MANUAL Location - Area: Alpi Pennine , magnitude (ML): 0.3
2025-10-18 12:35:04 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-10-18 14:12:52

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Earthquake info - Manual location
Event - ID :251018123439
Magnitude (ML) :0.3 +/- 0.2
Origin Time :2025-10-18 12:35:04.213 (UTC)
Location : Latitude: 45.914 N, Longitude: 7.025 E
Area :Alpi Pennine
Depth (km) :5.26
Distances (km) : 14.0 --- Courmayeur
15.7 --- Saint-Rhemy-En-Bosses
16.9 --- Pre -Saint-Didier
17.4 --- Morgex
17.5 --- Saint-Oyen
18.9 --- Etroubles
18.9 --- La Salle
22.4 --- Allein
22.6 --- La Thuile
23.1 --- Ollomont
24.2 --- Doues
24.4 --- Avise
24.5 --- Saint-Nicolas
25.3 --- Valpelline
25.6 --- Gignod
25.8 --- Arvier
26.5 --- Roisan
27.4 --- Villeneuve
27.6 --- Saint-Pierre
27.8 --- Introd

Quality location estimate: Erh: 1.1 km, Erz: 1.2 km, Nf: 16, Gap: 152 °, Rms: 0.28


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 12:35:06.8300.0070-0.471.022025-10-18 12:35:09.1300.1865-0.251.1513.6
REMYGU2025-10-18 12:35:08.1500.01100.400.002025-10-18 12:35:10.0690.1002-0.041.4015.3
MRGEIV2025-10-18 12:35:08.1300.01100.081.152025-10-18 12:35:10.1600.0380-0.461.0517.7
DIXCH2025-10-18 12:35:11.5650.0200-0.051.462025-10-18 12:35:16.3750.1113-0.261.1235.5
RSLFR2025-10-18 12:35:12.0180.0200-0.011.522025-10-18 12:35:16.3400.1404-0.970.2040.2
LSDGU2025-10-18 12:35:13.7360.02000.011.442025-10-18 12:35:19.4800.2156-0.740.5351.8
SENINCH2025-10-18 12:35:14.8580.02000.011.392025-10-18 12:35:21.8400.0400-0.391.0254.7
SATIGU2025-10-18 12:35:16.0480.0200-0.300.992025-10-18 12:35:24.4820.0400-0.690.5565.9


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
BLANCGUHH0.381.26e-113.6222
REMY GUHH0.196.62e-215.3130
MRGE IVHH0.539.46e-217.7170
DIX CHHH0.603.63e-235.558
LSD GUHH0.176.32e-351.8170
SENINCHHH0.287.29e-354.723
SATI GUHH0.272.77e-365.993


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.
(°)
BLANCGUHHZ3.3095e-52.5479e-65.6158e-71.8425e-79.3933e-82.5406e-51.7806e-61.6713e-73.7074e-813.6222
BLANCGUHHN6.1455e-54.3499e-68.3174e-72.7079e-71.5456e-72.8358e-53.4515e-62.5846e-74.9707e-813.6222
BLANCGUHHE7.4946e-55.2221e-69.0000e-73.0799e-71.8715e-74.2108e-52.7478e-63.0631e-75.8457e-813.6222
REMY GUHHZ3.5503e-65.3161e-72.4571e-76.1785e-83.4231e-85.4799e-61.0472e-66.0953e-81.2765e-815.3130
REMY GUHHN5.7953e-68.1837e-73.2858e-71.4497e-76.5301e-89.9913e-61.9122e-69.3691e-81.6901e-815.3130
REMY GUHHE7.0752e-68.6481e-74.4828e-71.4276e-78.6664e-81.3620e-51.9171e-61.4307e-72.5989e-815.3130
MRGE IVHHZ1.3737e-51.4524e-62.7289e-79.4504e-85.2232e-89.5183e-61.5117e-61.1133e-72.7623e-817.7170
MRGE IVHHN3.2196e-53.3912e-65.3339e-71.7754e-79.0635e-83.2524e-51.8575e-62.2649e-76.5649e-817.7170
MRGE IVHHE2.6822e-52.6933e-64.6042e-71.5810e-77.8247e-81.5646e-52.0562e-61.6602e-75.2692e-817.7170
DIX CHHHZ3.9296e-64.0754e-72.5150e-71.0283e-74.8993e-85.5466e-61.0288e-66.4663e-81.0897e-835.558
DIX CHHHN5.6709e-65.7747e-73.3732e-78.7543e-84.1794e-81.0782e-51.4969e-65.9148e-81.2925e-835.558
DIX CHHHE6.0135e-67.3292e-73.0948e-71.1985e-75.9800e-81.2847e-51.3631e-61.0359e-71.5999e-835.558
LSD GUHHZ8.2682e-77.5777e-82.3058e-81.2870e-85.9274e-97.8865e-78.4561e-87.7466e-91.7312e-951.8170
LSD GUHHN1.3139e-61.3626e-72.4079e-88.1291e-95.0193e-91.2946e-61.0274e-71.2516e-82.3493e-951.8170
LSD GUHHE2.0914e-61.4371e-75.4318e-81.6826e-88.6545e-91.7015e-62.5938e-71.1743e-83.0302e-951.8170
SENINCHHHZ9.9535e-71.9031e-71.1927e-76.1266e-85.0126e-82.8460e-65.4660e-76.6340e-81.2798e-854.723
SENINCHHHN8.2495e-71.1581e-76.5715e-84.4573e-83.5882e-82.2918e-63.2529e-75.5086e-81.5415e-854.723
SENINCHHHE1.1219e-61.1473e-76.4291e-82.7882e-81.3571e-81.4896e-62.8654e-72.2019e-82.7027e-954.723
SATI GUHHZ2.4281e-72.1983e-81.2721e-85.4666e-93.3050e-95.6463e-75.3993e-84.1305e-96.1643e-1065.993
SATI GUHHN5.1549e-76.7984e-81.9929e-87.9276e-96.4144e-91.1919e-65.6725e-89.2220e-91.4524e-965.993
SATI GUHHE3.5947e-74.1605e-82.3078e-89.9380e-99.0224e-91.3425e-65.7571e-81.0159e-81.2653e-965.993
*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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