MANUAL Location - Area: Alpi Graie , magnitude (ML): 0.2
2025-04-03 07:30:42 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-04-03 07:47:42

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Earthquake info - Manual location
Event - ID :250403072944
Magnitude (ML) :0.2 +/- 0.2
Origin Time :2025-04-03 07:30:42.368 (UTC)
Location : Latitude: 45.771 N, Longitude: 7.206 E
Area :Alpi Graie
Depth (km) :8.45
Distances (km) : 5.9 --- Etroubles
6.1 --- Saint-Oyen
6.2 --- Saint-Rhemy-En-Bosses
6.6 --- Allein
6.6 --- Saint-Nicolas
6.9 --- Saint-Pierre
7.1 --- Sarre
7.2 --- Gignod
7.5 --- Villeneuve
8.0 --- Arvier
8.1 --- Jovencan
8.1 --- Aymavilles
8.4 --- Avise
8.4 --- Gressan
8.5 --- Roisan
8.9 --- Introd
9.1 --- Aosta
9.6 --- Doues
10.7 --- Charvensod
10.7 --- La Salle

Quality location estimate: Erh: 1.6 km, Erz: 1.2 km, Nf: 8, Gap: 165 °, Rms: 0.01


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.
REMYGU2025-04-03 07:30:45.4160.0110-0.001.822025-04-03 07:30:47.5040.05710.011.5813.8
MRGEIV2025-04-03 07:30:45.5010.01200.011.802025-04-03 07:30:47.5800.0400-0.021.6715.1
DIXCH2025-04-03 07:30:49.3200.0200-0.740.002025-04-03 07:30:53.8200.1113-1.670.0039.2
OROIV2025-04-03 07:30:53.8200.0763-0.011.122025-04-03 07:30:58.4840.0400-3.300.0063.0


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
REMY GUHH-0.024.93e-213.8333
MRGE IVHH0.399.18e-215.1270


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.
(°)
REMY GUHHZ3.5754e-63.5460e-71.8685e-75.6679e-82.6925e-84.4412e-66.7071e-74.2355e-88.4063e-913.8333
REMY GUHHN2.9558e-65.5207e-72.6078e-71.1946e-75.1646e-87.3537e-61.4331e-66.8101e-81.2023e-813.8333
REMY GUHHE4.7252e-65.2561e-73.5494e-71.1928e-76.7484e-81.0490e-51.5892e-61.0460e-71.6119e-813.8333
MRGE IVHHZ8.2187e-68.8438e-72.1914e-77.8102e-84.5103e-87.9952e-61.1248e-68.5884e-82.0263e-815.1270
MRGE IVHHN3.3017e-53.2791e-65.4350e-71.8662e-71.0239e-73.7421e-51.9980e-62.4672e-75.9924e-815.1270
MRGE IVHHE3.0153e-52.9089e-65.4135e-71.7537e-79.7420e-82.0565e-52.5802e-61.7856e-75.4290e-815.1270
DIX CHHHZ4.4395e-65.0559e-72.8303e-71.0199e-74.2004e-81.0275e-51.3716e-66.4018e-81.4521e-839.224
DIX CHHHN5.0601e-66.7872e-73.3196e-79.8494e-84.5739e-81.4208e-51.4767e-66.6479e-81.5382e-839.224
DIX CHHHE5.3570e-66.7421e-72.7230e-71.0339e-74.6988e-88.4089e-61.2431e-66.8633e-81.6784e-839.224
ORO IVEHZ1.0757e-51.3500e-62.6769e-77.5461e-85.1615e-81.5030e-58.8790e-71.0790e-72.6968e-863.0105
ORO IVEHN8.2374e-69.6521e-73.2306e-76.6316e-84.0714e-82.2849e-51.2909e-67.8459e-81.9381e-863.0105
ORO IVEHE8.5724e-61.0683e-62.4914e-78.5200e-84.6980e-81.1889e-51.1146e-69.2000e-82.3027e-863.0105
*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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