77.8568e-83.0330e-81.2441e-82.4305e-64.1922e-72.0083e-83.0903e-944.07
ISO FRHHZ1.5586e-61.7986e-73.9739e-81.6539e-88.8918e-92.5813e-61.3615e-71.6967e-83.7837e-947.7147
ISO FRHHN1.1635e-61.0965e-73.5534e-81.0087e-85.8920e-92.1514e-61.4438e-79.7742e-92.3119e-947.7147
ISO FRHHE2.0306e-61.6376e-73.8604e-81.2637e-86.9363e-91.4689e-61.6242e-71.2793e-83.4622e-947.7147
BHB GUHHZ1.1294e-61.9504e-77.7274e-82.8251e-89.6606e-92.4421e-63.2516e-71.7929e-84.3143e-954.352
BHB GUHHN1.2196e-61.7628e-76.5178e-82.0628e-89.6284e-91.9175e-63.4679e-71.4856e-83.5901e-954.352
BHB GUHHE1.2358e-61.5140e-76.2808e-83.2927e-81.1660e-81.7463e-62.1667e-71.5664e-82.6791e-954.352
STV GUHHZ3.7668e-63.6854e-74.2407e-81.3380e-88.4213e-91.3644e-61.8501e-71.1079e-82.0674e-958.2124
STV GUHHN1.0364e-61.1710e-73.7645e-81.1786e-86.7776e-91.5520e-61.7567e-71.0857e-82.1472e-958.2124
STV GUHHE8.8123e-79.4702e-83.8493e-81.1614e-86.4797e-91.5763e-61.4611e-79.8339e-91.8983e-958.2124
ENR GUHHZ4.0362e-64.7533e-77.6189e-82.4325e-81.2837e-83.8216e-62.7170e-72.8087e-87.3395e-965.3122
ENR GUHHN8.9766e-67.8761e-71.0874e-73.3540e-82.0494e-86.4696e-64.0141e-74.6455e-81.4449e-865.3122
ENR GUHHE8.9981e-67.8780e-71.0810e-73.5186e-81.8945e-85.5129e-64.0818e-74.8199e-81.4610e-865.3122
RSP GUHHZ1.4018e-71.5315e-88.2059e-94.2623e-92.0660e-93.0425e-73.8165e-82.6120e-93.8932e-1080.532
RSP GUHHN1.6106e-72.4380e-81.4654e-84.8108e-92.5883e-95.6161e-76.5646e-83.2934e-95.2779e-1080.532
RSP GUHHE1.8626e-72.9497e-81.6718e-87.8004e-95.5455e-94.5923e-76.0484e-88.9111e-91.1142e-980.532
TURF FRHHZ5.6785e-76.1115e-82.0826e-89.8416e-97.1183e-96.7751e-71.0401e-71.3147e-81.3605e-982.2140
TURF FRHHN3.9807e-74.4736e-82.5178e-88.9133e-98.1590e-97.6176e-71.1269e-71.2628e-81.5879e-982.2140
TURF FRHHE2.6720e-74.7047e-82.7599e-81.1582e-89.0701e-98.6427e-71.5651e-71.2985e-81.6293e-982.2140
MGRO GUHHZ2.3497e-73.5920e-81.5398e-88.7764e-95.5538e-94.9308e-78.5358e-88.8748e-98.4583e-10102.5122
MGRO GUHHN3.0233e-74.3498e-81.5582e-81.0749e-88.8734e-95.7286e-76.5673e-81.6026e-81.5860e-9102.5122
MGRO GUHHE2.0632e-73.2363e-81.9003e-81.7345e-82.1533e-86.5194e-71.2906e-73.5375e-85.9116e-9102.5122
*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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