AUTOMATIC Location - Area: Alpi Graie , magnitude (ML): 0.5
2025-09-07 04:08:44 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-09-07 04:12:41

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Earthquake info - RsniPicker2 automatic location
Event - ID :250907040757
Magnitude (ML) :0.5 +/- 0.3
Origin Time :2025-09-07 04:08:44.83 (UTC)
Location : Latitude: 45.702 N, Longitude: 6.852 E
Area :Alpi Graie
Depth (km) :6.23
Distances (km) : 7.7 --- La Thuile (AO)
12.6 --- Pre -Saint-Didier (AO)
13.9 --- Courmayeur (AO)
15.7 --- Morgex (AO)
17.8 --- La Salle (AO)
18.3 --- Valgrisenche (AO)
22.5 --- Avise (AO)
24.1 --- Rhemes-Saint-Georges (AO)
24.5 --- Arvier (AO)
24.5 --- Saint-Nicolas (AO)
25.4 --- Rhemes-Notre-Dame (AO)
26.1 --- Introd (AO)
27.7 --- Villeneuve (AO)
28.8 --- Saint-Rhemy-En-Bosses (AO)
29.4 --- Saint-Pierre (AO)
30.4 --- Valsavarenche (AO)
30.5 --- Aymavilles (AO)
31.2 --- Saint-Oyen (AO)
31.7 --- Sarre (AO)
32.2 --- Etroubles (AO)

Quality location estimate:
Erh: 2.2 km, Erz: 2.7 km, Nf: 9, Gap: 153°, Rms: 0.143 s
Stazioni validate: 4


RsniPicker2 - Automatic location results
Station Net P arrival times P pick
err		 P pick
weight		 P res Nll
weight		 S arrival time S pick
err		 S pick
weight		 S res Nll
weight		 Dist.
RSLFR2025-09-07 04:08:47.7400.0080-1.090.07--:---.-----.---.-- 18.8
MRGEIV2025-09-07 04:08:49.1890.0110-0.011.682025-09-07 04:08:52.1600.05710.051.3818.9
REMYGU2025-09-07 04:08:51.0000.01600.001.652025-09-07 04:08:55.0110.2672-0.190.6128.7
LSDGU2025-09-07 04:08:51.5490.01900.021.592025-09-07 04:08:55.9390.1062-0.081.0035.3
RRLGU--:---.-----.---.--2025-09-07 04:09:09.5300.3732-1.380.0887.2
BHBGU2025-09-07 04:09:02.4700.05210.070.95--:---.-----.---.-- 101.8


RsniPicker2 - Automatic magnitude (ML) calculation results
Station Net Stat. Mag. Wood-And.
Ampl.		 Dist. (km) Azimuth Used
MRGE IV0.103.09e-218.965SI
REMY GU0.101.79e-228.757SI
LSD GU0.503.11e-235.3141SI
RRL GU0.907.12e-387.2183SI
BHB GU0.805.59e-3101.8161SI


Results of PGA, PGV, IH, spectral amplitudes (SA) values calculation
Station Net Channel PGA
(g)		 PGV
(m/s)		 PGD
(m)		 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.
(°)
MRGE IVHHZ9.3935e-68.2138e-70.0000e+03.3132e-76.5273e-79.7097e-74.1827e-66.5590e-75.7140e-81.4383e-818.965
MRGE IVHHN1.0731e-59.2577e-70.0000e+03.8953e-77.9264e-77.9264e-78.1328e-67.9272e-77.9857e-81.8551e-818.965
MRGE IVHHE9.1046e-61.0345e-60.0000e+04.0035e-78.1599e-71.2282e-67.6745e-68.0518e-77.4213e-81.5193e-818.965
REMY GUHHZ1.6583e-62.5415e-70.0000e+01.3454e-72.4782e-73.6987e-72.4055e-64.2422e-74.0613e-84.3110e-928.757
REMY GUHHN1.2532e-61.7733e-70.0000e+01.3771e-72.6011e-72.6011e-72.4596e-65.1712e-71.2716e-77.7457e-928.757
REMY GUHHE1.6945e-62.5592e-70.0000e+01.5011e-72.6071e-73.6636e-73.9046e-63.9554e-74.6895e-81.3545e-828.757
LSD GUHHZ4.0371e-64.1827e-70.0000e+01.7178e-73.2661e-74.6449e-76.3725e-67.2258e-74.2955e-87.6702e-935.3141
LSD GUHHN6.4566e-67.3766e-70.0000e+03.0998e-75.6376e-75.6376e-71.0127e-59.3126e-75.2938e-81.0138e-835.3141
LSD GUHHE5.5033e-66.1524e-70.0000e+02.8554e-75.1857e-77.4742e-75.9563e-69.8881e-74.8983e-89.4160e-935.3141
RRL GUHHZ1.0677e-72.5136e-80.0000e+01.2471e-83.4439e-85.5941e-82.3424e-75.3912e-82.8405e-84.6616e-987.2183
RRL GUHHN1.4093e-73.7785e-80.0000e+02.8845e-85.7791e-85.7791e-84.6014e-71.4383e-74.2098e-87.0183e-987.2183
RRL GUHHE1.1643e-72.9276e-80.0000e+02.3095e-85.1636e-88.3532e-82.9713e-71.3702e-74.3119e-86.8350e-987.2183
BHB GUHHZ3.7561e-76.9336e-80.0000e+03.6824e-81.0664e-71.7696e-71.4093e-61.1437e-71.5450e-76.4753e-9101.8161
BHB GUHHN2.4923e-75.7698e-80.0000e+04.0308e-88.0416e-88.0416e-88.0461e-71.3344e-76.1468e-83.5769e-9101.8161
BHB GUHHE2.4655e-74.1474e-80.0000e+02.9835e-86.2033e-81.0500e-75.6773e-79.2955e-85.1756e-83.9243e-9101.8161
*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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