AUTOMATIC Location - Area: Alpi Pennine , magnitude (ML): 1.8
2025-04-27 17:05:18 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-04-27 17:09:16

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Earthquake info - RsniPicker2 automatic location
Event - ID :250427170412
Magnitude (ML) :1.8 +/- 0.2
Origin Time :2025-04-27 17:05:18.559 (UTC)
Location : Latitude: 45.874 N, Longitude: 7.025 E
Area :Alpi Pennine
Depth (km) :6.02
Distances (km) : 9.8 --- Courmayeur (AO)
12.5 --- Pre -Saint-Didier (AO)
12.8 --- Morgex (AO)
13.2 --- Saint-Rhemy-En-Bosses (AO)
14.5 --- La Salle (AO)
15.4 --- Saint-Oyen (AO)
16.8 --- Etroubles (AO)
18.3 --- La Thuile (AO)
20.3 --- Avise (AO)
20.4 --- Allein (AO)
20.5 --- Saint-Nicolas (AO)
21.8 --- Arvier (AO)
22.2 --- Ollomont (AO)
22.7 --- Doues (AO)
23.3 --- Gignod (AO)
23.7 --- Villeneuve (AO)
23.8 --- Introd (AO)
23.9 --- Valpelline (AO)
24.1 --- Saint-Pierre (AO)
24.4 --- Roisan (AO)

Quality location estimate:
Erh: 1.1 km, Erz: 0.8 km, Nf: 39, Gap: 136°, Rms: 0.312 s
Stazioni validate: 22


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.
COURMFR2025-04-27 17:05:20.9800.00600.001.412025-04-27 17:05:22.1600.0290-0.381.359.7
BLANCGU2025-04-27 17:05:21.0900.0050-0.281.342025-04-27 17:05:22.6100.3782-0.630.809.8
MRGEIV2025-04-27 17:05:21.8890.00800.190.702025-04-27 17:05:23.7800.04000.001.4013.3
DIXCH2025-04-27 17:05:26.2750.03000.001.362025-04-27 17:05:31.1200.1142-0.481.0538.0
LSDGU2025-04-27 17:05:27.3300.03000.081.232025-04-27 17:05:32.7700.1422-0.421.1347.2
CIROGU2025-04-27 17:05:28.3090.0280-0.311.362025-04-27 17:05:34.5290.1572-1.100.2652.2
VANNICH2025-04-27 17:05:29.3250.0300-0.011.322025-04-27 17:05:36.4190.1752-0.351.1758.2
SENINCH2025-04-27 17:05:29.4000.0290-0.391.282025-04-27 17:05:36.7400.1762-0.900.4458.7
SATIGU2025-04-27 17:05:30.0900.0340-0.431.202025-04-27 17:05:38.3380.4032-0.980.4765.6
EMBDCH2025-04-27 17:05:31.9050.04000.081.162025-04-27 17:05:40.3250.2372-0.720.6973.3
MMKCH2025-04-27 17:05:31.6900.0390-0.281.332025-04-27 17:05:41.5140.22620.080.9775.4
OGMOFR2025-04-27 17:05:32.1690.0400-0.321.312025-04-27 17:05:41.2360.3312-0.750.6778.9
OROIV2025-04-27 17:05:32.7700.04100.041.212025-04-27 17:05:42.1500.2382-0.620.8279.3
LAUCHCH2025-04-27 17:05:33.6340.04200.031.212025-04-27 17:05:44.3340.25120.250.7383.5
SIMPLCH2025-04-27 17:05:34.0350.0450-0.211.332025-04-27 17:05:44.3820.2982-0.810.6187.1
RRLGU2025-04-27 17:05:37.0090.0541-0.491.032025-04-27 17:05:49.2900.5253-1.220.35107.7
BHBGU2025-04-27 17:05:38.6500.67930.200.632025-04-27 17:05:52.2900.35120.060.84117.1
OGAGFR2025-04-27 17:05:40.5290.0641-0.191.27--:---.-----.---.-- 126.9
VAREIV2025-04-27 17:05:42.0200.07410.031.11--:---.-----.---.-- 135.2
PZZGU2025-04-27 17:05:44.5900.10120.410.45--:---.-----.---.-- 152.3
SURFFR2025-04-27 17:05:45.0490.0791-0.451.04--:---.-----.---.-- 155.9
MUGIOCH2025-04-27 17:05:45.2990.08010.100.98--:---.-----.---.-- 156.2


RsniPicker2 - Automatic magnitude (ML) calculation results
Station Net Stat. Mag. Wood-And.
Ampl.		 Dist. (km) Azimuth Used
COURMFR2.101.12e+19.7219SI
MRGE IV1.903.81e+013.3166SI
DIX CH2.301.50e+038.052SI
LSD GU1.903.81e-147.2170SI
CIRO GU1.901.76e-152.2125SI
SATI GU1.605.34e-265.690SI
MMK CH1.604.34e-275.474SI
ORO IV1.901.32e-179.3110SI
RRL GU1.501.97e-2107.7190SI
BHB GU1.804.12e-2117.1171SI
VARE IV1.602.10e-2135.290SI
PZZ GU1.803.78e-2152.3177SI


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.
(°)
BLANCGUHHZ2.4028e-42.9483e-50.0000e+09.4142e-61.8089e-52.6576e-51.8747e-43.4328e-51.9942e-63.7098e-79.8-1
BLANCGUHHN3.6896e-43.8379e-50.0000e+01.8179e-53.2654e-53.2654e-55.1546e-45.0467e-53.1054e-66.3332e-79.8-1
BLANCGUHHE2.5779e-42.7333e-50.0000e+01.5621e-52.7680e-53.8690e-52.2208e-48.2258e-53.3067e-65.4873e-79.8-1
MRGE IVHHZ3.6153e-42.8130e-50.0000e+06.8035e-61.4261e-52.1496e-51.0937e-41.6795e-51.1640e-62.9076e-713.3166
MRGE IVHHN6.9576e-47.8005e-50.0000e+01.9522e-53.9478e-53.9478e-54.0493e-42.8112e-52.7017e-69.1409e-713.3166
MRGE IVHHE8.4644e-47.4913e-50.0000e+01.8975e-53.9014e-55.8985e-54.1162e-43.2884e-53.4289e-68.7638e-713.3166
DIX CHHHZ1.1359e-41.6962e-50.0000e+08.0285e-61.4324e-52.0300e-52.2502e-42.3271e-51.3261e-62.7201e-738.052
DIX CHHHN1.2490e-41.4911e-50.0000e+08.8733e-61.5232e-51.5232e-52.3152e-43.6401e-51.4995e-62.7415e-738.052
DIX CHHHE1.3489e-42.0908e-50.0000e+09.2512e-61.6884e-52.3276e-53.3794e-42.5653e-51.7104e-63.1908e-738.052
LSD GUHHZ2.3872e-52.7858e-60.0000e+01.4647e-62.6604e-63.8829e-64.0323e-52.8068e-62.8679e-75.8088e-847.2170
LSD GUHHN3.2949e-53.1527e-60.0000e+01.4102e-62.6682e-62.6682e-63.6873e-53.7927e-62.6063e-76.1224e-847.2170
LSD GUHHE4.8433e-55.7256e-60.0000e+01.7527e-63.4162e-65.0117e-65.5396e-54.2995e-63.3178e-76.9366e-847.2170
CIRO GUHHZ1.6580e-51.9496e-60.0000e+01.0471e-62.1292e-63.1016e-61.7936e-52.8244e-62.1417e-73.7825e-852.2125
CIRO GUHHN2.4334e-53.1210e-60.0000e+01.1748e-62.2089e-62.2089e-62.0387e-54.3778e-62.3141e-74.1682e-852.2125
CIRO GUHHE1.5643e-51.8599e-60.0000e+01.1005e-62.0227e-62.8247e-62.5206e-54.1773e-62.2201e-73.3474e-852.2125
SATI GUHHZ5.0584e-66.4360e-70.0000e+03.9032e-76.8254e-79.7609e-71.5220e-51.0017e-68.6050e-81.3068e-865.690
SATI GUHHN9.0452e-61.2217e-60.0000e+06.4953e-71.2382e-61.2382e-62.3856e-51.4379e-61.0609e-72.3773e-865.690
SATI GUHHE1.0383e-51.2496e-60.0000e+07.1357e-71.2722e-61.8219e-62.1698e-51.3996e-61.0777e-72.5093e-865.690
MMK CHHHZ3.8030e-64.4419e-70.0000e+04.1463e-76.8934e-79.2996e-77.8320e-62.3143e-69.7694e-81.2805e-875.474
MMK CHHHN4.0328e-66.8078e-70.0000e+04.9333e-79.1507e-79.1507e-71.1066e-51.3831e-61.0503e-71.5876e-875.474
MMK CHHHE3.4694e-64.4229e-70.0000e+02.8212e-74.8689e-76.9904e-75.7449e-69.3433e-75.7901e-81.1021e-875.474
RRL GUHHZ4.7441e-71.1533e-70.0000e+09.3400e-81.9325e-72.6586e-72.2490e-65.6345e-75.9894e-85.4655e-9107.7190
RRL GUHHN6.9373e-71.9420e-70.0000e+01.7021e-73.0407e-73.0407e-72.3744e-67.8131e-77.2384e-86.0416e-9107.7190
RRL GUHHE5.7291e-71.6220e-70.0000e+01.5509e-73.0241e-73.9219e-72.1832e-67.5740e-79.5753e-85.9229e-9107.7190
BHB GUHHZ1.6965e-64.2868e-70.0000e+03.2112e-75.6300e-77.6498e-74.7852e-61.0224e-61.9313e-71.4868e-8117.1171
BHB GUHHN2.8459e-66.3286e-70.0000e+05.0424e-78.2256e-78.2256e-78.5089e-61.7612e-61.3312e-71.4289e-8117.1171
BHB GUHHE1.8634e-62.6219e-70.0000e+02.4381e-74.2462e-75.8741e-75.3500e-67.0992e-71.4236e-79.1814e-9117.1171
VARE IVHHZ1.0825e-61.6611e-70.0000e+01.4445e-72.3995e-73.2976e-73.2966e-63.5400e-74.9375e-86.1849e-9135.290
VARE IVHHN1.2584e-62.2622e-70.0000e+01.8667e-73.2938e-73.2938e-73.5965e-65.5519e-75.0218e-86.3788e-9135.290
VARE IVHHE7.7510e-71.7255e-70.0000e+01.4964e-72.6761e-73.5157e-72.0784e-64.3306e-75.9498e-86.7822e-9135.290
PZZ GUHHZ1.5089e-64.0867e-70.0000e+02.9353e-74.8937e-76.6879e-75.0753e-61.1626e-67.8081e-89.9960e-9152.3177
PZZ GUHHN1.0886e-62.5207e-70.0000e+02.0779e-73.5367e-73.5367e-72.5963e-69.3513e-79.3504e-89.6197e-9152.3177
PZZ GUHHE1.4937e-63.8622e-70.0000e+03.1661e-75.1973e-77.1447e-74.9738e-61.4937e-68.8737e-89.1731e-9152.3177
*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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