MANUAL Location - Area: Alpi Pennine , magnitude (ML): 0.4
2025-10-18 12:22:53 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-10-18 14:08:19

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Earthquake info - Manual location
Event - ID :251018122207
Magnitude (ML) :0.4 +/- 0.1
Origin Time :2025-10-18 12:22:53.066 (UTC)
Location : Latitude: 45.897 N, Longitude: 7.009 E
Area :Alpi Pennine
Depth (km) :6.80
Distances (km) : 11.8 --- Courmayeur
14.8 --- Pre -Saint-Didier
15.5 --- Saint-Rhemy-En-Bosses
15.6 --- Morgex
17.4 --- La Salle
17.6 --- Saint-Oyen
19.0 --- Etroubles
20.4 --- La Thuile
22.5 --- Allein
23.1 --- Avise
23.4 --- Saint-Nicolas
23.8 --- Ollomont
24.6 --- Doues
24.7 --- Arvier
25.6 --- Gignod
25.7 --- Valpelline
26.5 --- Villeneuve
26.6 --- Roisan
26.7 --- Introd
26.8 --- Saint-Pierre

Quality location estimate: Erh: 0.7 km, Erz: 0.5 km, Nf: 16, Gap: 152 °, Rms: 0.37


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.
BLANCGU2025-10-18 12:22:56.5900.00800.541.312025-10-18 12:22:58.0270.0942-0.021.3813.1
REMYGU2025-10-18 12:22:57.2700.01500.541.302025-10-18 12:22:59.2000.0340-0.011.5616.1
MRGEIV2025-10-18 12:22:57.2700.01000.531.312025-10-18 12:22:59.2600.03800.051.4217.0
DIXCH2025-10-18 12:23:00.6980.0200-0.051.402025-10-18 12:23:05.5190.1123-0.530.1637.8
RSLFR2025-10-18 12:23:00.8600.02000.400.522025-10-18 12:23:05.4400.1133-0.051.1138.3
LSDGU2025-10-18 12:23:02.8160.02000.560.982025-10-18 12:23:08.4080.0400-0.130.9450.4
CIROGU2025-10-18 12:23:03.5510.02000.011.392025-10-18 12:23:09.4900.0400-1.380.0155.2
SENINCH2025-10-18 12:23:04.1060.02000.091.122025-10-18 12:23:10.9090.0400-0.750.1057.1


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
BLANCGUHH0.331.21e-113.1225
REMY GUHH0.196.13e-216.1120
MRGE IVHH0.561.11e-117.0164
DIX CHHH0.643.52e-237.856
LSD GUHH0.349.92e-350.4169
CIRO GUHH0.455.63e-355.2127
SENINCHHH0.459.85e-357.123


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.
(°)
BLANCGUHHZ1.0367e-51.3154e-65.6511e-71.8031e-79.2590e-82.0935e-52.0762e-61.6593e-73.3612e-813.1225
BLANCGUHHN1.2630e-51.8707e-67.7962e-72.6392e-71.4207e-72.3541e-53.6067e-62.3330e-74.7092e-813.1225
BLANCGUHHE1.2761e-51.8953e-68.8406e-73.0516e-71.7440e-74.6817e-52.5659e-62.9242e-75.0395e-813.1225
REMY GUHHZ5.1039e-64.8523e-72.3903e-75.9572e-83.0520e-85.6212e-61.0056e-65.4046e-81.0150e-816.1120
REMY GUHHN5.9644e-68.5072e-73.1240e-71.6639e-79.4955e-89.0314e-61.7019e-61.4907e-72.0091e-816.1120
REMY GUHHE6.4599e-67.4763e-74.1927e-71.4223e-79.0393e-81.1416e-51.8181e-61.4256e-72.3178e-816.1120
MRGE IVHHZ1.9324e-51.9907e-63.0264e-71.0597e-76.1577e-81.2665e-51.6081e-61.3784e-73.0682e-817.0164
MRGE IVHHN3.9683e-53.8430e-65.9469e-72.0068e-71.0601e-73.6814e-52.1563e-62.6349e-78.0676e-817.0164
MRGE IVHHE3.7134e-53.5213e-65.9774e-72.0660e-71.0584e-71.9158e-52.8865e-62.2692e-76.5839e-817.0164
DIX CHHHZ4.0391e-64.1830e-72.8004e-79.2974e-84.5431e-87.7695e-61.0731e-67.2335e-81.1935e-837.856
DIX CHHHN4.4770e-65.9404e-73.3893e-79.8968e-84.6589e-81.2231e-51.4868e-67.5393e-81.2540e-837.856
DIX CHHHE6.1547e-67.2958e-73.1499e-71.1929e-75.2027e-81.2504e-51.4451e-68.1431e-81.6422e-837.856
LSD GUHHZ1.0165e-61.1470e-73.3818e-81.5798e-87.1437e-91.2488e-61.2033e-71.1005e-82.6277e-950.4169
LSD GUHHN1.9104e-61.7348e-73.3994e-81.1042e-85.5060e-91.7596e-61.6108e-71.2340e-83.4635e-950.4169
LSD GUHHE2.4317e-62.0683e-77.5300e-82.4494e-81.1749e-82.1158e-63.5694e-71.8882e-83.5550e-950.4169
CIRO GUHHZ8.0687e-79.9713e-83.1880e-81.2208e-87.3308e-91.3624e-61.5341e-71.2158e-81.9035e-955.2127
CIRO GUHHN1.1810e-61.1197e-74.4379e-81.6651e-88.2932e-98.7345e-71.7623e-71.3862e-81.8973e-955.2127
CIRO GUHHE8.2910e-78.2455e-82.5681e-81.0882e-85.4645e-91.2756e-61.3490e-78.4754e-91.6685e-955.2127
SENINCHHHZ6.5568e-71.3344e-78.8879e-83.0279e-81.5674e-82.2260e-64.4443e-72.5310e-84.2220e-957.123
SENINCHHHN6.2498e-78.8527e-85.4482e-83.0962e-81.5643e-81.8857e-62.8865e-72.7645e-81.9933e-957.123
SENINCHHHE8.0316e-79.9294e-85.8204e-84.1007e-85.5060e-81.1306e-62.1839e-78.6980e-81.1065e-857.123
*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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